Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* doc/invoke.texi (Warning Options): Describe -Wold-style-definition.
* c-opts.c (c_common_handle_option): Handle OPT_Wold_style_definition.
* c-parse.in: Warn about old-style parameter definition.
* c-common.c: Define warn_old_style_defintion.
* c-common.h: Declare it.
* c.opt: Add Wold-style-defintion.
testsuite:
2003-09-15 Andreas Jaeger <aj@suse.de>
* gcc.dg/Wold-style-definition-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@71400
138bc75d-0d04-0410-961f-
82ee72b054a4
int warn_nonnull;
+/* Warn about old-style parameter declaration. */
+
+int warn_old_style_definition;
+
/* ObjC language option variables. */
extern int warn_nonnull;
+/* Warn about old-style parameter declaration. */
+
+extern int warn_old_style_definition;
+
/* ObjC language option variables. */
warn_nonnull = value;
break;
+ case OPT_Wold_style_definition:
+ warn_old_style_definition = value;
+ break;
+
case OPT_Wold_style_cast:
warn_old_style_cast = value;
break;
if (warn_traditional && !in_system_header
&& parsing_iso_function_signature)
warning ("traditional C rejects ISO C style function definitions");
+ if (warn_old_style_definition && !in_system_header
+ && !parsing_iso_function_signature)
+ warning ("old-style parameter declaration");
parsing_iso_function_signature = false; /* Reset after warning. */
}
| datadecls
+ {
+ if (warn_old_style_definition && !in_system_header)
+ warning ("old-style parameter declaration");
+ }
;
/* The following are analogous to lineno_decl, decls and decl
C++ ObjC++
Warn if a C-style cast is used in a program
+Wold-style-definition
+C ObjC
+Warn if an old-style parameter definition is used
+
Woverloaded-virtual
C++ ObjC++
Warn about overloaded virtual function names
-Wmain -Wmissing-braces @gol
-Wmissing-format-attribute -Wmissing-noreturn @gol
-Wno-multichar -Wno-format-extra-args -Wno-format-y2k @gol
--Wno-import -Wnonnull -Wpacked -Wpadded @gol
+-Wno-import -Wnonnull -Wold-style-definition -Wpacked -Wpadded @gol
-Wparentheses -Wpointer-arith -Wredundant-decls @gol
-Wreturn-type -Wsequence-point -Wshadow @gol
-Wsign-compare -Wstrict-aliasing @gol
a warning if preceded by a declaration which specifies the argument
types.)
+@item -Wold-style-definition @r{(C only)}
+@opindex Wold-style-definition
+Warn if an old-style function definition is used. A warning is given
+even if there is a previous prototype.
+
@item -Wmissing-prototypes @r{(C only)}
@opindex Wmissing-prototypes
Warn if a global function is defined without a previous prototype
+2003-09-15 Andreas Jaeger <aj@suse.de>
+
+ * gcc.dg/Wold-style-definition-1.c: New test.
+
2003-09-14 Mark Mitchell <mark@codesourcery.com>
PR c++/3907
--- /dev/null
+/* Test for warning about old-style function definition. */
+
+/* Origin: Andreas Jaeger <aj@suse.de> */
+/* { dg-do compile } */
+/* { dg-options "-Wold-style-definition" } */
+
+void
+bar (a) int a; { } /* { dg-warning "old-style parameter declaration" } */
+
+void bar1 () {} /* { dg-warning "old-style parameter declaration" } */
+
+extern void bar2 (void);
+
+void bar2 () {} /* { dg-warning "old-style parameter declaration" } */
+
+extern void bar3 (int);
+
+void bar3 (a) {} /* { dg-warning "old-style parameter declaration" } */
+
+void bar4 (a) {} /* { dg-warning "old-style parameter declaration" } */
+
+void bar5 (int a) {}
+
+void bar6 (void) {}