File Wunprototyped-calls.diff of Package cross-spu-gcc-static
Index: gcc/c.opt
===================================================================
*** gcc/c.opt (revision 131759)
--- gcc/c.opt (working copy)
*************** Wunknown-pragmas
*** 457,462 ****
--- 457,466 ----
C ObjC C++ ObjC++ Warning
Warn about unrecognized pragmas
+ Wunprototyped-calls
+ C Var(warn_unprototyped_calls) Warning
+ Warn about calls to unprototyped functions with at least one argument
+
Wunused-macros
C ObjC C++ ObjC++ Warning
Warn about macros defined in the main file that are not used
Index: gcc/testsuite/gcc.dg/cleanup-1.c
===================================================================
*** gcc/testsuite/gcc.dg/cleanup-1.c (revision 131821)
--- gcc/testsuite/gcc.dg/cleanup-1.c (working copy)
***************
*** 6,12 ****
#define C(x) __attribute__((cleanup(x)))
static int f1(void *x U) { return 0; }
! static void f2() { }
static void f3(void) { }
static void f4(void *x U) { }
static void f5(int *x U) { }
--- 6,12 ----
#define C(x) __attribute__((cleanup(x)))
static int f1(void *x U) { return 0; }
! static void f2() { } /* { dg-message "declared here" "" } */
static void f3(void) { }
static void f4(void *x U) { }
static void f5(int *x U) { }
*************** static void f9(int x U) { }
*** 18,24 ****
void test(void)
{
int o1 C(f1);
! int o2 C(f2);
int o3 C(f3); /* { dg-error "too many arguments" } */
int o4 C(f4);
int o5 C(f5);
--- 18,24 ----
void test(void)
{
int o1 C(f1);
! int o2 C(f2); /* { dg-warning "without a real prototype" } */
int o3 C(f3); /* { dg-error "too many arguments" } */
int o4 C(f4);
int o5 C(f5);
Index: gcc/c-typeck.c
===================================================================
*** gcc/c-typeck.c (revision 133807)
--- gcc/c-typeck.c (working copy)
*************** build_function_call (tree function, tree
*** 2444,2449 ****
--- 2444,2461 ----
if (nargs < 0)
return error_mark_node;
+ /* If we cannot check function arguments because a prototype is
+ missing for the callee, warn here. */
+ if (warn_unprototyped_calls
+ && nargs > 0 && !TYPE_ARG_TYPES (fntype)
+ && fundecl && !DECL_BUILT_IN (fundecl) && !C_DECL_IMPLICIT (fundecl)
+ && !DECL_ARGUMENTS (fundecl))
+ {
+ warning (OPT_Wunprototyped_calls,
+ "call to function %qD without a real prototype", fundecl);
+ inform (DECL_SOURCE_LOCATION (fundecl), "%qD was declared here", fundecl);
+ }
+
/* Check that the arguments to the function are valid. */
check_function_arguments (TYPE_ATTRIBUTES (fntype), nargs, argarray,
Index: gcc/c-opts.c
===================================================================
*** gcc/c-opts.c (revision 143863)
--- gcc/c-opts.c (working copy)
*************** c_common_handle_option (size_t scode, co
*** 409,414 ****
--- 409,415 ----
can turn it off only if it's not explicit. */
if (warn_main == -1)
warn_main = (value ? 2 : 0);
+ warn_unprototyped_calls = 1;
}
else
{