1 /* Helper routines for C++ support in GDB.
2 Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
3 Free Software Foundation, Inc.
5 Contributed by MontaVista Software.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "cp-support.h"
24 #include "gdb_string.h"
26 #include "gdb_assert.h"
28 #include "dictionary.h"
33 #include "complaints.h"
35 #include "exceptions.h"
36 #include "expression.h"
39 #include "safe-ctype.h"
43 #define d_left(dc) (dc)->u.s_binary.left
44 #define d_right(dc) (dc)->u.s_binary.right
46 /* Functions related to demangled name parsing. */
48 static unsigned int cp_find_first_component_aux (const char *name,
51 static void demangled_name_complaint (const char *name);
53 /* Functions/variables related to overload resolution. */
55 static int sym_return_val_size;
56 static int sym_return_val_index;
57 static struct symbol **sym_return_val;
59 static void overload_list_add_symbol (struct symbol *sym,
60 const char *oload_name);
62 static void make_symbol_overload_list_using (const char *func_name,
63 const char *namespace);
65 static void make_symbol_overload_list_qualified (const char *func_name);
67 /* The list of "maint cplus" commands. */
69 struct cmd_list_element *maint_cplus_cmd_list = NULL;
71 /* The actual commands. */
73 static void maint_cplus_command (char *arg, int from_tty);
74 static void first_component_command (char *arg, int from_tty);
76 /* Operator validation.
77 NOTE: Multi-byte operators (usually the assignment variety operator)
78 must appear before the single byte version, i.e., "+=" before "+". */
79 static const char *operator_tokens[] =
81 "++", "+=", "+", "->*", "->", "--", "-=", "-", "*=", "*", "/=", "/",
82 "%=", "%", "!=", "==", "!", "&&", "<<=", "<<", ">>=", ">>",
83 "<=", "<", ">=", ">", "~", "&=", "&", "|=", "||", "|", "^=", "^",
84 "=", "()", "[]", ",", "new", "delete"
85 /* new[] and delete[] require special whitespace handling */
88 /* Return 1 if STRING is clearly already in canonical form. This
89 function is conservative; things which it does not recognize are
90 assumed to be non-canonical, and the parser will sort them out
91 afterwards. This speeds up the critical path for alphanumeric
95 cp_already_canonical (const char *string)
97 /* Identifier start character [a-zA-Z_]. */
98 if (!ISIDST (string[0]))
101 /* These are the only two identifiers which canonicalize to other
102 than themselves or an error: unsigned -> unsigned int and
104 if (string[0] == 'u' && strcmp (&string[1], "nsigned") == 0)
106 else if (string[0] == 's' && strcmp (&string[1], "igned") == 0)
109 /* Identifier character [a-zA-Z0-9_]. */
110 while (ISIDNUM (string[1]))
113 if (string[1] == '\0')
119 /* Parse STRING and convert it to canonical form. If parsing fails,
120 or if STRING is already canonical, return NULL. Otherwise return
121 the canonical form. The return value is allocated via xmalloc. */
124 cp_canonicalize_string (const char *string)
126 struct demangle_component *ret_comp;
127 unsigned int estimated_len;
130 if (cp_already_canonical (string))
133 ret_comp = cp_demangled_name_to_comp (string, NULL);
134 if (ret_comp == NULL)
137 estimated_len = strlen (string) * 2;
138 ret = cp_comp_to_string (ret_comp, estimated_len);
140 if (strcmp (string, ret) == 0)
149 /* Convert a mangled name to a demangle_component tree. *MEMORY is set to the
150 block of used memory that should be freed when finished with the tree.
151 DEMANGLED_P is set to the char * that should be freed when finished with
152 the tree, or NULL if none was needed. OPTIONS will be passed to the
155 static struct demangle_component *
156 mangled_name_to_comp (const char *mangled_name, int options,
157 void **memory, char **demangled_p)
159 struct demangle_component *ret;
160 char *demangled_name;
163 /* If it looks like a v3 mangled name, then try to go directly
165 if (mangled_name[0] == '_' && mangled_name[1] == 'Z')
167 ret = cplus_demangle_v3_components (mangled_name, options, memory);
175 /* If it doesn't, or if that failed, then try to demangle the name. */
176 demangled_name = cplus_demangle (mangled_name, options);
177 if (demangled_name == NULL)
180 /* If we could demangle the name, parse it to build the component tree. */
181 ret = cp_demangled_name_to_comp (demangled_name, NULL);
185 xfree (demangled_name);
189 *demangled_p = demangled_name;
193 /* Return the name of the class containing method PHYSNAME. */
196 cp_class_name_from_physname (const char *physname)
198 void *storage = NULL;
199 char *demangled_name = NULL, *ret;
200 struct demangle_component *ret_comp, *prev_comp, *cur_comp;
203 ret_comp = mangled_name_to_comp (physname, DMGL_ANSI, &storage,
205 if (ret_comp == NULL)
210 /* First strip off any qualifiers, if we have a function or method. */
212 switch (ret_comp->type)
214 case DEMANGLE_COMPONENT_CONST:
215 case DEMANGLE_COMPONENT_RESTRICT:
216 case DEMANGLE_COMPONENT_VOLATILE:
217 case DEMANGLE_COMPONENT_CONST_THIS:
218 case DEMANGLE_COMPONENT_RESTRICT_THIS:
219 case DEMANGLE_COMPONENT_VOLATILE_THIS:
220 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
221 ret_comp = d_left (ret_comp);
228 /* If what we have now is a function, discard the argument list. */
229 if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME)
230 ret_comp = d_left (ret_comp);
232 /* If what we have now is a template, strip off the template
233 arguments. The left subtree may be a qualified name. */
234 if (ret_comp->type == DEMANGLE_COMPONENT_TEMPLATE)
235 ret_comp = d_left (ret_comp);
237 /* What we have now should be a name, possibly qualified. Additional
238 qualifiers could live in the left subtree or the right subtree. Find
244 switch (cur_comp->type)
246 case DEMANGLE_COMPONENT_QUAL_NAME:
247 case DEMANGLE_COMPONENT_LOCAL_NAME:
248 prev_comp = cur_comp;
249 cur_comp = d_right (cur_comp);
251 case DEMANGLE_COMPONENT_TEMPLATE:
252 case DEMANGLE_COMPONENT_NAME:
253 case DEMANGLE_COMPONENT_CTOR:
254 case DEMANGLE_COMPONENT_DTOR:
255 case DEMANGLE_COMPONENT_OPERATOR:
256 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
266 if (cur_comp != NULL && prev_comp != NULL)
268 /* We want to discard the rightmost child of PREV_COMP. */
269 *prev_comp = *d_left (prev_comp);
270 /* The ten is completely arbitrary; we don't have a good estimate. */
271 ret = cp_comp_to_string (ret_comp, 10);
276 xfree (demangled_name);
280 /* Return the child of COMP which is the basename of a method, variable,
281 et cetera. All scope qualifiers are discarded, but template arguments
282 will be included. The component tree may be modified. */
284 static struct demangle_component *
285 unqualified_name_from_comp (struct demangle_component *comp)
287 struct demangle_component *ret_comp = comp, *last_template;
291 last_template = NULL;
293 switch (ret_comp->type)
295 case DEMANGLE_COMPONENT_QUAL_NAME:
296 case DEMANGLE_COMPONENT_LOCAL_NAME:
297 ret_comp = d_right (ret_comp);
299 case DEMANGLE_COMPONENT_TYPED_NAME:
300 ret_comp = d_left (ret_comp);
302 case DEMANGLE_COMPONENT_TEMPLATE:
303 gdb_assert (last_template == NULL);
304 last_template = ret_comp;
305 ret_comp = d_left (ret_comp);
307 case DEMANGLE_COMPONENT_CONST:
308 case DEMANGLE_COMPONENT_RESTRICT:
309 case DEMANGLE_COMPONENT_VOLATILE:
310 case DEMANGLE_COMPONENT_CONST_THIS:
311 case DEMANGLE_COMPONENT_RESTRICT_THIS:
312 case DEMANGLE_COMPONENT_VOLATILE_THIS:
313 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
314 ret_comp = d_left (ret_comp);
316 case DEMANGLE_COMPONENT_NAME:
317 case DEMANGLE_COMPONENT_CTOR:
318 case DEMANGLE_COMPONENT_DTOR:
319 case DEMANGLE_COMPONENT_OPERATOR:
320 case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
330 d_left (last_template) = ret_comp;
331 return last_template;
337 /* Return the name of the method whose linkage name is PHYSNAME. */
340 method_name_from_physname (const char *physname)
342 void *storage = NULL;
343 char *demangled_name = NULL, *ret;
344 struct demangle_component *ret_comp;
347 ret_comp = mangled_name_to_comp (physname, DMGL_ANSI, &storage,
349 if (ret_comp == NULL)
352 ret_comp = unqualified_name_from_comp (ret_comp);
355 if (ret_comp != NULL)
356 /* The ten is completely arbitrary; we don't have a good estimate. */
357 ret = cp_comp_to_string (ret_comp, 10);
361 xfree (demangled_name);
365 /* If FULL_NAME is the demangled name of a C++ function (including an
366 arg list, possibly including namespace/class qualifications),
367 return a new string containing only the function name (without the
368 arg list/class qualifications). Otherwise, return NULL. The
369 caller is responsible for freeing the memory in question. */
372 cp_func_name (const char *full_name)
375 struct demangle_component *ret_comp;
378 ret_comp = cp_demangled_name_to_comp (full_name, NULL);
382 ret_comp = unqualified_name_from_comp (ret_comp);
385 if (ret_comp != NULL)
386 ret = cp_comp_to_string (ret_comp, 10);
391 /* DEMANGLED_NAME is the name of a function, including parameters and
392 (optionally) a return type. Return the name of the function without
393 parameters or return type, or NULL if we can not parse the name. */
396 cp_remove_params (const char *demangled_name)
399 struct demangle_component *ret_comp;
402 if (demangled_name == NULL)
405 ret_comp = cp_demangled_name_to_comp (demangled_name, NULL);
406 if (ret_comp == NULL)
409 /* First strip off any qualifiers, if we have a function or method. */
411 switch (ret_comp->type)
413 case DEMANGLE_COMPONENT_CONST:
414 case DEMANGLE_COMPONENT_RESTRICT:
415 case DEMANGLE_COMPONENT_VOLATILE:
416 case DEMANGLE_COMPONENT_CONST_THIS:
417 case DEMANGLE_COMPONENT_RESTRICT_THIS:
418 case DEMANGLE_COMPONENT_VOLATILE_THIS:
419 case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
420 ret_comp = d_left (ret_comp);
427 /* What we have now should be a function. Return its name. */
428 if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME)
429 ret = cp_comp_to_string (d_left (ret_comp), 10);
434 /* Here are some random pieces of trivia to keep in mind while trying
435 to take apart demangled names:
437 - Names can contain function arguments or templates, so the process
438 has to be, to some extent recursive: maybe keep track of your
439 depth based on encountering <> and ().
441 - Parentheses don't just have to happen at the end of a name: they
442 can occur even if the name in question isn't a function, because
443 a template argument might be a type that's a function.
445 - Conversely, even if you're trying to deal with a function, its
446 demangled name might not end with ')': it could be a const or
447 volatile class method, in which case it ends with "const" or
450 - Parentheses are also used in anonymous namespaces: a variable
451 'foo' in an anonymous namespace gets demangled as "(anonymous
454 - And operator names can contain parentheses or angle brackets. */
456 /* FIXME: carlton/2003-03-13: We have several functions here with
457 overlapping functionality; can we combine them? Also, do they
458 handle all the above considerations correctly? */
461 /* This returns the length of first component of NAME, which should be
462 the demangled name of a C++ variable/function/method/etc.
463 Specifically, it returns the index of the first colon forming the
464 boundary of the first component: so, given 'A::foo' or 'A::B::foo'
465 it returns the 1, and given 'foo', it returns 0. */
467 /* The character in NAME indexed by the return value is guaranteed to
468 always be either ':' or '\0'. */
470 /* NOTE: carlton/2003-03-13: This function is currently only intended
471 for internal use: it's probably not entirely safe when called on
472 user-generated input, because some of the 'index += 2' lines in
473 cp_find_first_component_aux might go past the end of malformed
477 cp_find_first_component (const char *name)
479 return cp_find_first_component_aux (name, 0);
482 /* Helper function for cp_find_first_component. Like that function,
483 it returns the length of the first component of NAME, but to make
484 the recursion easier, it also stops if it reaches an unexpected ')'
485 or '>' if the value of PERMISSIVE is nonzero. */
487 /* Let's optimize away calls to strlen("operator"). */
489 #define LENGTH_OF_OPERATOR 8
492 cp_find_first_component_aux (const char *name, int permissive)
494 unsigned int index = 0;
495 /* Operator names can show up in unexpected places. Since these can
496 contain parentheses or angle brackets, they can screw up the
497 recursion. But not every string 'operator' is part of an
498 operater name: e.g. you could have a variable 'cooperator'. So
499 this variable tells us whether or not we should treat the string
500 'operator' as starting an operator. */
501 int operator_possible = 1;
508 /* Template; eat it up. The calls to cp_first_component
509 should only return (I hope!) when they reach the '>'
510 terminating the component or a '::' between two
511 components. (Hence the '+ 2'.) */
513 for (index += cp_find_first_component_aux (name + index, 1);
515 index += cp_find_first_component_aux (name + index, 1))
517 if (name[index] != ':')
519 demangled_name_complaint (name);
520 return strlen (name);
524 operator_possible = 1;
527 /* Similar comment as to '<'. */
529 for (index += cp_find_first_component_aux (name + index, 1);
531 index += cp_find_first_component_aux (name + index, 1))
533 if (name[index] != ':')
535 demangled_name_complaint (name);
536 return strlen (name);
540 operator_possible = 1;
548 demangled_name_complaint (name);
549 return strlen (name);
555 /* Operator names can screw up the recursion. */
556 if (operator_possible
557 && strncmp (name + index, "operator", LENGTH_OF_OPERATOR) == 0)
559 index += LENGTH_OF_OPERATOR;
560 while (ISSPACE(name[index]))
564 /* Skip over one less than the appropriate number of
565 characters: the for loop will skip over the last
568 if (name[index + 1] == '<')
575 if (name[index + 1] == '>')
588 operator_possible = 0;
595 /* NOTE: carlton/2003-04-18: I'm not sure what the precise
596 set of relevant characters are here: it's necessary to
597 include any character that can show up before 'operator'
598 in a demangled name, and it's safe to include any
599 character that can't be part of an identifier's name. */
600 operator_possible = 1;
603 operator_possible = 0;
609 /* Complain about a demangled name that we don't know how to parse.
610 NAME is the demangled name in question. */
613 demangled_name_complaint (const char *name)
615 complaint (&symfile_complaints,
616 "unexpected demangled name '%s'", name);
619 /* If NAME is the fully-qualified name of a C++
620 function/variable/method/etc., this returns the length of its
621 entire prefix: all of the namespaces and classes that make up its
622 name. Given 'A::foo', it returns 1, given 'A::B::foo', it returns
623 4, given 'foo', it returns 0. */
626 cp_entire_prefix_len (const char *name)
628 unsigned int current_len = cp_find_first_component (name);
629 unsigned int previous_len = 0;
631 while (name[current_len] != '\0')
633 gdb_assert (name[current_len] == ':');
634 previous_len = current_len;
637 current_len += cp_find_first_component (name + current_len);
643 /* Overload resolution functions. */
645 /* Test to see if SYM is a symbol that we haven't seen corresponding
646 to a function named OLOAD_NAME. If so, add it to the current
650 overload_list_add_symbol (struct symbol *sym, const char *oload_name)
656 /* If there is no type information, we can't do anything, so skip */
657 if (SYMBOL_TYPE (sym) == NULL)
660 /* skip any symbols that we've already considered. */
661 for (i = 0; i < sym_return_val_index; ++i)
662 if (strcmp (SYMBOL_LINKAGE_NAME (sym),
663 SYMBOL_LINKAGE_NAME (sym_return_val[i])) == 0)
666 /* Get the demangled name without parameters */
667 sym_name = cp_remove_params (SYMBOL_NATURAL_NAME (sym));
671 /* skip symbols that cannot match */
672 if (strcmp (sym_name, oload_name) != 0)
680 /* We have a match for an overload instance, so add SYM to the current list
681 * of overload instances */
682 if (sym_return_val_index + 3 > sym_return_val_size)
684 newsize = (sym_return_val_size *= 2) * sizeof (struct symbol *);
685 sym_return_val = (struct symbol **) xrealloc ((char *) sym_return_val, newsize);
687 sym_return_val[sym_return_val_index++] = sym;
688 sym_return_val[sym_return_val_index] = NULL;
691 /* Return a null-terminated list of pointers to function symbols that
692 are named FUNC_NAME and are visible within NAMESPACE. */
695 make_symbol_overload_list (const char *func_name,
696 const char *namespace)
698 struct cleanup *old_cleanups;
700 sym_return_val_size = 100;
701 sym_return_val_index = 0;
702 sym_return_val = xmalloc ((sym_return_val_size + 1) *
703 sizeof (struct symbol *));
704 sym_return_val[0] = NULL;
706 old_cleanups = make_cleanup (xfree, sym_return_val);
708 make_symbol_overload_list_using (func_name, namespace);
710 discard_cleanups (old_cleanups);
712 return sym_return_val;
715 /* This applies the using directives to add namespaces to search in,
716 and then searches for overloads in all of those namespaces. It
717 adds the symbols found to sym_return_val. Arguments are as in
718 make_symbol_overload_list. */
721 make_symbol_overload_list_using (const char *func_name,
722 const char *namespace)
724 const struct using_direct *current;
726 /* First, go through the using directives. If any of them apply,
727 look in the appropriate namespaces for new functions to match
730 for (current = block_using (get_selected_block (0));
732 current = current->next)
734 if (strcmp (namespace, current->import_dest) == 0)
736 make_symbol_overload_list_using (func_name,
737 current->import_src);
741 /* Now, add names for this namespace. */
743 if (namespace[0] == '\0')
745 make_symbol_overload_list_qualified (func_name);
749 char *concatenated_name
750 = alloca (strlen (namespace) + 2 + strlen (func_name) + 1);
751 strcpy (concatenated_name, namespace);
752 strcat (concatenated_name, "::");
753 strcat (concatenated_name, func_name);
754 make_symbol_overload_list_qualified (concatenated_name);
758 /* This does the bulk of the work of finding overloaded symbols.
759 FUNC_NAME is the name of the overloaded function we're looking for
760 (possibly including namespace info). */
763 make_symbol_overload_list_qualified (const char *func_name)
767 struct objfile *objfile;
768 const struct block *b, *surrounding_static_block = 0;
769 struct dict_iterator iter;
770 const struct dictionary *dict;
772 /* Look through the partial symtabs for all symbols which begin
773 by matching FUNC_NAME. Make sure we read that symbol table in. */
775 ALL_OBJFILES (objfile)
778 objfile->sf->qf->expand_symtabs_for_function (objfile, func_name);
781 /* Search upwards from currently selected frame (so that we can
782 complete on local vars. */
784 for (b = get_selected_block (0); b != NULL; b = BLOCK_SUPERBLOCK (b))
786 dict = BLOCK_DICT (b);
788 for (sym = dict_iter_name_first (dict, func_name, &iter);
790 sym = dict_iter_name_next (func_name, &iter))
792 overload_list_add_symbol (sym, func_name);
796 surrounding_static_block = block_static_block (get_selected_block (0));
798 /* Go through the symtabs and check the externs and statics for
799 symbols which match. */
801 ALL_PRIMARY_SYMTABS (objfile, s)
804 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), GLOBAL_BLOCK);
805 dict = BLOCK_DICT (b);
807 for (sym = dict_iter_name_first (dict, func_name, &iter);
809 sym = dict_iter_name_next (func_name, &iter))
811 overload_list_add_symbol (sym, func_name);
815 ALL_PRIMARY_SYMTABS (objfile, s)
818 b = BLOCKVECTOR_BLOCK (BLOCKVECTOR (s), STATIC_BLOCK);
819 /* Don't do this block twice. */
820 if (b == surrounding_static_block)
822 dict = BLOCK_DICT (b);
824 for (sym = dict_iter_name_first (dict, func_name, &iter);
826 sym = dict_iter_name_next (func_name, &iter))
828 overload_list_add_symbol (sym, func_name);
833 /* Lookup the rtti type for a class name. */
836 cp_lookup_rtti_type (const char *name, struct block *block)
838 struct symbol * rtti_sym;
839 struct type * rtti_type;
841 rtti_sym = lookup_symbol (name, block, STRUCT_DOMAIN, NULL);
843 if (rtti_sym == NULL)
845 warning (_("RTTI symbol not found for class '%s'"), name);
849 if (SYMBOL_CLASS (rtti_sym) != LOC_TYPEDEF)
851 warning (_("RTTI symbol for class '%s' is not a type"), name);
855 rtti_type = SYMBOL_TYPE (rtti_sym);
857 switch (TYPE_CODE (rtti_type))
859 case TYPE_CODE_CLASS:
861 case TYPE_CODE_NAMESPACE:
862 /* chastain/2003-11-26: the symbol tables often contain fake
863 symbols for namespaces with the same name as the struct.
864 This warning is an indication of a bug in the lookup order
865 or a bug in the way that the symbol tables are populated. */
866 warning (_("RTTI symbol for class '%s' is a namespace"), name);
869 warning (_("RTTI symbol for class '%s' has bad type"), name);
876 /* Don't allow just "maintenance cplus". */
879 maint_cplus_command (char *arg, int from_tty)
881 printf_unfiltered (_("\"maintenance cplus\" must be followed by the name of a command.\n"));
882 help_list (maint_cplus_cmd_list, "maintenance cplus ", -1, gdb_stdout);
885 /* This is a front end for cp_find_first_component, for unit testing.
886 Be careful when using it: see the NOTE above
887 cp_find_first_component. */
890 first_component_command (char *arg, int from_tty)
898 len = cp_find_first_component (arg);
899 prefix = alloca (len + 1);
901 memcpy (prefix, arg, len);
904 printf_unfiltered ("%s\n", prefix);
907 extern initialize_file_ftype _initialize_cp_support; /* -Wmissing-prototypes */
909 #define SKIP_SPACE(P) \
912 while (*(P) == ' ' || *(P) == '\t') \
917 /* Returns the length of the operator name or 0 if INPUT does not
918 point to a valid C++ operator. INPUT should start with "operator". */
920 cp_validate_operator (const char *input)
925 struct expression *expr;
927 struct gdb_exception except;
928 struct cleanup *old_chain;
932 if (strncmp (p, "operator", 8) == 0)
938 for (i = 0; i < sizeof (operator_tokens) / sizeof (operator_tokens[0]);
941 int length = strlen (operator_tokens[i]);
942 /* By using strncmp here, we MUST have operator_tokens ordered!
943 See additional notes where operator_tokens is defined above. */
944 if (strncmp (p, operator_tokens[i], length) == 0)
950 if (strncmp (op, "new", 3) == 0
951 || strncmp (op, "delete", 6) == 0)
954 /* Special case: new[] and delete[]. We must be careful
955 to swallow whitespace before/in "[]". */
974 /* Check input for a conversion operator. */
976 /* Skip past base typename */
977 while (*p != '*' && *p != '&' && *p != 0 && *p != ' ')
981 /* Add modifiers '*'/'&' */
982 while (*p == '*' || *p == '&')
988 /* Check for valid type. [Remember: input starts with
990 copy = savestring (input + 8, p - input - 8);
993 TRY_CATCH (except, RETURN_MASK_ALL)
995 expr = parse_expression (copy);
996 val = evaluate_type (expr);
1003 if (val != NULL && value_type (val) != NULL)
1011 _initialize_cp_support (void)
1013 add_prefix_cmd ("cplus", class_maintenance, maint_cplus_command,
1014 _("C++ maintenance commands."), &maint_cplus_cmd_list,
1015 "maintenance cplus ", 0, &maintenancelist);
1016 add_alias_cmd ("cp", "cplus", class_maintenance, 1, &maintenancelist);
1018 add_cmd ("first_component", class_maintenance, first_component_command,
1019 _("Print the first class/namespace component of NAME."),
1020 &maint_cplus_cmd_list);