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re PR c/14188 (Suggestion: improve warning message for call through incompatible type)

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PR c/14188
	* builtins.c (expand_builtin_va_arg): Emit an informative message
	if a trap is generated.
	* c-typeck.c (build_function_call): Likewise.

Co-Authored-By: Falk Hueffner <falk@debian.org>

From-SVN: r78294
This commit is contained in:
Eric Botcazou 2004-02-23 13:41:43 +01:00 committed by Eric Botcazou
parent 29f4ceab97
commit bba745c19d
6 changed files with 33 additions and 15 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2004-02-23 Eric Botcazou <ebotcazou@libertysurf.fr>
Falk Hueffner <falk@debian.org>
PR c/14188
* builtins.c (expand_builtin_va_arg): Emit an informative message
if a trap is generated.
* c-typeck.c (build_function_call): Likewise.
2004-02-22 Jakub Jelinek <jakub@redhat.com>
* gcov-io.c (gcov_open) [GCOV_LOCKED]: Use open + fdopen instead of

1
gcc/builtins.c
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@ -4134,6 +4134,7 @@ expand_builtin_va_arg (tree valist, tree type)
/* We can, however, treat "undefined" any way we please.
Call abort to encourage the user to fix the program. */
inform ("if this code is reached, the program will abort");
expand_builtin_trap ();
/* This is dead code, but go ahead and finish so that the

4
gcc/c-typeck.c
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@ -1709,6 +1709,10 @@ build_function_call (tree function, tree params)
executions of the program must execute the code. */
warning ("function called through a non-compatible type");
/* We can, however, treat "undefined" any way we please.
Call abort to encourage the user to fix the program. */
inform ("if this code is reached, the program will abort");
if (VOID_TYPE_P (return_type))
return trap;
else

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2004-02-23 Eric Botcazou <ebotcazou@libertysurf.fr>
* gcc.dg/cast-function-1.c: Adjust for new informative message.
* gcc.dg/va-arg-1.c: Likewise.
2004-02-23 Giovanni Bajo <giovannibajo@gcc.gnu.org>
PR c++/14143

24
gcc/testsuite/gcc.dg/cast-function-1.c
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@ -22,19 +22,19 @@ void bar(void)
int i;
str_t s;
d = ((double (*) (int)) foo1) (i); /* { dg-warning "non-compatible" } */
i = ((int (*) (double)) foo1) (d); /* { dg-warning "non-compatible" } */
s = ((str_t (*) (int)) foo1) (i); /* { dg-warning "non-compatible" } */
((void (*) (int)) foo1) (d); /* { dg-warning "non-compatible" } */
i = ((int (*) (int)) foo1) (i); /* { dg-bogus "non-compatible" } */
(void) foo1 (i); /* { dg-bogus "non-compatible" } */
d = ((double (*) (int)) foo1) (i); /* { dg-warning "non-compatible|abort" } */
i = ((int (*) (double)) foo1) (d); /* { dg-warning "non-compatible|abort" } */
s = ((str_t (*) (int)) foo1) (i); /* { dg-warning "non-compatible|abort" } */
((void (*) (int)) foo1) (d); /* { dg-warning "non-compatible|abort" } */
i = ((int (*) (int)) foo1) (i); /* { dg-bogus "non-compatible|abort" } */
(void) foo1 (i); /* { dg-bogus "non-compatible|abort" } */
d = ((double (*) (int)) foo2) (i); /* { dg-warning "non-compatible" } */
i = ((int (*) (double)) foo2) (d); /* { dg-bogus "non-compatible" } */
s = ((str_t (*) (int)) foo2) (i); /* { dg-warning "non-compatible" } */
((void (*) (int)) foo2) (d); /* { dg-warning "non-compatible" } */
i = ((int (*) (int)) foo2) (i); /* { dg-bogus "non-compatible" } */
(void) foo2 (i); /* { dg-bogus "non-compatible" } */
d = ((double (*) (int)) foo2) (i); /* { dg-warning "non-compatible|abort" } */
i = ((int (*) (double)) foo2) (d); /* { dg-bogus "non-compatible|abort" } */
s = ((str_t (*) (int)) foo2) (i); /* { dg-warning "non-compatible|abort" } */
((void (*) (int)) foo2) (d); /* { dg-warning "non-compatible|abort" } */
i = ((int (*) (int)) foo2) (i); /* { dg-bogus "non-compatible|abort" } */
(void) foo2 (i); /* { dg-bogus "non-compatible|abort" } */
}
int foo1(int arg)

6
gcc/testsuite/gcc.dg/va-arg-1.c
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@ -7,7 +7,7 @@ volatile int i;
void foo()
{
i = va_arg(v, char); /* { dg-warning "is promoted to|so you should" "char" } */
i = va_arg(v, short); /* { dg-warning "is promoted to" "short" } */
i = va_arg(v, float); /* { dg-warning "is promoted to" "float" } */
i = va_arg(v, char); /* { dg-warning "is promoted to|so you should|abort" "char" } */
i = va_arg(v, short); /* { dg-warning "is promoted to|abort" "short" } */
i = va_arg(v, float); /* { dg-warning "is promoted to|abort" "float" } */
}