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re PR middle-end/42674 (Bogus "no return statement in function returning non-void" warning)

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PR middle-end/42674
	* c-decl.c (finish_function): Don't emit -Wreturn-type warnings in
	functions with noreturn attribute.

	* decl.c (finish_function): Don't emit -Wreturn-type warnings in
	functions with noreturn attribute.

	* c-c++-common/pr42674.c: New test.

From-SVN: r155920
This commit is contained in:
Jakub Jelinek 2010-01-14 23:43:56 +01:00 committed by Jakub Jelinek
parent 5b1cbe1453
commit ef5d11818d
6 changed files with 30 additions and 0 deletions

4
gcc/ChangeLog

@ -1,5 +1,9 @@
2010-01-14 Jakub Jelinek <jakub@redhat.com>
PR middle-end/42674
* c-decl.c (finish_function): Don't emit -Wreturn-type warnings in
functions with noreturn attribute.
PR c++/42608
* varasm.c (declare_weak): Add weak attribute to decl if it
doesn't have one already.

2
gcc/c-decl.c

@ -8032,6 +8032,8 @@ finish_function (void)
&& !current_function_returns_value && !current_function_returns_null
/* Don't complain if we are no-return. */
&& !current_function_returns_abnormally
/* Don't complain if we are declared noreturn. */
&& !TREE_THIS_VOLATILE (fndecl)
/* Don't warn for main(). */
&& !MAIN_NAME_P (DECL_NAME (fndecl))
/* Or if they didn't actually specify a return type. */

6
gcc/cp/ChangeLog

@ -1,3 +1,9 @@
2010-01-14 Jakub Jelinek <jakub@redhat.com>
PR middle-end/42674
* decl.c (finish_function): Don't emit -Wreturn-type warnings in
functions with noreturn attribute.
2010-01-14 Jason Merrill <jason@redhat.com>
PR c++/42701

2
gcc/cp/decl.c

@ -12541,6 +12541,8 @@ finish_function (int flags)
&& !current_function_returns_value && !current_function_returns_null
/* Don't complain if we abort or throw. */
&& !current_function_returns_abnormally
/* Don't complain if we are declared noreturn. */
&& !TREE_THIS_VOLATILE (fndecl)
&& !DECL_NAME (DECL_RESULT (fndecl))
&& !TREE_NO_WARNING (fndecl)
/* Structor return values (if any) are set by the compiler. */

3
gcc/testsuite/ChangeLog

@ -1,5 +1,8 @@
2010-01-14 Jakub Jelinek <jakub@redhat.com>
PR middle-end/42674
* c-c++-common/pr42674.c: New test.
PR c++/42608
* g++.dg/template/instantiate11.C: New test.

13
gcc/testsuite/c-c++-common/pr42674.c Normal file

@ -0,0 +1,13 @@
/* PR middle-end/42674 */
/* { dg-do compile } */
/* { dg-options "-Wreturn-type" } */
extern void bar (void);
static int foo (void) __attribute__ ((__noreturn__, __used__));
static int
foo (void)
{
while (1)
bar ();
}