1 /* gfortran header file
2 Copyright (C) 2000-2013 Free Software Foundation, Inc.
3 Contributed by Andy Vaught
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 #ifndef GCC_GFORTRAN_H
22 #define GCC_GFORTRAN_H
24 /* It's probably insane to have this large of a header file, but it
25 seemed like everything had to be recompiled anyway when a change
26 was made to a header file, and there were ordering issues with
27 multiple header files. Besides, Microsoft's winnt.h was 250k last
28 time I looked, so by comparison this is perfectly reasonable. */
30 #ifndef GCC_CORETYPES_H
31 #error "gfortran.h must be included after coretypes.h"
34 /* Declarations common to the front-end and library are put in
35 libgfortran/libgfortran_frontend.h */
36 #include "libgfortran.h"
41 #include "splay-tree.h"
44 /* Major control parameters. */
46 #define GFC_MAX_SYMBOL_LEN 63 /* Must be at least 63 for F2003. */
47 #define GFC_LETTERS 26 /* Number of letters in the alphabet. */
49 #define MAX_SUBRECORD_LENGTH 2147483639 /* 2**31-9 */
52 #define gfc_is_whitespace(c) ((c==' ') || (c=='\t'))
55 #define stringize(x) expand_macro(x)
56 #define expand_macro(x) # x
58 /* For the runtime library, a standard prefix is a requirement to
59 avoid cluttering the namespace with things nobody asked for. It's
60 ugly to look at and a pain to type when you add the prefix by hand,
61 so we hide it behind a macro. */
62 #define PREFIX(x) "_gfortran_" x
65 /* A prefix for internal variables, which are not user-visible. */
66 #if !defined (NO_DOT_IN_LABEL)
67 # define GFC_PREFIX(x) "_F." x
68 #elif !defined (NO_DOLLAR_IN_LABEL)
69 # define GFC_PREFIX(x) "_F$" x
71 # define GFC_PREFIX(x) "_F_" x
74 #define BLANK_COMMON_NAME "__BLNK__"
76 /* Macro to initialize an mstring structure. */
77 #define minit(s, t) { s, NULL, t }
79 /* Structure for storing strings to be matched by gfc_match_string. */
90 /*************************** Enums *****************************/
92 /* Used when matching and resolving data I/O transfer statements. */
95 { M_READ, M_WRITE, M_PRINT, M_INQUIRE }
98 /* The author remains confused to this day about the convention of
99 returning '0' for 'SUCCESS'... or was it the other way around? The
100 following enum makes things much more readable. We also start
101 values off at one instead of zero. */
104 { SUCCESS = 1, FAILURE }
107 /* These are flags for identifying whether we are reading a character literal
108 between quotes or normal source code. */
111 { NONSTRING = 0, INSTRING_WARN, INSTRING_NOWARN }
114 /* This is returned by gfc_notification_std to know if, given the flags
115 that were given (-std=, -pedantic) we should issue an error, a warning
119 { SILENT, WARNING, ERROR }
122 /* Matchers return one of these three values. The difference between
123 MATCH_NO and MATCH_ERROR is that MATCH_ERROR means that a match was
124 successful, but that something non-syntactic is wrong and an error
125 has already been issued. */
128 { MATCH_NO = 1, MATCH_YES, MATCH_ERROR }
131 /* Used for different Fortran source forms in places like scanner.c. */
133 { FORM_FREE, FORM_FIXED, FORM_UNKNOWN }
136 /* Expression node types. */
138 { EXPR_OP = 1, EXPR_FUNCTION, EXPR_CONSTANT, EXPR_VARIABLE,
139 EXPR_SUBSTRING, EXPR_STRUCTURE, EXPR_ARRAY, EXPR_NULL, EXPR_COMPCALL, EXPR_PPC
145 { AS_EXPLICIT = 1, AS_ASSUMED_SHAPE, AS_DEFERRED,
146 AS_ASSUMED_SIZE, AS_IMPLIED_SHAPE, AS_ASSUMED_RANK,
152 { AR_FULL = 1, AR_ELEMENT, AR_SECTION, AR_UNKNOWN }
155 /* Statement label types. ST_LABEL_DO_TARGET is used for obsolescent warnings
156 related to shared DO terminations and DO targets which are neither END DO
157 nor CONTINUE; otherwise it is identical to ST_LABEL_TARGET. */
159 { ST_LABEL_UNKNOWN = 1, ST_LABEL_TARGET, ST_LABEL_DO_TARGET,
160 ST_LABEL_BAD_TARGET, ST_LABEL_FORMAT
164 /* Intrinsic operators. */
166 { GFC_INTRINSIC_BEGIN = 0,
167 INTRINSIC_NONE = -1, INTRINSIC_UPLUS = GFC_INTRINSIC_BEGIN,
168 INTRINSIC_UMINUS, INTRINSIC_PLUS, INTRINSIC_MINUS, INTRINSIC_TIMES,
169 INTRINSIC_DIVIDE, INTRINSIC_POWER, INTRINSIC_CONCAT,
170 INTRINSIC_AND, INTRINSIC_OR, INTRINSIC_EQV, INTRINSIC_NEQV,
171 /* ==, /=, >, >=, <, <= */
172 INTRINSIC_EQ, INTRINSIC_NE, INTRINSIC_GT, INTRINSIC_GE,
173 INTRINSIC_LT, INTRINSIC_LE,
174 /* .EQ., .NE., .GT., .GE., .LT., .LE. (OS = Old-Style) */
175 INTRINSIC_EQ_OS, INTRINSIC_NE_OS, INTRINSIC_GT_OS, INTRINSIC_GE_OS,
176 INTRINSIC_LT_OS, INTRINSIC_LE_OS,
177 INTRINSIC_NOT, INTRINSIC_USER, INTRINSIC_ASSIGN,
178 INTRINSIC_PARENTHESES, GFC_INTRINSIC_END /* Sentinel */
182 /* This macro is the number of intrinsic operators that exist.
183 Assumptions are made about the numbering of the interface_op enums. */
184 #define GFC_INTRINSIC_OPS GFC_INTRINSIC_END
186 /* Arithmetic results. */
188 { ARITH_OK = 1, ARITH_OVERFLOW, ARITH_UNDERFLOW, ARITH_NAN,
189 ARITH_DIV0, ARITH_INCOMMENSURATE, ARITH_ASYMMETRIC, ARITH_PROHIBIT
196 ST_ARITHMETIC_IF, ST_ALLOCATE, ST_ATTR_DECL, ST_ASSOCIATE,
197 ST_BACKSPACE, ST_BLOCK, ST_BLOCK_DATA,
198 ST_CALL, ST_CASE, ST_CLOSE, ST_COMMON, ST_CONTINUE, ST_CONTAINS, ST_CYCLE,
199 ST_DATA, ST_DATA_DECL, ST_DEALLOCATE, ST_DO, ST_ELSE, ST_ELSEIF,
200 ST_ELSEWHERE, ST_END_ASSOCIATE, ST_END_BLOCK, ST_END_BLOCK_DATA,
201 ST_ENDDO, ST_IMPLIED_ENDDO,
202 ST_END_FILE, ST_FINAL, ST_FLUSH, ST_END_FORALL, ST_END_FUNCTION, ST_ENDIF,
203 ST_END_INTERFACE, ST_END_MODULE, ST_END_PROGRAM, ST_END_SELECT,
204 ST_END_SUBROUTINE, ST_END_WHERE, ST_END_TYPE, ST_ENTRY, ST_EQUIVALENCE,
205 ST_ERROR_STOP, ST_EXIT, ST_FORALL, ST_FORALL_BLOCK, ST_FORMAT, ST_FUNCTION,
206 ST_GOTO, ST_IF_BLOCK, ST_IMPLICIT, ST_IMPLICIT_NONE, ST_IMPORT,
207 ST_INQUIRE, ST_INTERFACE, ST_SYNC_ALL, ST_SYNC_MEMORY, ST_SYNC_IMAGES,
208 ST_PARAMETER, ST_MODULE, ST_MODULE_PROC, ST_NAMELIST, ST_NULLIFY, ST_OPEN,
209 ST_PAUSE, ST_PRIVATE, ST_PROGRAM, ST_PUBLIC, ST_READ, ST_RETURN, ST_REWIND,
210 ST_STOP, ST_SUBROUTINE, ST_TYPE, ST_USE, ST_WHERE_BLOCK, ST_WHERE, ST_WAIT,
211 ST_WRITE, ST_ASSIGNMENT, ST_POINTER_ASSIGNMENT, ST_SELECT_CASE, ST_SEQUENCE,
212 ST_SIMPLE_IF, ST_STATEMENT_FUNCTION, ST_DERIVED_DECL, ST_LABEL_ASSIGNMENT,
213 ST_ENUM, ST_ENUMERATOR, ST_END_ENUM, ST_SELECT_TYPE, ST_TYPE_IS, ST_CLASS_IS,
214 ST_OMP_ATOMIC, ST_OMP_BARRIER, ST_OMP_CRITICAL, ST_OMP_END_ATOMIC,
215 ST_OMP_END_CRITICAL, ST_OMP_END_DO, ST_OMP_END_MASTER, ST_OMP_END_ORDERED,
216 ST_OMP_END_PARALLEL, ST_OMP_END_PARALLEL_DO, ST_OMP_END_PARALLEL_SECTIONS,
217 ST_OMP_END_PARALLEL_WORKSHARE, ST_OMP_END_SECTIONS, ST_OMP_END_SINGLE,
218 ST_OMP_END_WORKSHARE, ST_OMP_DO, ST_OMP_FLUSH, ST_OMP_MASTER, ST_OMP_ORDERED,
219 ST_OMP_PARALLEL, ST_OMP_PARALLEL_DO, ST_OMP_PARALLEL_SECTIONS,
220 ST_OMP_PARALLEL_WORKSHARE, ST_OMP_SECTIONS, ST_OMP_SECTION, ST_OMP_SINGLE,
221 ST_OMP_THREADPRIVATE, ST_OMP_WORKSHARE, ST_OMP_TASK, ST_OMP_END_TASK,
222 ST_OMP_TASKWAIT, ST_OMP_TASKYIELD, ST_PROCEDURE, ST_GENERIC, ST_CRITICAL,
223 ST_END_CRITICAL, ST_GET_FCN_CHARACTERISTICS, ST_LOCK, ST_UNLOCK, ST_NONE
227 /* Types of interfaces that we can have. Assignment interfaces are
228 considered to be intrinsic operators. */
231 INTERFACE_NAMELESS = 1, INTERFACE_GENERIC,
232 INTERFACE_INTRINSIC_OP, INTERFACE_USER_OP, INTERFACE_ABSTRACT
236 /* Symbol flavors: these are all mutually exclusive.
237 10 elements = 4 bits. */
238 typedef enum sym_flavor
240 FL_UNKNOWN = 0, FL_PROGRAM, FL_BLOCK_DATA, FL_MODULE, FL_VARIABLE,
241 FL_PARAMETER, FL_LABEL, FL_PROCEDURE, FL_DERIVED, FL_NAMELIST,
246 /* Procedure types. 7 elements = 3 bits. */
247 typedef enum procedure_type
248 { PROC_UNKNOWN, PROC_MODULE, PROC_INTERNAL, PROC_DUMMY,
249 PROC_INTRINSIC, PROC_ST_FUNCTION, PROC_EXTERNAL
254 typedef enum sym_intent
255 { INTENT_UNKNOWN = 0, INTENT_IN, INTENT_OUT, INTENT_INOUT
260 typedef enum gfc_access
261 { ACCESS_UNKNOWN = 0, ACCESS_PUBLIC, ACCESS_PRIVATE
265 /* Flags to keep track of where an interface came from.
266 3 elements = 2 bits. */
268 { IFSRC_UNKNOWN = 0, /* Interface unknown, only return type may be known. */
269 IFSRC_DECL, /* FUNCTION or SUBROUTINE declaration. */
270 IFSRC_IFBODY /* INTERFACE statement or PROCEDURE statement
271 with explicit interface. */
275 /* Whether a SAVE attribute was set explicitly or implicitly. */
276 typedef enum save_state
277 { SAVE_NONE = 0, SAVE_EXPLICIT, SAVE_IMPLICIT
281 /* Strings for all symbol attributes. We use these for dumping the
282 parse tree, in error messages, and also when reading and writing
283 modules. In symbol.c. */
284 extern const mstring flavors[];
285 extern const mstring procedures[];
286 extern const mstring intents[];
287 extern const mstring access_types[];
288 extern const mstring ifsrc_types[];
289 extern const mstring save_status[];
291 /* Enumeration of all the generic intrinsic functions. Used by the
292 backend for identification of a function. */
296 /* GFC_ISYM_NONE is used for intrinsics which will never be seen by
297 the backend (e.g. KIND). */
334 GFC_ISYM_COMMAND_ARGUMENT_COUNT,
335 GFC_ISYM_COMPILER_OPTIONS,
336 GFC_ISYM_COMPILER_VERSION,
347 GFC_ISYM_DATE_AND_TIME,
351 GFC_ISYM_DOT_PRODUCT,
360 GFC_ISYM_ERFC_SCALED,
362 GFC_ISYM_EXECUTE_COMMAND_LINE,
366 GFC_ISYM_EXTENDS_TYPE_OF,
383 GFC_ISYM_GET_COMMAND,
384 GFC_ISYM_GET_COMMAND_ARGUMENT,
387 GFC_ISYM_GET_ENVIRONMENT_VARIABLE,
408 GFC_ISYM_IMAGE_INDEX,
417 GFC_ISYM_IS_IOSTAT_END,
418 GFC_ISYM_IS_IOSTAT_EOR,
453 GFC_ISYM_MAXEXPONENT,
461 GFC_ISYM_MINEXPONENT,
486 GFC_ISYM_RANDOM_NUMBER,
487 GFC_ISYM_RANDOM_SEED,
496 GFC_ISYM_SAME_TYPE_AS,
502 GFC_ISYM_SET_EXPONENT,
522 GFC_ISYM_STORAGE_SIZE,
528 GFC_ISYM_SYSTEM_CLOCK,
552 typedef enum gfc_isym_id gfc_isym_id;
557 GFC_INIT_REAL_OFF = 0,
562 GFC_INIT_REAL_NEG_INF
568 GFC_INIT_LOGICAL_OFF = 0,
569 GFC_INIT_LOGICAL_FALSE,
570 GFC_INIT_LOGICAL_TRUE
576 GFC_INIT_CHARACTER_OFF = 0,
577 GFC_INIT_CHARACTER_ON
579 init_local_character;
583 GFC_INIT_INTEGER_OFF = 0,
590 GFC_FCOARRAY_NONE = 0,
605 /************************* Structures *****************************/
607 /* Used for keeping things in balanced binary trees. */
608 #define BBT_HEADER(self) int priority; struct self *left, *right
610 #define NAMED_INTCST(a,b,c,d) a,
611 #define NAMED_KINDARRAY(a,b,c,d) a,
612 #define NAMED_FUNCTION(a,b,c,d) a,
613 #define NAMED_DERIVED_TYPE(a,b,c,d) a,
616 ISOFORTRANENV_INVALID = -1,
617 #include "iso-fortran-env.def"
618 ISOFORTRANENV_LAST, ISOFORTRANENV_NUMBER = ISOFORTRANENV_LAST
620 iso_fortran_env_symbol;
622 #undef NAMED_KINDARRAY
623 #undef NAMED_FUNCTION
624 #undef NAMED_DERIVED_TYPE
626 #define NAMED_INTCST(a,b,c,d) a,
627 #define NAMED_REALCST(a,b,c,d) a,
628 #define NAMED_CMPXCST(a,b,c,d) a,
629 #define NAMED_LOGCST(a,b,c) a,
630 #define NAMED_CHARKNDCST(a,b,c) a,
631 #define NAMED_CHARCST(a,b,c) a,
632 #define DERIVED_TYPE(a,b,c) a,
633 #define PROCEDURE(a,b) a,
634 #define NAMED_FUNCTION(a,b,c,d) a,
637 ISOCBINDING_INVALID = -1,
638 #include "iso-c-binding.def"
640 ISOCBINDING_NUMBER = ISOCBINDING_LAST
642 iso_c_binding_symbol;
647 #undef NAMED_CHARKNDCST
651 #undef NAMED_FUNCTION
655 INTMOD_NONE = 0, INTMOD_ISO_FORTRAN_ENV, INTMOD_ISO_C_BINDING
661 char name[GFC_MAX_SYMBOL_LEN + 1];
662 int value; /* Used for both integer and character values. */
667 /* Array of structs, where the structs represent the C interop kinds.
668 The list will be implemented based on a hash of the kind name since
669 these could be accessed multiple times.
670 Declared in trans-types.c as a global, since it's in that file
671 that the list is initialized. */
672 extern CInteropKind_t c_interop_kinds_table[];
675 /* Structure and list of supported extension attributes. */
678 EXT_ATTR_DLLIMPORT = 0,
683 EXT_ATTR_LAST, EXT_ATTR_NUM = EXT_ATTR_LAST
691 const char *middle_end_name;
695 extern const ext_attr_t ext_attr_list[];
697 /* Symbol attribute structure. */
700 /* Variable attributes. */
701 unsigned allocatable:1, dimension:1, codimension:1, external:1, intrinsic:1,
702 optional:1, pointer:1, target:1, value:1, volatile_:1, temporary:1,
703 dummy:1, result:1, assign:1, threadprivate:1, not_always_present:1,
704 implied_index:1, subref_array_pointer:1, proc_pointer:1, asynchronous:1,
707 /* For CLASS containers, the pointer attribute is sometimes set internally
708 even though it was not directly specified. In this case, keep the
709 "real" (original) value here. */
710 unsigned class_pointer:1;
712 ENUM_BITFIELD (save_state) save:2;
714 unsigned data:1, /* Symbol is named in a DATA statement. */
715 is_protected:1, /* Symbol has been marked as protected. */
716 use_assoc:1, /* Symbol has been use-associated. */
717 use_only:1, /* Symbol has been use-associated, with ONLY. */
718 use_rename:1, /* Symbol has been use-associated and renamed. */
719 imported:1, /* Symbol has been associated by IMPORT. */
720 host_assoc:1; /* Symbol has been host associated. */
722 unsigned in_namelist:1, in_common:1, in_equivalence:1;
723 unsigned function:1, subroutine:1, procedure:1;
724 unsigned generic:1, generic_copy:1;
725 unsigned implicit_type:1; /* Type defined via implicit rules. */
726 unsigned untyped:1; /* No implicit type could be found. */
728 unsigned is_bind_c:1; /* say if is bound to C. */
729 unsigned extension:8; /* extension level of a derived type. */
730 unsigned is_class:1; /* is a CLASS container. */
731 unsigned class_ok:1; /* is a CLASS object with correct attributes. */
732 unsigned vtab:1; /* is a derived type vtab, pointed to by CLASS objects. */
733 unsigned vtype:1; /* is a derived type of a vtab. */
735 /* These flags are both in the typespec and attribute. The attribute
736 list is what gets read from/written to a module file. The typespec
737 is created from a decl being processed. */
738 unsigned is_c_interop:1; /* It's c interoperable. */
739 unsigned is_iso_c:1; /* Symbol is from iso_c_binding. */
741 /* Function/subroutine attributes */
742 unsigned sequence:1, elemental:1, pure:1, recursive:1;
743 unsigned unmaskable:1, masked:1, contained:1, mod_proc:1, abstract:1;
745 /* Set if a (public) symbol [e.g. generic name] exposes this symbol,
746 which is relevant for private module procedures. */
747 unsigned public_used:1;
749 /* This is set if a contained procedure could be declared pure. This is
750 used for certain optimizations that require the result or arguments
751 cannot alias. Note that this is zero for PURE procedures. */
752 unsigned implicit_pure:1;
754 /* This is set if the subroutine doesn't return. Currently, this
755 is only possible for intrinsic subroutines. */
758 /* Set if this procedure is an alternate entry point. These procedures
759 don't have any code associated, and the backend will turn them into
760 thunks to the master function. */
763 /* Set if this is the master function for a procedure with multiple
765 unsigned entry_master:1;
767 /* Set if this is the master function for a function with multiple
768 entry points where characteristics of the entry points differ. */
769 unsigned mixed_entry_master:1;
771 /* Set if a function must always be referenced by an explicit interface. */
772 unsigned always_explicit:1;
774 /* Set if the symbol is generated and, hence, standard violations
775 shouldn't be flaged. */
776 unsigned artificial:1;
778 /* Set if the symbol has been referenced in an expression. No further
779 modification of type or type parameters is permitted. */
780 unsigned referenced:1;
782 /* Set if this is the symbol for the main program. */
783 unsigned is_main_program:1;
785 /* Mutually exclusive multibit attributes. */
786 ENUM_BITFIELD (gfc_access) access:2;
787 ENUM_BITFIELD (sym_intent) intent:2;
788 ENUM_BITFIELD (sym_flavor) flavor:4;
789 ENUM_BITFIELD (ifsrc) if_source:2;
791 ENUM_BITFIELD (procedure_type) proc:3;
793 /* Special attributes for Cray pointers, pointees. */
794 unsigned cray_pointer:1, cray_pointee:1;
796 /* The symbol is a derived type with allocatable components, pointer
797 components or private components, procedure pointer components,
798 possibly nested. zero_comp is true if the derived type has no
799 component at all. defined_assign_comp is true if the derived
800 type or a (sub-)component has a typebound defined assignment.
801 unlimited_polymorphic flags the type of the container for these
803 unsigned alloc_comp:1, pointer_comp:1, proc_pointer_comp:1,
804 private_comp:1, zero_comp:1, coarray_comp:1, lock_comp:1,
805 defined_assign_comp:1, unlimited_polymorphic:1;
807 /* This is a temporary selector for SELECT TYPE or an associate
808 variable for SELECT_TYPE or ASSOCIATE. */
809 unsigned select_type_temporary:1, associate_var:1;
811 /* Attributes set by compiler extensions (!GCC$ ATTRIBUTES). */
812 unsigned ext_attr:EXT_ATTR_NUM;
814 /* The namespace where the attribute has been set. */
815 struct gfc_namespace *volatile_ns, *asynchronous_ns;
820 /* We need to store source lines as sequences of multibyte source
821 characters. We define here a type wide enough to hold any multibyte
822 source character, just like libcpp does. A 32-bit type is enough. */
824 #if HOST_BITS_PER_INT >= 32
825 typedef unsigned int gfc_char_t;
826 #elif HOST_BITS_PER_LONG >= 32
827 typedef unsigned long gfc_char_t;
828 #elif defined(HAVE_LONG_LONG) && (HOST_BITS_PER_LONGLONG >= 32)
829 typedef unsigned long long gfc_char_t;
831 # error "Cannot find an integer type with at least 32 bits"
835 /* The following three structures are used to identify a location in
838 gfc_file is used to maintain a tree of the source files and how
839 they include each other
841 gfc_linebuf holds a single line of source code and information
842 which file it resides in
844 locus point to the sourceline and the character in the source
848 typedef struct gfc_file
850 struct gfc_file *next, *up;
851 int inclusion_line, line;
855 typedef struct gfc_linebuf
857 source_location location;
858 struct gfc_file *file;
859 struct gfc_linebuf *next;
867 #define gfc_linebuf_header_size (offsetof (gfc_linebuf, line))
869 #define gfc_linebuf_linenum(LBUF) (LOCATION_LINE ((LBUF)->location))
877 /* In order for the "gfc" format checking to work correctly, you must
878 have declared a typedef locus first. */
879 #if GCC_VERSION >= 4001
880 #define ATTRIBUTE_GCC_GFC(m, n) __attribute__ ((__format__ (__gcc_gfc__, m, n))) ATTRIBUTE_NONNULL(m)
882 #define ATTRIBUTE_GCC_GFC(m, n) ATTRIBUTE_NONNULL(m)
886 /* Suppress error messages or re-enable them. */
888 void gfc_push_suppress_errors (void);
889 void gfc_pop_suppress_errors (void);
892 /* Character length structures hold the expression that gives the
893 length of a character variable. We avoid putting these into
894 gfc_typespec because doing so prevents us from doing structure
895 copies and forces us to deallocate any typespecs we create, as well
896 as structures that contain typespecs. They also can have multiple
897 character typespecs pointing to them.
899 These structures form a singly linked list within the current
900 namespace and are deallocated with the namespace. It is possible to
901 end up with gfc_charlen structures that have nothing pointing to them. */
903 typedef struct gfc_charlen
905 struct gfc_expr *length;
906 struct gfc_charlen *next;
907 bool length_from_typespec; /* Length from explicit array ctor typespec? */
909 tree passed_length; /* Length argument explicitly passed. */
915 #define gfc_get_charlen() XCNEW (gfc_charlen)
917 /* Type specification structure. */
925 struct gfc_symbol *derived; /* For derived types only. */
926 gfc_charlen *cl; /* For character types only. */
927 int pad; /* For hollerith types only. */
931 struct gfc_symbol *interface; /* For PROCEDURE declarations. */
939 /* Array specification. */
942 int rank; /* A scalar has a rank of 0, an assumed-rank array has -1. */
944 array_type type, cotype;
945 struct gfc_expr *lower[GFC_MAX_DIMENSIONS], *upper[GFC_MAX_DIMENSIONS];
947 /* These two fields are used with the Cray Pointer extension. */
948 bool cray_pointee; /* True iff this spec belongs to a cray pointee. */
949 bool cp_was_assumed; /* AS_ASSUMED_SIZE cp arrays are converted to
950 AS_EXPLICIT, but we want to remember that we
956 #define gfc_get_array_spec() XCNEW (gfc_array_spec)
959 /* Components of derived types. */
960 typedef struct gfc_component
965 symbol_attribute attr;
969 /* Used to cache a FIELD_DECL matching this same component
970 but applied to a different backend containing type that was
971 generated by gfc_nonrestricted_type. */
972 tree norestrict_decl;
974 struct gfc_expr *initializer;
975 struct gfc_component *next;
977 /* Needed for procedure pointer components. */
978 struct gfc_typebound_proc *tb;
982 #define gfc_get_component() XCNEW (gfc_component)
984 /* Formal argument lists are lists of symbols. */
985 typedef struct gfc_formal_arglist
987 /* Symbol representing the argument at this position in the arglist. */
988 struct gfc_symbol *sym;
989 /* Points to the next formal argument. */
990 struct gfc_formal_arglist *next;
994 #define gfc_get_formal_arglist() XCNEW (gfc_formal_arglist)
997 /* The gfc_actual_arglist structure is for actual arguments. */
998 typedef struct gfc_actual_arglist
1001 /* Alternate return label when the expr member is null. */
1002 struct gfc_st_label *label;
1004 /* This is set to the type of an eventual omitted optional
1005 argument. This is used to determine if a hidden string length
1006 argument has to be added to a function call. */
1007 bt missing_arg_type;
1009 struct gfc_expr *expr;
1010 struct gfc_actual_arglist *next;
1014 #define gfc_get_actual_arglist() XCNEW (gfc_actual_arglist)
1017 /* Because a symbol can belong to multiple namelists, they must be
1018 linked externally to the symbol itself. */
1019 typedef struct gfc_namelist
1021 struct gfc_symbol *sym;
1022 struct gfc_namelist *next;
1026 #define gfc_get_namelist() XCNEW (gfc_namelist)
1031 OMP_LIST_FIRSTPRIVATE,
1032 OMP_LIST_LASTPRIVATE,
1033 OMP_LIST_COPYPRIVATE,
1037 OMP_LIST_REDUCTION_FIRST = OMP_LIST_PLUS,
1049 OMP_LIST_REDUCTION_LAST = OMP_LIST_IEOR,
1053 /* Because a symbol can belong to multiple namelists, they must be
1054 linked externally to the symbol itself. */
1056 enum gfc_omp_sched_kind
1066 enum gfc_omp_default_sharing
1068 OMP_DEFAULT_UNKNOWN,
1070 OMP_DEFAULT_PRIVATE,
1072 OMP_DEFAULT_FIRSTPRIVATE
1075 typedef struct gfc_omp_clauses
1077 struct gfc_expr *if_expr;
1078 struct gfc_expr *final_expr;
1079 struct gfc_expr *num_threads;
1080 gfc_namelist *lists[OMP_LIST_NUM];
1081 enum gfc_omp_sched_kind sched_kind;
1082 struct gfc_expr *chunk_size;
1083 enum gfc_omp_default_sharing default_sharing;
1085 bool nowait, ordered, untied, mergeable;
1089 #define gfc_get_omp_clauses() XCNEW (gfc_omp_clauses)
1092 /* The gfc_st_label structure is a BBT attached to a namespace that
1093 records the usage of statement labels within that space. */
1095 typedef struct gfc_st_label
1097 BBT_HEADER(gfc_st_label);
1101 gfc_sl_type defined, referenced;
1103 struct gfc_expr *format;
1112 /* gfc_interface()-- Interfaces are lists of symbols strung together. */
1113 typedef struct gfc_interface
1115 struct gfc_symbol *sym;
1117 struct gfc_interface *next;
1121 #define gfc_get_interface() XCNEW (gfc_interface)
1123 /* User operator nodes. These are like stripped down symbols. */
1129 struct gfc_namespace *ns;
1135 /* A list of specific bindings that are associated with a generic spec. */
1136 typedef struct gfc_tbp_generic
1138 /* The parser sets specific_st, upon resolution we look for the corresponding
1139 gfc_typebound_proc and set specific for further use. */
1140 struct gfc_symtree* specific_st;
1141 struct gfc_typebound_proc* specific;
1143 struct gfc_tbp_generic* next;
1148 #define gfc_get_tbp_generic() XCNEW (gfc_tbp_generic)
1151 /* Data needed for type-bound procedures. */
1152 typedef struct gfc_typebound_proc
1154 locus where; /* Where the PROCEDURE/GENERIC definition was. */
1158 struct gfc_symtree* specific; /* The interface if DEFERRED. */
1159 gfc_tbp_generic* generic;
1164 const char* pass_arg; /* Argument-name for PASS. NULL if not specified. */
1166 /* The overridden type-bound proc (or GENERIC with this name in the
1167 parent-type) or NULL if non. */
1168 struct gfc_typebound_proc* overridden;
1170 /* Once resolved, we use the position of pass_arg in the formal arglist of
1171 the binding-target procedure to identify it. The first argument has
1172 number 1 here, the second 2, and so on. */
1173 unsigned pass_arg_num;
1175 unsigned nopass:1; /* Whether we have NOPASS (PASS otherwise). */
1176 unsigned non_overridable:1;
1177 unsigned deferred:1;
1178 unsigned is_generic:1;
1179 unsigned function:1, subroutine:1;
1180 unsigned error:1; /* Ignore it, when an error occurred during resolution. */
1186 /* Symbol nodes. These are important things. They are what the
1187 standard refers to as "entities". The possibly multiple names that
1188 refer to the same entity are accomplished by a binary tree of
1189 symtree structures that is balanced by the red-black method-- more
1190 than one symtree node can point to any given symbol. */
1192 typedef struct gfc_symbol
1194 const char *name; /* Primary name, before renaming */
1195 const char *module; /* Module this symbol came from */
1199 symbol_attribute attr;
1201 /* The formal member points to the formal argument list if the
1202 symbol is a function or subroutine name. If the symbol is a
1203 generic name, the generic member points to the list of
1206 gfc_interface *generic;
1207 gfc_access component_access;
1209 gfc_formal_arglist *formal;
1210 struct gfc_namespace *formal_ns;
1211 struct gfc_namespace *f2k_derived;
1213 struct gfc_expr *value; /* Parameter/Initializer value */
1215 struct gfc_symbol *result; /* function result symbol */
1216 gfc_component *components; /* Derived type components */
1218 /* Defined only for Cray pointees; points to their pointer. */
1219 struct gfc_symbol *cp_pointer;
1221 int entry_id; /* Used in resolve.c for entries. */
1223 /* CLASS hashed name for declared and dynamic types in the class. */
1226 struct gfc_symbol *common_next; /* Links for COMMON syms */
1228 /* This is in fact a gfc_common_head but it is only used for pointer
1229 comparisons to check if symbols are in the same common block. */
1230 struct gfc_common_head* common_head;
1232 /* Make sure setup code for dummy arguments is generated in the correct
1236 gfc_namelist *namelist, *namelist_tail;
1238 /* Change management fields. Symbols that might be modified by the
1239 current statement have the mark member nonzero and are kept in a
1240 singly linked list through the tlink field. Of these symbols,
1241 symbols with old_symbol equal to NULL are symbols created within
1242 the current statement. Otherwise, old_symbol points to a copy of
1245 struct gfc_symbol *old_symbol, *tlink;
1246 unsigned mark:1, gfc_new:1;
1247 /* Nonzero if all equivalences associated with this symbol have been
1249 unsigned equiv_built:1;
1250 /* Set if this variable is used as an index name in a FORALL. */
1251 unsigned forall_index:1;
1252 /* Used to avoid multiple resolutions of a single symbol. */
1253 unsigned resolved:1;
1256 struct gfc_namespace *ns; /* namespace containing this symbol */
1260 /* Identity of the intrinsic module the symbol comes from, or
1261 INTMOD_NONE if it's not imported from a intrinsic module. */
1262 intmod_id from_intmod;
1263 /* Identity of the symbol from intrinsic modules, from enums maintained
1264 separately by each intrinsic module. Used together with from_intmod,
1265 it uniquely identifies a symbol from an intrinsic module. */
1268 /* This may be repetitive, since the typespec now has a binding
1270 const char* binding_label;
1271 /* Store a reference to the common_block, if this symbol is in one. */
1272 struct gfc_common_head *common_block;
1274 /* Link to corresponding association-list if this is an associate name. */
1275 struct gfc_association_list *assoc;
1280 struct gfc_undo_change_set
1282 vec<gfc_symbol *> syms;
1283 vec<gfc_typebound_proc *> tbps;
1284 gfc_undo_change_set *previous;
1288 /* This structure is used to keep track of symbols in common blocks. */
1289 typedef struct gfc_common_head
1292 char use_assoc, saved, threadprivate;
1293 char name[GFC_MAX_SYMBOL_LEN + 1];
1294 struct gfc_symbol *head;
1295 const char* binding_label;
1301 #define gfc_get_common_head() XCNEW (gfc_common_head)
1304 /* A list of all the alternate entry points for a procedure. */
1306 typedef struct gfc_entry_list
1308 /* The symbol for this entry point. */
1310 /* The zero-based id of this entry point. */
1312 /* The LABEL_EXPR marking this entry point. */
1314 /* The next item in the list. */
1315 struct gfc_entry_list *next;
1319 #define gfc_get_entry_list() XCNEW (gfc_entry_list)
1321 /* Lists of rename info for the USE statement. */
1323 typedef struct gfc_use_rename
1325 char local_name[GFC_MAX_SYMBOL_LEN + 1], use_name[GFC_MAX_SYMBOL_LEN + 1];
1326 struct gfc_use_rename *next;
1328 gfc_intrinsic_op op;
1333 #define gfc_get_use_rename() XCNEW (gfc_use_rename);
1335 /* A list of all USE statements in a namespace. */
1337 typedef struct gfc_use_list
1339 const char *module_name;
1343 struct gfc_use_rename *rename;
1345 /* Next USE statement. */
1346 struct gfc_use_list *next;
1350 #define gfc_get_use_list() XCNEW (gfc_use_list)
1352 /* Within a namespace, symbols are pointed to by symtree nodes that
1353 are linked together in a balanced binary tree. There can be
1354 several symtrees pointing to the same symbol node via USE
1357 typedef struct gfc_symtree
1359 BBT_HEADER (gfc_symtree);
1364 gfc_symbol *sym; /* Symbol associated with this node */
1366 gfc_common_head *common;
1367 gfc_typebound_proc *tb;
1373 /* A linked list of derived types in the namespace. */
1374 typedef struct gfc_dt_list
1376 struct gfc_symbol *derived;
1377 struct gfc_dt_list *next;
1381 #define gfc_get_dt_list() XCNEW (gfc_dt_list)
1383 /* A list of all derived types. */
1384 extern gfc_dt_list *gfc_derived_types;
1386 /* A namespace describes the contents of procedure, module, interface block
1387 or BLOCK construct. */
1388 /* ??? Anything else use these? */
1390 typedef struct gfc_namespace
1392 /* Tree containing all the symbols in this namespace. */
1393 gfc_symtree *sym_root;
1394 /* Tree containing all the user-defined operators in the namespace. */
1395 gfc_symtree *uop_root;
1396 /* Tree containing all the common blocks. */
1397 gfc_symtree *common_root;
1399 /* Tree containing type-bound procedures. */
1400 gfc_symtree *tb_sym_root;
1401 /* Type-bound user operators. */
1402 gfc_symtree *tb_uop_root;
1403 /* For derived-types, store type-bound intrinsic operators here. */
1404 gfc_typebound_proc *tb_op[GFC_INTRINSIC_OPS];
1405 /* Linked list of finalizer procedures. */
1406 struct gfc_finalizer *finalizers;
1408 /* If set_flag[letter] is set, an implicit type has been set for letter. */
1409 int set_flag[GFC_LETTERS];
1410 /* Keeps track of the implicit types associated with the letters. */
1411 gfc_typespec default_type[GFC_LETTERS];
1412 /* Store the positions of IMPLICIT statements. */
1413 locus implicit_loc[GFC_LETTERS];
1415 /* If this is a namespace of a procedure, this points to the procedure. */
1416 struct gfc_symbol *proc_name;
1417 /* If this is the namespace of a unit which contains executable
1418 code, this points to it. */
1419 struct gfc_code *code;
1421 /* Points to the equivalences set up in this namespace. */
1422 struct gfc_equiv *equiv, *old_equiv;
1424 /* Points to the equivalence groups produced by trans_common. */
1425 struct gfc_equiv_list *equiv_lists;
1427 gfc_interface *op[GFC_INTRINSIC_OPS];
1429 /* Points to the parent namespace, i.e. the namespace of a module or
1430 procedure in which the procedure belonging to this namespace is
1431 contained. The parent namespace points to this namespace either
1432 directly via CONTAINED, or indirectly via the chain built by
1434 struct gfc_namespace *parent;
1435 /* CONTAINED points to the first contained namespace. Sibling
1436 namespaces are chained via SIBLING. */
1437 struct gfc_namespace *contained, *sibling;
1439 gfc_common_head blank_common;
1440 gfc_access default_access, operator_access[GFC_INTRINSIC_OPS];
1442 gfc_st_label *st_labels;
1443 /* This list holds information about all the data initializers in
1445 struct gfc_data *data;
1447 gfc_charlen *cl_list, *old_cl_list;
1449 gfc_dt_list *derived_types;
1451 int save_all, seen_save, seen_implicit_none;
1453 /* Normally we don't need to refcount namespaces. However when we read
1454 a module containing a function with multiple entry points, this
1455 will appear as several functions with the same formal namespace. */
1458 /* A list of all alternate entry points to this procedure (or NULL). */
1459 gfc_entry_list *entries;
1461 /* A list of USE statements in this namespace. */
1462 gfc_use_list *use_stmts;
1464 /* Set to 1 if namespace is a BLOCK DATA program unit. */
1465 unsigned is_block_data:1;
1467 /* Set to 1 if namespace is an interface body with "IMPORT" used. */
1468 unsigned has_import_set:1;
1470 /* Set to 1 if resolved has been called for this namespace.
1471 Holds -1 during resolution. */
1474 /* Set to 1 if code has been generated for this namespace. */
1475 unsigned translated:1;
1477 /* Set to 1 if symbols in this namespace should be 'construct entities',
1478 i.e. for BLOCK local variables. */
1479 unsigned construct_entities:1;
1483 extern gfc_namespace *gfc_current_ns;
1484 extern gfc_namespace *gfc_global_ns_list;
1486 /* Global symbols are symbols of global scope. Currently we only use
1487 this to detect collisions already when parsing.
1488 TODO: Extend to verify procedure calls. */
1490 enum gfc_symbol_type
1492 GSYM_UNKNOWN=1, GSYM_PROGRAM, GSYM_FUNCTION, GSYM_SUBROUTINE,
1493 GSYM_MODULE, GSYM_COMMON, GSYM_BLOCK_DATA
1496 typedef struct gfc_gsymbol
1498 BBT_HEADER(gfc_gsymbol);
1501 const char *sym_name;
1502 const char *mod_name;
1503 const char *binding_label;
1504 enum gfc_symbol_type type;
1512 extern gfc_gsymbol *gfc_gsym_root;
1514 /* Information on interfaces being built. */
1517 interface_type type;
1521 gfc_intrinsic_op op;
1525 extern gfc_interface_info current_interface;
1528 /* Array reference. */
1530 enum gfc_array_ref_dimen_type
1532 DIMEN_ELEMENT = 1, DIMEN_RANGE, DIMEN_VECTOR, DIMEN_STAR, DIMEN_THIS_IMAGE, DIMEN_UNKNOWN
1535 typedef struct gfc_array_ref
1538 int dimen; /* # of components in the reference */
1540 bool in_allocate; /* For coarray checks. */
1544 locus c_where[GFC_MAX_DIMENSIONS]; /* All expressions can be NULL */
1545 struct gfc_expr *start[GFC_MAX_DIMENSIONS], *end[GFC_MAX_DIMENSIONS],
1546 *stride[GFC_MAX_DIMENSIONS];
1548 enum gfc_array_ref_dimen_type dimen_type[GFC_MAX_DIMENSIONS];
1552 #define gfc_get_array_ref() XCNEW (gfc_array_ref)
1555 /* Component reference nodes. A variable is stored as an expression
1556 node that points to the base symbol. After that, a singly linked
1557 list of component reference nodes gives the variable's complete
1558 resolution. The array_ref component may be present and comes
1559 before the component component. */
1562 { REF_ARRAY, REF_COMPONENT, REF_SUBSTRING }
1565 typedef struct gfc_ref
1571 struct gfc_array_ref ar;
1575 gfc_component *component;
1582 struct gfc_expr *start, *end; /* Substring */
1583 gfc_charlen *length;
1590 struct gfc_ref *next;
1594 #define gfc_get_ref() XCNEW (gfc_ref)
1597 /* Structures representing intrinsic symbols and their arguments lists. */
1598 typedef struct gfc_intrinsic_arg
1600 char name[GFC_MAX_SYMBOL_LEN + 1];
1603 unsigned optional:1, value:1;
1604 ENUM_BITFIELD (sym_intent) intent:2;
1605 gfc_actual_arglist *actual;
1607 struct gfc_intrinsic_arg *next;
1613 /* Specifies the various kinds of check functions used to verify the
1614 argument lists of intrinsic functions. fX with X an integer refer
1615 to check functions of intrinsics with X arguments. f1m is used for
1616 the MAX and MIN intrinsics which can have an arbitrary number of
1617 arguments, f3ml is used for the MINLOC and MAXLOC intrinsics as
1618 these have special semantics. */
1622 gfc_try (*f0)(void);
1623 gfc_try (*f1)(struct gfc_expr *);
1624 gfc_try (*f1m)(gfc_actual_arglist *);
1625 gfc_try (*f2)(struct gfc_expr *, struct gfc_expr *);
1626 gfc_try (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1627 gfc_try (*f3ml)(gfc_actual_arglist *);
1628 gfc_try (*f3red)(gfc_actual_arglist *);
1629 gfc_try (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1631 gfc_try (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1632 struct gfc_expr *, struct gfc_expr *);
1636 /* Like gfc_check_f, these specify the type of the simplification
1637 function associated with an intrinsic. The fX are just like in
1638 gfc_check_f. cc is used for type conversion functions. */
1642 struct gfc_expr *(*f0)(void);
1643 struct gfc_expr *(*f1)(struct gfc_expr *);
1644 struct gfc_expr *(*f2)(struct gfc_expr *, struct gfc_expr *);
1645 struct gfc_expr *(*f3)(struct gfc_expr *, struct gfc_expr *,
1647 struct gfc_expr *(*f4)(struct gfc_expr *, struct gfc_expr *,
1648 struct gfc_expr *, struct gfc_expr *);
1649 struct gfc_expr *(*f5)(struct gfc_expr *, struct gfc_expr *,
1650 struct gfc_expr *, struct gfc_expr *,
1652 struct gfc_expr *(*cc)(struct gfc_expr *, bt, int);
1656 /* Again like gfc_check_f, these specify the type of the resolution
1657 function associated with an intrinsic. The fX are just like in
1658 gfc_check_f. f1m is used for MIN and MAX, s1 is used for abort(). */
1662 void (*f0)(struct gfc_expr *);
1663 void (*f1)(struct gfc_expr *, struct gfc_expr *);
1664 void (*f1m)(struct gfc_expr *, struct gfc_actual_arglist *);
1665 void (*f2)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1666 void (*f3)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1668 void (*f4)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1669 struct gfc_expr *, struct gfc_expr *);
1670 void (*f5)(struct gfc_expr *, struct gfc_expr *, struct gfc_expr *,
1671 struct gfc_expr *, struct gfc_expr *, struct gfc_expr *);
1672 void (*s1)(struct gfc_code *);
1677 typedef struct gfc_intrinsic_sym
1679 const char *name, *lib_name;
1680 gfc_intrinsic_arg *formal;
1682 unsigned elemental:1, inquiry:1, transformational:1, pure:1,
1683 generic:1, specific:1, actual_ok:1, noreturn:1, conversion:1,
1688 gfc_simplify_f simplify;
1690 gfc_resolve_f resolve;
1691 struct gfc_intrinsic_sym *specific_head, *next;
1698 /* Expression nodes. The expression node types deserve explanations,
1699 since the last couple can be easily misconstrued:
1701 EXPR_OP Operator node pointing to one or two other nodes
1702 EXPR_FUNCTION Function call, symbol points to function's name
1703 EXPR_CONSTANT A scalar constant: Logical, String, Real, Int or Complex
1704 EXPR_VARIABLE An Lvalue with a root symbol and possible reference list
1705 which expresses structure, array and substring refs.
1706 EXPR_NULL The NULL pointer value (which also has a basic type).
1707 EXPR_SUBSTRING A substring of a constant string
1708 EXPR_STRUCTURE A structure constructor
1709 EXPR_ARRAY An array constructor.
1710 EXPR_COMPCALL Function (or subroutine) call of a procedure pointer
1711 component or type-bound procedure. */
1715 #define GFC_RND_MODE GMP_RNDN
1716 #define GFC_MPC_RND_MODE MPC_RNDNN
1718 typedef splay_tree gfc_constructor_base;
1720 typedef struct gfc_expr
1724 gfc_typespec ts; /* These two refer to the overall expression */
1726 int rank; /* 0 indicates a scalar, -1 an assumed-rank array. */
1727 mpz_t *shape; /* Can be NULL if shape is unknown at compile time */
1729 /* Nonnull for functions and structure constructors, may also used to hold the
1730 base-object for component calls. */
1731 gfc_symtree *symtree;
1737 /* Used to store the base expression in component calls, when the expression
1738 is not a variable. */
1739 struct gfc_expr *base_expr;
1741 /* is_boz is true if the integer is regarded as BOZ bit pattern and is_snan
1742 denotes a signalling not-a-number. */
1743 unsigned int is_boz : 1, is_snan : 1;
1745 /* Sometimes, when an error has been emitted, it is necessary to prevent
1746 it from recurring. */
1747 unsigned int error : 1;
1749 /* Mark an expression where a user operator has been substituted by
1750 a function call in interface.c(gfc_extend_expr). */
1751 unsigned int user_operator : 1;
1753 /* Mark an expression as being a MOLD argument of ALLOCATE. */
1754 unsigned int mold : 1;
1756 /* If an expression comes from a Hollerith constant or compile-time
1757 evaluation of a transfer statement, it may have a prescribed target-
1758 memory representation, and these cannot always be backformed from
1781 gfc_intrinsic_op op;
1783 struct gfc_expr *op1, *op2;
1789 gfc_actual_arglist *actual;
1790 const char *name; /* Points to the ultimate name of the function */
1791 gfc_intrinsic_sym *isym;
1798 gfc_actual_arglist* actual;
1800 /* Base-object, whose component was called. NULL means that it should
1801 be taken from symtree/ref. */
1802 struct gfc_expr* base_object;
1803 gfc_typebound_proc* tbp; /* Should overlap with esym. */
1805 /* For type-bound operators, we want to call PASS procedures but already
1806 have the full arglist; mark this, so that it is not extended by the
1808 unsigned ignore_pass:1;
1810 /* Do assign-calls rather than calls, that is appropriate dependency
1823 gfc_constructor_base constructor;
1831 #define gfc_get_shape(rank) (XCNEWVEC (mpz_t, (rank)))
1833 /* Structures for information associated with different kinds of
1834 numbers. The first set of integer parameters define all there is
1835 to know about a particular kind. The rest of the elements are
1836 computed from the first elements. */
1840 /* Values really representable by the target. */
1841 mpz_t huge, pedantic_min_int, min_int;
1843 int kind, radix, digits, bit_size, range;
1845 /* True if the C type of the given name maps to this precision.
1846 Note that more than one bit can be set. */
1847 unsigned int c_char : 1;
1848 unsigned int c_short : 1;
1849 unsigned int c_int : 1;
1850 unsigned int c_long : 1;
1851 unsigned int c_long_long : 1;
1855 extern gfc_integer_info gfc_integer_kinds[];
1862 /* True if the C++ type bool, C99 type _Bool, maps to this precision. */
1863 unsigned int c_bool : 1;
1867 extern gfc_logical_info gfc_logical_kinds[];
1872 mpfr_t epsilon, huge, tiny, subnormal;
1873 int kind, radix, digits, min_exponent, max_exponent;
1874 int range, precision;
1876 /* The precision of the type as reported by GET_MODE_PRECISION. */
1879 /* True if the C type of the given name maps to this precision.
1880 Note that more than one bit can be set. */
1881 unsigned int c_float : 1;
1882 unsigned int c_double : 1;
1883 unsigned int c_long_double : 1;
1884 unsigned int c_float128 : 1;
1888 extern gfc_real_info gfc_real_kinds[];
1897 extern gfc_character_info gfc_character_kinds[];
1900 /* Equivalence structures. Equivalent lvalues are linked along the
1901 *eq pointer, equivalence sets are strung along the *next node. */
1902 typedef struct gfc_equiv
1904 struct gfc_equiv *next, *eq;
1911 #define gfc_get_equiv() XCNEW (gfc_equiv)
1913 /* Holds a single equivalence member after processing. */
1914 typedef struct gfc_equiv_info
1917 HOST_WIDE_INT offset;
1918 HOST_WIDE_INT length;
1919 struct gfc_equiv_info *next;
1922 /* Holds equivalence groups, after they have been processed. */
1923 typedef struct gfc_equiv_list
1925 gfc_equiv_info *equiv;
1926 struct gfc_equiv_list *next;
1929 /* gfc_case stores the selector list of a case statement. The *low
1930 and *high pointers can point to the same expression in the case of
1931 a single value. If *high is NULL, the selection is from *low
1932 upwards, if *low is NULL the selection is *high downwards.
1934 This structure has separate fields to allow single and double linked
1935 lists of CASEs at the same time. The singe linked list along the NEXT
1936 field is a list of cases for a single CASE label. The double linked
1937 list along the LEFT/RIGHT fields is used to detect overlap and to
1938 build a table of the cases for SELECT constructs with a CHARACTER
1941 typedef struct gfc_case
1943 /* Where we saw this case. */
1947 /* Case range values. If (low == high), it's a single value. If one of
1948 the labels is NULL, it's an unbounded case. If both are NULL, this
1949 represents the default case. */
1950 gfc_expr *low, *high;
1952 /* Only used for SELECT TYPE. */
1955 /* Next case label in the list of cases for a single CASE label. */
1956 struct gfc_case *next;
1958 /* Used for detecting overlap, and for code generation. */
1959 struct gfc_case *left, *right;
1961 /* True if this case label can never be matched. */
1966 #define gfc_get_case() XCNEW (gfc_case)
1971 gfc_expr *var, *start, *end, *step;
1975 #define gfc_get_iterator() XCNEW (gfc_iterator)
1978 /* Allocation structure for ALLOCATE, DEALLOCATE and NULLIFY statements. */
1980 typedef struct gfc_alloc
1983 struct gfc_alloc *next;
1987 #define gfc_get_alloc() XCNEW (gfc_alloc)
1992 gfc_expr *unit, *file, *status, *access, *form, *recl,
1993 *blank, *position, *action, *delim, *pad, *iostat, *iomsg, *convert,
1994 *decimal, *encoding, *round, *sign, *asynchronous, *id, *newunit;
2002 gfc_expr *unit, *status, *iostat, *iomsg;
2010 gfc_expr *unit, *iostat, *iomsg;
2018 gfc_expr *unit, *file, *iostat, *exist, *opened, *number, *named,
2019 *name, *access, *sequential, *direct, *form, *formatted,
2020 *unformatted, *recl, *nextrec, *blank, *position, *action, *read,
2021 *write, *readwrite, *delim, *pad, *iolength, *iomsg, *convert, *strm_pos,
2022 *asynchronous, *decimal, *encoding, *pending, *round, *sign, *size, *id,
2033 gfc_expr *unit, *iostat, *iomsg, *id;
2034 gfc_st_label *err, *end, *eor;
2041 gfc_expr *io_unit, *format_expr, *rec, *advance, *iostat, *size, *iomsg,
2042 *id, *pos, *asynchronous, *blank, *decimal, *delim, *pad, *round,
2043 *sign, *extra_comma, *dt_io_kind;
2045 gfc_symbol *namelist;
2046 /* A format_label of `format_asterisk' indicates the "*" format */
2047 gfc_st_label *format_label;
2048 gfc_st_label *err, *end, *eor;
2050 locus eor_where, end_where, err_where;
2055 typedef struct gfc_forall_iterator
2057 gfc_expr *var, *start, *end, *stride;
2058 struct gfc_forall_iterator *next;
2060 gfc_forall_iterator;
2063 /* Linked list to store associations in an ASSOCIATE statement. */
2065 typedef struct gfc_association_list
2067 struct gfc_association_list *next;
2069 /* Whether this is association to a variable that can be changed; otherwise,
2070 it's association to an expression and the name may not be used as
2072 unsigned variable:1;
2074 /* True if this struct is currently only linked to from a gfc_symbol rather
2075 than as part of a real list in gfc_code->ext.block.assoc. This may
2076 happen for SELECT TYPE temporaries and must be considered
2077 for memory handling. */
2078 unsigned dangling:1;
2080 char name[GFC_MAX_SYMBOL_LEN + 1];
2081 gfc_symtree *st; /* Symtree corresponding to name. */
2086 gfc_association_list;
2087 #define gfc_get_association_list() XCNEW (gfc_association_list)
2090 /* Executable statements that fill gfc_code structures. */
2093 EXEC_NOP = 1, EXEC_END_NESTED_BLOCK, EXEC_END_BLOCK, EXEC_ASSIGN,
2094 EXEC_LABEL_ASSIGN, EXEC_POINTER_ASSIGN, EXEC_CRITICAL, EXEC_ERROR_STOP,
2095 EXEC_GOTO, EXEC_CALL, EXEC_COMPCALL, EXEC_ASSIGN_CALL, EXEC_RETURN,
2096 EXEC_ENTRY, EXEC_PAUSE, EXEC_STOP, EXEC_CONTINUE, EXEC_INIT_ASSIGN,
2097 EXEC_IF, EXEC_ARITHMETIC_IF, EXEC_DO, EXEC_DO_CONCURRENT, EXEC_DO_WHILE,
2098 EXEC_SELECT, EXEC_BLOCK, EXEC_FORALL, EXEC_WHERE, EXEC_CYCLE, EXEC_EXIT,
2099 EXEC_CALL_PPC, EXEC_ALLOCATE, EXEC_DEALLOCATE, EXEC_END_PROCEDURE,
2100 EXEC_SELECT_TYPE, EXEC_SYNC_ALL, EXEC_SYNC_MEMORY, EXEC_SYNC_IMAGES,
2101 EXEC_OPEN, EXEC_CLOSE, EXEC_WAIT,
2102 EXEC_READ, EXEC_WRITE, EXEC_IOLENGTH, EXEC_TRANSFER, EXEC_DT_END,
2103 EXEC_BACKSPACE, EXEC_ENDFILE, EXEC_INQUIRE, EXEC_REWIND, EXEC_FLUSH,
2104 EXEC_LOCK, EXEC_UNLOCK,
2105 EXEC_OMP_CRITICAL, EXEC_OMP_DO, EXEC_OMP_FLUSH, EXEC_OMP_MASTER,
2106 EXEC_OMP_ORDERED, EXEC_OMP_PARALLEL, EXEC_OMP_PARALLEL_DO,
2107 EXEC_OMP_PARALLEL_SECTIONS, EXEC_OMP_PARALLEL_WORKSHARE,
2108 EXEC_OMP_SECTIONS, EXEC_OMP_SINGLE, EXEC_OMP_WORKSHARE,
2109 EXEC_OMP_ATOMIC, EXEC_OMP_BARRIER, EXEC_OMP_END_NOWAIT,
2110 EXEC_OMP_END_SINGLE, EXEC_OMP_TASK, EXEC_OMP_TASKWAIT,
2117 GFC_OMP_ATOMIC_UPDATE,
2118 GFC_OMP_ATOMIC_READ,
2119 GFC_OMP_ATOMIC_WRITE,
2120 GFC_OMP_ATOMIC_CAPTURE
2124 typedef struct gfc_code
2128 struct gfc_code *block, *next;
2131 gfc_st_label *here, *label1, *label2, *label3;
2132 gfc_symtree *symtree;
2133 gfc_expr *expr1, *expr2, *expr3, *expr4;
2134 /* A name isn't sufficient to identify a subroutine, we need the actual
2135 symbol for the interface definition.
2136 const char *sub_name; */
2137 gfc_symbol *resolved_sym;
2138 gfc_intrinsic_sym *resolved_isym;
2142 gfc_actual_arglist *actual;
2143 gfc_iterator *iterator;
2155 gfc_association_list *assoc;
2156 gfc_case *case_list;
2162 gfc_filepos *filepos;
2163 gfc_inquire *inquire;
2166 gfc_forall_iterator *forall_iterator;
2167 struct gfc_code *which_construct;
2169 gfc_entry_list *entry;
2170 gfc_omp_clauses *omp_clauses;
2171 const char *omp_name;
2172 gfc_namelist *omp_namelist;
2174 gfc_omp_atomic_op omp_atomic;
2176 ext; /* Points to additional structures required by statement */
2178 /* Cycle and break labels in constructs. */
2185 /* Storage for DATA statements. */
2186 typedef struct gfc_data_variable
2190 struct gfc_data_variable *list, *next;
2195 typedef struct gfc_data_value
2199 struct gfc_data_value *next;
2204 typedef struct gfc_data
2206 gfc_data_variable *var;
2207 gfc_data_value *value;
2210 struct gfc_data *next;
2215 /* Structure for holding compile options */
2219 gfc_source_form source_form;
2220 /* Maximum line lengths in fixed- and free-form source, respectively.
2221 When fixed_line_length or free_line_length are 0, the whole line is used,
2222 regardless of length.
2224 If the user requests a fixed_line_length <7 then gfc_init_options()
2225 emits a fatal error. */
2226 int fixed_line_length;
2227 int free_line_length;
2228 /* Maximum number of continuation lines in fixed- and free-form source,
2230 int max_continue_fixed;
2231 int max_continue_free;
2232 int max_identifier_length;
2233 int dump_fortran_original;
2234 int dump_fortran_optimized;
2238 int gfc_warn_conversion;
2239 int warn_c_binding_type;
2240 int warn_conversion_extra;
2241 int warn_function_elimination;
2242 int warn_implicit_interface;
2243 int warn_implicit_procedure;
2244 int warn_line_truncation;
2245 int warn_surprising;
2248 int warn_intrinsic_shadow;
2249 int warn_intrinsics_std;
2250 int warn_character_truncation;
2251 int warn_array_temp;
2252 int warn_align_commons;
2253 int warn_real_q_constant;
2254 int warn_unused_dummy_argument;
2255 int warn_realloc_lhs;
2256 int warn_realloc_lhs_all;
2257 int warn_compare_reals;
2258 int warn_target_lifetime;
2261 int flag_all_intrinsics;
2262 int flag_default_double;
2263 int flag_default_integer;
2264 int flag_default_real;
2265 int flag_integer4_kind;
2266 int flag_real4_kind;
2267 int flag_real8_kind;
2269 int flag_underscoring;
2270 int flag_second_underscore;
2271 int flag_implicit_none;
2272 int flag_max_stack_var_size;
2273 int flag_max_array_constructor;
2274 int flag_range_check;
2275 int flag_pack_derived;
2276 int flag_repack_arrays;
2277 int flag_preprocessed;
2282 int flag_allow_leading_underscore;
2283 int flag_external_blas;
2284 int blas_matmul_limit;
2285 int flag_cray_pointer;
2287 int gfc_flag_openmp;
2289 int flag_stack_arrays;
2290 int flag_module_private;
2292 int flag_init_local_zero;
2293 int flag_init_integer;
2294 int flag_init_integer_value;
2296 int flag_init_logical;
2297 int flag_init_character;
2298 char flag_init_character_value;
2299 int flag_align_commons;
2300 int flag_whole_file;
2301 int flag_protect_parens;
2302 int flag_realloc_lhs;
2303 int flag_aggressive_function_elimination;
2304 int flag_frontend_optimize;
2308 gfc_fcoarray coarray;
2314 int max_subrecord_length;
2318 extern gfc_option_t gfc_option;
2320 /* Constructor nodes for array and structure constructors. */
2321 typedef struct gfc_constructor
2323 gfc_constructor_base base;
2324 mpz_t offset; /* Offset within a constructor, used as
2328 gfc_iterator *iterator;
2333 gfc_component *component; /* Record the component being initialized. */
2336 mpz_t repeat; /* Record the repeat number of initial values in data
2337 statement like "data a/5*10/". */
2342 typedef struct iterator_stack
2344 gfc_symtree *variable;
2346 struct iterator_stack *prev;
2349 extern iterator_stack *iter_stack;
2352 /* Used for (possibly nested) SELECT TYPE statements. */
2353 typedef struct gfc_select_type_stack
2355 gfc_symbol *selector; /* Current selector variable. */
2356 gfc_symtree *tmp; /* Current temporary variable. */
2357 struct gfc_select_type_stack *prev; /* Previous element on stack. */
2359 gfc_select_type_stack;
2360 extern gfc_select_type_stack *select_type_stack;
2361 #define gfc_get_select_type_stack() XCNEW (gfc_select_type_stack)
2364 /* Node in the linked list used for storing finalizer procedures. */
2366 typedef struct gfc_finalizer
2368 struct gfc_finalizer* next;
2369 locus where; /* Where the FINAL declaration occurred. */
2371 /* Up to resolution, we want the gfc_symbol, there we lookup the corresponding
2372 symtree and later need only that. This way, we can access and call the
2373 finalizers from every context as they should be "always accessible". I
2374 don't make this a union because we need the information whether proc_sym is
2375 still referenced or not for dereferencing it on deleting a gfc_finalizer
2377 gfc_symbol* proc_sym;
2378 gfc_symtree* proc_tree;
2381 #define gfc_get_finalizer() XCNEW (gfc_finalizer)
2384 /************************ Function prototypes *************************/
2387 bool gfc_in_match_data (void);
2388 match gfc_match_char_spec (gfc_typespec *);
2391 void gfc_scanner_done_1 (void);
2392 void gfc_scanner_init_1 (void);
2394 void gfc_add_include_path (const char *, bool, bool, bool);
2395 void gfc_add_intrinsic_modules_path (const char *);
2396 void gfc_release_include_path (void);
2397 FILE *gfc_open_included_file (const char *, bool, bool);
2398 FILE *gfc_open_intrinsic_module (const char *);
2400 int gfc_at_end (void);
2401 int gfc_at_eof (void);
2402 int gfc_at_bol (void);
2403 int gfc_at_eol (void);
2404 void gfc_advance_line (void);
2405 int gfc_check_include (void);
2406 int gfc_define_undef_line (void);
2408 int gfc_wide_is_printable (gfc_char_t);
2409 int gfc_wide_is_digit (gfc_char_t);
2410 int gfc_wide_fits_in_byte (gfc_char_t);
2411 gfc_char_t gfc_wide_tolower (gfc_char_t);
2412 gfc_char_t gfc_wide_toupper (gfc_char_t);
2413 size_t gfc_wide_strlen (const gfc_char_t *);
2414 int gfc_wide_strncasecmp (const gfc_char_t *, const char *, size_t);
2415 gfc_char_t *gfc_wide_memset (gfc_char_t *, gfc_char_t, size_t);
2416 char *gfc_widechar_to_char (const gfc_char_t *, int);
2417 gfc_char_t *gfc_char_to_widechar (const char *);
2419 #define gfc_get_wide_string(n) XCNEWVEC (gfc_char_t, n)
2421 void gfc_skip_comments (void);
2422 gfc_char_t gfc_next_char_literal (gfc_instring);
2423 gfc_char_t gfc_next_char (void);
2424 char gfc_next_ascii_char (void);
2425 gfc_char_t gfc_peek_char (void);
2426 char gfc_peek_ascii_char (void);
2427 void gfc_error_recovery (void);
2428 void gfc_gobble_whitespace (void);
2429 gfc_try gfc_new_file (void);
2430 const char * gfc_read_orig_filename (const char *, const char **);
2432 extern gfc_source_form gfc_current_form;
2433 extern const char *gfc_source_file;
2434 extern locus gfc_current_locus;
2436 void gfc_start_source_files (void);
2437 void gfc_end_source_files (void);
2440 int gfc_terminal_width (void);
2441 void gfc_clear_ts (gfc_typespec *);
2442 FILE *gfc_open_file (const char *);
2443 const char *gfc_basic_typename (bt);
2444 const char *gfc_typename (gfc_typespec *);
2445 const char *gfc_op2string (gfc_intrinsic_op);
2446 const char *gfc_code2string (const mstring *, int);
2447 int gfc_string2code (const mstring *, const char *);
2448 const char *gfc_intent_string (sym_intent);
2450 void gfc_init_1 (void);
2451 void gfc_init_2 (void);
2452 void gfc_done_1 (void);
2453 void gfc_done_2 (void);
2455 int get_c_kind (const char *, CInteropKind_t *);
2458 unsigned int gfc_option_lang_mask (void);
2459 void gfc_init_options_struct (struct gcc_options *);
2460 void gfc_init_options (unsigned int,
2461 struct cl_decoded_option *);
2462 bool gfc_handle_option (size_t, const char *, int, int, location_t,
2463 const struct cl_option_handlers *);
2464 bool gfc_post_options (const char **);
2465 char *gfc_get_option_string (void);
2468 void gfc_maybe_initialize_eh (void);
2471 const char * gfc_get_string (const char *, ...) ATTRIBUTE_PRINTF_1;
2472 bool gfc_find_sym_in_expr (gfc_symbol *, gfc_expr *);
2476 typedef struct gfc_error_buf
2479 size_t allocated, index;
2483 void gfc_error_init_1 (void);
2484 void gfc_buffer_error (int);
2486 const char *gfc_print_wide_char (gfc_char_t);
2488 void gfc_warning (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2489 void gfc_warning_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2490 void gfc_clear_warning (void);
2491 void gfc_warning_check (void);
2493 void gfc_error (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2494 void gfc_error_now (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
2495 void gfc_fatal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2496 void gfc_internal_error (const char *, ...) ATTRIBUTE_NORETURN ATTRIBUTE_GCC_GFC(1,2);
2497 void gfc_clear_error (void);
2498 int gfc_error_check (void);
2499 int gfc_error_flag_test (void);
2501 notification gfc_notification_std (int);
2502 gfc_try gfc_notify_std (int, const char *, ...) ATTRIBUTE_GCC_GFC(2,3);
2504 /* A general purpose syntax error. */
2505 #define gfc_syntax_error(ST) \
2506 gfc_error ("Syntax error in %s statement at %C", gfc_ascii_statement (ST));
2508 void gfc_push_error (gfc_error_buf *);
2509 void gfc_pop_error (gfc_error_buf *);
2510 void gfc_free_error (gfc_error_buf *);
2512 void gfc_get_errors (int *, int *);
2513 void gfc_errors_to_warnings (int);
2516 void gfc_arith_init_1 (void);
2517 void gfc_arith_done_1 (void);
2518 arith gfc_check_integer_range (mpz_t p, int kind);
2519 bool gfc_check_character_range (gfc_char_t, int);
2522 gfc_try gfc_check_any_c_kind (gfc_typespec *);
2523 int gfc_validate_kind (bt, int, bool);
2524 int gfc_get_int_kind_from_width_isofortranenv (int size);
2525 int gfc_get_real_kind_from_width_isofortranenv (int size);
2526 tree gfc_get_derived_type (gfc_symbol * derived);
2527 extern int gfc_index_integer_kind;
2528 extern int gfc_default_integer_kind;
2529 extern int gfc_max_integer_kind;
2530 extern int gfc_default_real_kind;
2531 extern int gfc_default_double_kind;
2532 extern int gfc_default_character_kind;
2533 extern int gfc_default_logical_kind;
2534 extern int gfc_default_complex_kind;
2535 extern int gfc_c_int_kind;
2536 extern int gfc_atomic_int_kind;
2537 extern int gfc_atomic_logical_kind;
2538 extern int gfc_intio_kind;
2539 extern int gfc_charlen_int_kind;
2540 extern int gfc_numeric_storage_size;
2541 extern int gfc_character_storage_size;
2544 void gfc_clear_new_implicit (void);
2545 gfc_try gfc_add_new_implicit_range (int, int);
2546 gfc_try gfc_merge_new_implicit (gfc_typespec *);
2547 void gfc_set_implicit_none (void);
2548 void gfc_check_function_type (gfc_namespace *);
2549 bool gfc_is_intrinsic_typename (const char *);
2551 gfc_typespec *gfc_get_default_type (const char *, gfc_namespace *);
2552 gfc_try gfc_set_default_type (gfc_symbol *, int, gfc_namespace *);
2554 void gfc_set_sym_referenced (gfc_symbol *);
2556 gfc_try gfc_add_attribute (symbol_attribute *, locus *);
2557 gfc_try gfc_add_ext_attribute (symbol_attribute *, ext_attr_id_t, locus *);
2558 gfc_try gfc_add_allocatable (symbol_attribute *, locus *);
2559 gfc_try gfc_add_codimension (symbol_attribute *, const char *, locus *);
2560 gfc_try gfc_add_contiguous (symbol_attribute *, const char *, locus *);
2561 gfc_try gfc_add_dimension (symbol_attribute *, const char *, locus *);
2562 gfc_try gfc_add_external (symbol_attribute *, locus *);
2563 gfc_try gfc_add_intrinsic (symbol_attribute *, locus *);
2564 gfc_try gfc_add_optional (symbol_attribute *, locus *);
2565 gfc_try gfc_add_pointer (symbol_attribute *, locus *);
2566 gfc_try gfc_add_cray_pointer (symbol_attribute *, locus *);
2567 gfc_try gfc_add_cray_pointee (symbol_attribute *, locus *);
2568 match gfc_mod_pointee_as (gfc_array_spec *);
2569 gfc_try gfc_add_protected (symbol_attribute *, const char *, locus *);
2570 gfc_try gfc_add_result (symbol_attribute *, const char *, locus *);
2571 gfc_try gfc_add_save (symbol_attribute *, save_state, const char *, locus *);
2572 gfc_try gfc_add_threadprivate (symbol_attribute *, const char *, locus *);
2573 gfc_try gfc_add_saved_common (symbol_attribute *, locus *);
2574 gfc_try gfc_add_target (symbol_attribute *, locus *);
2575 gfc_try gfc_add_dummy (symbol_attribute *, const char *, locus *);
2576 gfc_try gfc_add_generic (symbol_attribute *, const char *, locus *);
2577 gfc_try gfc_add_common (symbol_attribute *, locus *);
2578 gfc_try gfc_add_in_common (symbol_attribute *, const char *, locus *);
2579 gfc_try gfc_add_in_equivalence (symbol_attribute *, const char *, locus *);
2580 gfc_try gfc_add_data (symbol_attribute *, const char *, locus *);
2581 gfc_try gfc_add_in_namelist (symbol_attribute *, const char *, locus *);
2582 gfc_try gfc_add_sequence (symbol_attribute *, const char *, locus *);
2583 gfc_try gfc_add_elemental (symbol_attribute *, locus *);
2584 gfc_try gfc_add_pure (symbol_attribute *, locus *);
2585 gfc_try gfc_add_recursive (symbol_attribute *, locus *);
2586 gfc_try gfc_add_function (symbol_attribute *, const char *, locus *);
2587 gfc_try gfc_add_subroutine (symbol_attribute *, const char *, locus *);
2588 gfc_try gfc_add_volatile (symbol_attribute *, const char *, locus *);
2589 gfc_try gfc_add_asynchronous (symbol_attribute *, const char *, locus *);
2590 gfc_try gfc_add_proc (symbol_attribute *attr, const char *name, locus *where);
2591 gfc_try gfc_add_abstract (symbol_attribute* attr, locus* where);
2593 gfc_try gfc_add_access (symbol_attribute *, gfc_access, const char *, locus *);
2594 gfc_try gfc_add_is_bind_c (symbol_attribute *, const char *, locus *, int);
2595 gfc_try gfc_add_extension (symbol_attribute *, locus *);
2596 gfc_try gfc_add_value (symbol_attribute *, const char *, locus *);
2597 gfc_try gfc_add_flavor (symbol_attribute *, sym_flavor, const char *, locus *);
2598 gfc_try gfc_add_entry (symbol_attribute *, const char *, locus *);
2599 gfc_try gfc_add_procedure (symbol_attribute *, procedure_type,
2600 const char *, locus *);
2601 gfc_try gfc_add_intent (symbol_attribute *, sym_intent, locus *);
2602 gfc_try gfc_add_explicit_interface (gfc_symbol *, ifsrc,
2603 gfc_formal_arglist *, locus *);
2604 gfc_try gfc_add_type (gfc_symbol *, gfc_typespec *, locus *);
2606 void gfc_clear_attr (symbol_attribute *);
2607 gfc_try gfc_missing_attr (symbol_attribute *, locus *);
2608 gfc_try gfc_copy_attr (symbol_attribute *, symbol_attribute *, locus *);
2610 gfc_try gfc_add_component (gfc_symbol *, const char *, gfc_component **);
2611 gfc_symbol *gfc_use_derived (gfc_symbol *);
2612 gfc_symtree *gfc_use_derived_tree (gfc_symtree *);
2613 gfc_component *gfc_find_component (gfc_symbol *, const char *, bool, bool);
2615 gfc_st_label *gfc_get_st_label (int);
2616 void gfc_free_st_label (gfc_st_label *);
2617 void gfc_define_st_label (gfc_st_label *, gfc_sl_type, locus *);
2618 gfc_try gfc_reference_st_label (gfc_st_label *, gfc_sl_type);
2620 gfc_namespace *gfc_get_namespace (gfc_namespace *, int);
2621 gfc_symtree *gfc_new_symtree (gfc_symtree **, const char *);
2622 gfc_symtree *gfc_find_symtree (gfc_symtree *, const char *);
2623 void gfc_delete_symtree (gfc_symtree **, const char *);
2624 gfc_symtree *gfc_get_unique_symtree (gfc_namespace *);
2625 gfc_user_op *gfc_get_uop (const char *);
2626 gfc_user_op *gfc_find_uop (const char *, gfc_namespace *);
2627 void gfc_free_symbol (gfc_symbol *);
2628 void gfc_release_symbol (gfc_symbol *);
2629 gfc_symbol *gfc_new_symbol (const char *, gfc_namespace *);
2630 gfc_symtree* gfc_find_symtree_in_proc (const char *, gfc_namespace *);
2631 int gfc_find_symbol (const char *, gfc_namespace *, int, gfc_symbol **);
2632 int gfc_find_sym_tree (const char *, gfc_namespace *, int, gfc_symtree **);
2633 int gfc_get_symbol (const char *, gfc_namespace *, gfc_symbol **);
2634 gfc_try gfc_verify_c_interop (gfc_typespec *);
2635 gfc_try gfc_verify_c_interop_param (gfc_symbol *);
2636 gfc_try verify_bind_c_sym (gfc_symbol *, gfc_typespec *, int, gfc_common_head *);
2637 gfc_try verify_bind_c_derived_type (gfc_symbol *);
2638 gfc_try verify_com_block_vars_c_interop (gfc_common_head *);
2639 void generate_isocbinding_symbol (const char *, iso_c_binding_symbol, const char *);
2640 gfc_symbol *get_iso_c_sym (gfc_symbol *, char *, const char *, int);
2641 int gfc_get_sym_tree (const char *, gfc_namespace *, gfc_symtree **, bool);
2642 int gfc_get_ha_symbol (const char *, gfc_symbol **);
2643 int gfc_get_ha_sym_tree (const char *, gfc_symtree **);
2645 void gfc_new_undo_checkpoint (gfc_undo_change_set &);
2646 void gfc_drop_last_undo_checkpoint (void);
2647 void gfc_restore_last_undo_checkpoint (void);
2648 void gfc_undo_symbols (void);
2649 void gfc_commit_symbols (void);
2650 void gfc_commit_symbol (gfc_symbol *);
2651 gfc_charlen *gfc_new_charlen (gfc_namespace *, gfc_charlen *);
2652 void gfc_free_charlen (gfc_charlen *, gfc_charlen *);
2653 void gfc_free_namespace (gfc_namespace *);
2655 void gfc_symbol_init_2 (void);
2656 void gfc_symbol_done_2 (void);
2658 void gfc_traverse_symtree (gfc_symtree *, void (*)(gfc_symtree *));
2659 void gfc_traverse_ns (gfc_namespace *, void (*)(gfc_symbol *));
2660 void gfc_traverse_user_op (gfc_namespace *, void (*)(gfc_user_op *));
2661 void gfc_save_all (gfc_namespace *);
2663 void gfc_enforce_clean_symbol_state (void);
2664 void gfc_free_dt_list (void);
2667 gfc_gsymbol *gfc_get_gsymbol (const char *);
2668 gfc_gsymbol *gfc_find_gsymbol (gfc_gsymbol *, const char *);
2670 gfc_typebound_proc* gfc_get_typebound_proc (gfc_typebound_proc*);
2671 gfc_symbol* gfc_get_derived_super_type (gfc_symbol*);
2672 gfc_symbol* gfc_get_ultimate_derived_super_type (gfc_symbol*);
2673 bool gfc_type_is_extension_of (gfc_symbol *, gfc_symbol *);
2674 bool gfc_type_compatible (gfc_typespec *, gfc_typespec *);
2676 void gfc_copy_formal_args_intr (gfc_symbol *, gfc_intrinsic_sym *);
2678 void gfc_free_finalizer (gfc_finalizer *el); /* Needed in resolve.c, too */
2680 gfc_try gfc_check_symbol_typed (gfc_symbol*, gfc_namespace*, bool, locus);
2681 gfc_namespace* gfc_find_proc_namespace (gfc_namespace*);
2683 bool gfc_is_associate_pointer (gfc_symbol*);
2684 gfc_symbol * gfc_find_dt_in_generic (gfc_symbol *);
2685 gfc_formal_arglist *gfc_sym_get_dummy_args (gfc_symbol *);
2687 /* intrinsic.c -- true if working in an init-expr, false otherwise. */
2688 extern bool gfc_init_expr_flag;
2690 /* Given a symbol that we have decided is intrinsic, mark it as such
2691 by placing it into a special module that is otherwise impossible to
2694 #define gfc_intrinsic_symbol(SYM) SYM->module = gfc_get_string ("(intrinsic)")
2696 void gfc_intrinsic_init_1 (void);
2697 void gfc_intrinsic_done_1 (void);
2699 char gfc_type_letter (bt);
2700 gfc_symbol * gfc_get_intrinsic_sub_symbol (const char *);
2701 gfc_try gfc_convert_type (gfc_expr *, gfc_typespec *, int);
2702 gfc_try gfc_convert_type_warn (gfc_expr *, gfc_typespec *, int, int);
2703 gfc_try gfc_convert_chartype (gfc_expr *, gfc_typespec *);
2704 int gfc_generic_intrinsic (const char *);
2705 int gfc_specific_intrinsic (const char *);
2706 bool gfc_is_intrinsic (gfc_symbol*, int, locus);
2707 int gfc_intrinsic_actual_ok (const char *, const bool);
2708 gfc_intrinsic_sym *gfc_find_function (const char *);
2709 gfc_intrinsic_sym *gfc_find_subroutine (const char *);
2710 gfc_intrinsic_sym *gfc_intrinsic_function_by_id (gfc_isym_id);
2712 match gfc_intrinsic_func_interface (gfc_expr *, int);
2713 match gfc_intrinsic_sub_interface (gfc_code *, int);
2715 void gfc_warn_intrinsic_shadow (const gfc_symbol*, bool, bool);
2716 gfc_try gfc_check_intrinsic_standard (const gfc_intrinsic_sym*, const char**,
2719 /* match.c -- FIXME */
2720 void gfc_free_iterator (gfc_iterator *, int);
2721 void gfc_free_forall_iterator (gfc_forall_iterator *);
2722 void gfc_free_alloc_list (gfc_alloc *);
2723 void gfc_free_namelist (gfc_namelist *);
2724 void gfc_free_equiv (gfc_equiv *);
2725 void gfc_free_equiv_until (gfc_equiv *, gfc_equiv *);
2726 void gfc_free_data (gfc_data *);
2727 void gfc_free_case_list (gfc_case *);
2729 /* matchexp.c -- FIXME too? */
2730 gfc_expr *gfc_get_parentheses (gfc_expr *);
2733 struct gfc_omp_saved_state { void *ptrs[2]; int ints[1]; };
2734 void gfc_free_omp_clauses (gfc_omp_clauses *);
2735 void gfc_resolve_omp_directive (gfc_code *, gfc_namespace *);
2736 void gfc_resolve_do_iterator (gfc_code *, gfc_symbol *);
2737 void gfc_resolve_omp_parallel_blocks (gfc_code *, gfc_namespace *);
2738 void gfc_resolve_omp_do_blocks (gfc_code *, gfc_namespace *);
2739 void gfc_omp_save_and_clear_state (struct gfc_omp_saved_state *);
2740 void gfc_omp_restore_state (struct gfc_omp_saved_state *);
2743 void gfc_free_actual_arglist (gfc_actual_arglist *);
2744 gfc_actual_arglist *gfc_copy_actual_arglist (gfc_actual_arglist *);
2745 const char *gfc_extract_int (gfc_expr *, int *);
2746 bool is_subref_array (gfc_expr *);
2747 bool gfc_is_simply_contiguous (gfc_expr *, bool);
2748 gfc_try gfc_check_init_expr (gfc_expr *);
2750 gfc_expr *gfc_build_conversion (gfc_expr *);
2751 void gfc_free_ref_list (gfc_ref *);
2752 void gfc_type_convert_binary (gfc_expr *, int);
2753 int gfc_is_constant_expr (gfc_expr *);
2754 gfc_try gfc_simplify_expr (gfc_expr *, int);
2755 int gfc_has_vector_index (gfc_expr *);
2757 gfc_expr *gfc_get_expr (void);
2758 gfc_expr *gfc_get_array_expr (bt type, int kind, locus *);
2759 gfc_expr *gfc_get_null_expr (locus *);
2760 gfc_expr *gfc_get_operator_expr (locus *, gfc_intrinsic_op,gfc_expr *, gfc_expr *);
2761 gfc_expr *gfc_get_structure_constructor_expr (bt, int, locus *);
2762 gfc_expr *gfc_get_constant_expr (bt, int, locus *);
2763 gfc_expr *gfc_get_character_expr (int, locus *, const char *, int len);
2764 gfc_expr *gfc_get_int_expr (int, locus *, int);
2765 gfc_expr *gfc_get_logical_expr (int, locus *, bool);
2766 gfc_expr *gfc_get_iokind_expr (locus *, io_kind);
2768 void gfc_clear_shape (mpz_t *shape, int rank);
2769 void gfc_free_shape (mpz_t **shape, int rank);
2770 void gfc_free_expr (gfc_expr *);
2771 void gfc_replace_expr (gfc_expr *, gfc_expr *);
2772 mpz_t *gfc_copy_shape (mpz_t *, int);
2773 mpz_t *gfc_copy_shape_excluding (mpz_t *, int, gfc_expr *);
2774 gfc_expr *gfc_copy_expr (gfc_expr *);
2775 gfc_ref* gfc_copy_ref (gfc_ref*);
2777 gfc_try gfc_specification_expr (gfc_expr *);
2779 int gfc_numeric_ts (gfc_typespec *);
2780 int gfc_kind_max (gfc_expr *, gfc_expr *);
2782 gfc_try gfc_check_conformance (gfc_expr *, gfc_expr *, const char *, ...) ATTRIBUTE_PRINTF_3;
2783 gfc_try gfc_check_assign (gfc_expr *, gfc_expr *, int);
2784 gfc_try gfc_check_pointer_assign (gfc_expr *, gfc_expr *);
2785 gfc_try gfc_check_assign_symbol (gfc_symbol *, gfc_component *, gfc_expr *);
2787 bool gfc_has_default_initializer (gfc_symbol *);
2788 gfc_expr *gfc_default_initializer (gfc_typespec *);
2789 gfc_expr *gfc_get_variable_expr (gfc_symtree *);
2790 void gfc_add_full_array_ref (gfc_expr *, gfc_array_spec *);
2791 gfc_expr * gfc_lval_expr_from_sym (gfc_symbol *);
2793 gfc_array_spec *gfc_get_full_arrayspec_from_expr (gfc_expr *expr);
2795 bool gfc_traverse_expr (gfc_expr *, gfc_symbol *,
2796 bool (*)(gfc_expr *, gfc_symbol *, int*),
2798 void gfc_expr_set_symbols_referenced (gfc_expr *);
2799 gfc_try gfc_expr_check_typed (gfc_expr*, gfc_namespace*, bool);
2801 gfc_component * gfc_get_proc_ptr_comp (gfc_expr *);
2802 bool gfc_is_proc_ptr_comp (gfc_expr *);
2804 bool gfc_ref_this_image (gfc_ref *ref);
2805 bool gfc_is_coindexed (gfc_expr *);
2806 bool gfc_is_coarray (gfc_expr *);
2807 int gfc_get_corank (gfc_expr *);
2808 bool gfc_has_ultimate_allocatable (gfc_expr *);
2809 bool gfc_has_ultimate_pointer (gfc_expr *);
2811 gfc_expr* gfc_build_intrinsic_call (gfc_namespace *, gfc_isym_id, const char*,
2812 locus, unsigned, ...);
2813 gfc_try gfc_check_vardef_context (gfc_expr*, bool, bool, bool, const char*);
2817 extern gfc_code new_st;
2819 void gfc_clear_new_st (void);
2820 gfc_code *gfc_get_code (void);
2821 gfc_code *gfc_append_code (gfc_code *, gfc_code *);
2822 void gfc_free_statement (gfc_code *);
2823 void gfc_free_statements (gfc_code *);
2824 void gfc_free_association_list (gfc_association_list *);
2827 gfc_try gfc_resolve_expr (gfc_expr *);
2828 void gfc_resolve (gfc_namespace *);
2829 void gfc_resolve_blocks (gfc_code *, gfc_namespace *);
2830 int gfc_impure_variable (gfc_symbol *);
2831 int gfc_pure (gfc_symbol *);
2832 int gfc_implicit_pure (gfc_symbol *);
2833 int gfc_elemental (gfc_symbol *);
2834 gfc_try gfc_resolve_iterator (gfc_iterator *, bool, bool);
2835 gfc_try find_forall_index (gfc_expr *, gfc_symbol *, int);
2836 gfc_try gfc_resolve_index (gfc_expr *, int);
2837 gfc_try gfc_resolve_dim_arg (gfc_expr *);
2838 int gfc_is_formal_arg (void);
2839 void gfc_resolve_substring_charlen (gfc_expr *);
2840 match gfc_iso_c_sub_interface(gfc_code *, gfc_symbol *);
2841 gfc_expr *gfc_expr_to_initialize (gfc_expr *);
2842 bool gfc_type_is_extensible (gfc_symbol *);
2843 gfc_try gfc_resolve_intrinsic (gfc_symbol *, locus *);
2847 gfc_iterator *gfc_copy_iterator (gfc_iterator *);
2849 void gfc_free_array_spec (gfc_array_spec *);
2850 gfc_array_ref *gfc_copy_array_ref (gfc_array_ref *);
2852 gfc_try gfc_set_array_spec (gfc_symbol *, gfc_array_spec *, locus *);
2853 gfc_array_spec *gfc_copy_array_spec (gfc_array_spec *);
2854 gfc_try gfc_resolve_array_spec (gfc_array_spec *, int);
2856 int gfc_compare_array_spec (gfc_array_spec *, gfc_array_spec *);
2858 void gfc_simplify_iterator_var (gfc_expr *);
2859 gfc_try gfc_expand_constructor (gfc_expr *, bool);
2860 int gfc_constant_ac (gfc_expr *);
2861 int gfc_expanded_ac (gfc_expr *);
2862 gfc_try gfc_resolve_character_array_constructor (gfc_expr *);
2863 gfc_try gfc_resolve_array_constructor (gfc_expr *);
2864 gfc_try gfc_check_constructor_type (gfc_expr *);
2865 gfc_try gfc_check_iter_variable (gfc_expr *);
2866 gfc_try gfc_check_constructor (gfc_expr *, gfc_try (*)(gfc_expr *));
2867 gfc_try gfc_array_size (gfc_expr *, mpz_t *);
2868 gfc_try gfc_array_dimen_size (gfc_expr *, int, mpz_t *);
2869 gfc_try gfc_array_ref_shape (gfc_array_ref *, mpz_t *);
2870 gfc_array_ref *gfc_find_array_ref (gfc_expr *);
2871 tree gfc_conv_array_initializer (tree type, gfc_expr *);
2872 gfc_try spec_size (gfc_array_spec *, mpz_t *);
2873 gfc_try spec_dimen_size (gfc_array_spec *, int, mpz_t *);
2874 int gfc_is_compile_time_shape (gfc_array_spec *);
2876 gfc_try gfc_ref_dimen_size (gfc_array_ref *, int dimen, mpz_t *, mpz_t *);
2879 /* interface.c -- FIXME: some of these should be in symbol.c */
2880 void gfc_free_interface (gfc_interface *);
2881 int gfc_compare_derived_types (gfc_symbol *, gfc_symbol *);
2882 int gfc_compare_types (gfc_typespec *, gfc_typespec *);
2883 int gfc_compare_interfaces (gfc_symbol*, gfc_symbol*, const char *, int, int,
2884 char *, int, const char *, const char *);
2885 void gfc_check_interfaces (gfc_namespace *);
2886 gfc_try gfc_procedure_use (gfc_symbol *, gfc_actual_arglist **, locus *);
2887 void gfc_ppc_use (gfc_component *, gfc_actual_arglist **, locus *);
2888 gfc_symbol *gfc_search_interface (gfc_interface *, int,
2889 gfc_actual_arglist **);
2890 match gfc_extend_expr (gfc_expr *);
2891 void gfc_free_formal_arglist (gfc_formal_arglist *);
2892 gfc_try gfc_extend_assign (gfc_code *, gfc_namespace *);
2893 gfc_try gfc_check_new_interface (gfc_interface *, gfc_symbol *, locus);
2894 gfc_try gfc_add_interface (gfc_symbol *);
2895 gfc_interface *gfc_current_interface_head (void);
2896 void gfc_set_current_interface_head (gfc_interface *);
2897 gfc_symtree* gfc_find_sym_in_symtree (gfc_symbol*);
2898 bool gfc_arglist_matches_symbol (gfc_actual_arglist**, gfc_symbol*);
2899 bool gfc_check_operator_interface (gfc_symbol*, gfc_intrinsic_op, locus);
2900 int gfc_has_vector_subscript (gfc_expr*);
2901 gfc_intrinsic_op gfc_equivalent_op (gfc_intrinsic_op);
2902 gfc_try gfc_check_typebound_override (gfc_symtree*, gfc_symtree*);
2905 extern gfc_st_label format_asterisk;
2907 void gfc_free_open (gfc_open *);
2908 gfc_try gfc_resolve_open (gfc_open *);
2909 void gfc_free_close (gfc_close *);
2910 gfc_try gfc_resolve_close (gfc_close *);
2911 void gfc_free_filepos (gfc_filepos *);
2912 gfc_try gfc_resolve_filepos (gfc_filepos *);
2913 void gfc_free_inquire (gfc_inquire *);
2914 gfc_try gfc_resolve_inquire (gfc_inquire *);
2915 void gfc_free_dt (gfc_dt *);
2916 gfc_try gfc_resolve_dt (gfc_dt *, locus *);
2917 void gfc_free_wait (gfc_wait *);
2918 gfc_try gfc_resolve_wait (gfc_wait *);
2921 void gfc_module_init_2 (void);
2922 void gfc_module_done_2 (void);
2923 void gfc_dump_module (const char *, int);
2924 bool gfc_check_symbol_access (gfc_symbol *);
2925 void gfc_free_use_stmts (gfc_use_list *);
2928 symbol_attribute gfc_variable_attr (gfc_expr *, gfc_typespec *);
2929 symbol_attribute gfc_expr_attr (gfc_expr *);
2930 match gfc_match_rvalue (gfc_expr **);
2931 match gfc_match_varspec (gfc_expr*, int, bool, bool);
2932 int gfc_check_digit (char, int);
2933 bool gfc_is_function_return_value (gfc_symbol *, gfc_namespace *);
2934 gfc_try gfc_convert_to_structure_constructor (gfc_expr *, gfc_symbol *,
2936 gfc_actual_arglist **, bool);
2939 void gfc_generate_code (gfc_namespace *);
2940 void gfc_generate_module_code (gfc_namespace *);
2941 void gfc_init_coarray_decl (bool);
2943 /* trans-intrinsic.c */
2944 bool gfc_inline_intrinsic_function_p (gfc_expr *);
2947 typedef int (*compare_fn) (void *, void *);
2948 void gfc_insert_bbt (void *, void *, compare_fn);
2949 void gfc_delete_bbt (void *, void *, compare_fn);
2951 /* dump-parse-tree.c */
2952 void gfc_dump_parse_tree (gfc_namespace *, FILE *);
2955 gfc_try gfc_parse_file (void);
2956 void gfc_global_used (gfc_gsymbol *, locus *);
2957 gfc_namespace* gfc_build_block_ns (gfc_namespace *);
2960 int gfc_dep_compare_functions (gfc_expr *, gfc_expr *, bool);
2961 int gfc_dep_compare_expr (gfc_expr *, gfc_expr *);
2964 gfc_try gfc_check_same_strlen (const gfc_expr*, const gfc_expr*, const char*);
2965 gfc_try gfc_calculate_transfer_sizes (gfc_expr*, gfc_expr*, gfc_expr*,
2966 size_t*, size_t*, size_t*);
2969 void gfc_fix_class_refs (gfc_expr *e);
2970 void gfc_add_component_ref (gfc_expr *, const char *);
2971 void gfc_add_class_array_ref (gfc_expr *);
2972 #define gfc_add_data_component(e) gfc_add_component_ref(e,"_data")
2973 #define gfc_add_vptr_component(e) gfc_add_component_ref(e,"_vptr")
2974 #define gfc_add_hash_component(e) gfc_add_component_ref(e,"_hash")
2975 #define gfc_add_size_component(e) gfc_add_component_ref(e,"_size")
2976 #define gfc_add_def_init_component(e) gfc_add_component_ref(e,"_def_init")
2977 #define gfc_add_final_component(e) gfc_add_component_ref(e,"_final")
2978 bool gfc_is_class_array_ref (gfc_expr *, bool *);
2979 bool gfc_is_class_scalar_expr (gfc_expr *);
2980 bool gfc_is_class_container_ref (gfc_expr *e);
2981 gfc_expr *gfc_class_null_initializer (gfc_typespec *, gfc_expr *);
2982 unsigned int gfc_hash_value (gfc_symbol *);
2983 gfc_try gfc_build_class_symbol (gfc_typespec *, symbol_attribute *,
2984 gfc_array_spec **, bool);
2985 gfc_symbol *gfc_find_derived_vtab (gfc_symbol *);
2986 gfc_symbol *gfc_find_intrinsic_vtab (gfc_typespec *);
2987 gfc_symtree* gfc_find_typebound_proc (gfc_symbol*, gfc_try*,
2988 const char*, bool, locus*);
2989 gfc_symtree* gfc_find_typebound_user_op (gfc_symbol*, gfc_try*,
2990 const char*, bool, locus*);
2991 gfc_typebound_proc* gfc_find_typebound_intrinsic_op (gfc_symbol*, gfc_try*,
2992 gfc_intrinsic_op, bool,
2994 gfc_symtree* gfc_get_tbp_symtree (gfc_symtree**, const char*);
2995 bool gfc_is_finalizable (gfc_symbol *, gfc_expr **);
2997 #define CLASS_DATA(sym) sym->ts.u.derived->components
2998 #define UNLIMITED_POLY(sym) \
2999 (sym != NULL && sym->ts.type == BT_CLASS \
3000 && CLASS_DATA (sym) \
3001 && CLASS_DATA (sym)->ts.u.derived \
3002 && CLASS_DATA (sym)->ts.u.derived->attr.unlimited_polymorphic)
3004 /* frontend-passes.c */
3006 void gfc_run_passes (gfc_namespace *);
3008 typedef int (*walk_code_fn_t) (gfc_code **, int *, void *);
3009 typedef int (*walk_expr_fn_t) (gfc_expr **, int *, void *);
3011 int gfc_expr_walker (gfc_expr **, walk_expr_fn_t, void *);
3012 int gfc_code_walker (gfc_code **, walk_code_fn_t, walk_expr_fn_t, void *);
3014 #endif /* GCC_GFORTRAN_H */