Simple testcase not even worth attaching preprocessed source for, using
h...@155680. Note that this only arises in C++, not when compiled as C:
------------------------------------------------------------------------
$ cat badwarn.cpp
extern void bar (void);
int foo (void) __attribute__ ((__noreturn__));
int
foo (void)
{
while (1)
{
bar ();
}
}
$ g++-4 -c badwarn.cpp -Wall
badwarn.cpp: In function 'int foo()':
badwarn.cpp:12:1: warning: no return statement in function returning non-void
------------------------------------------------------------------------
Discussed on the list at http://gcc.gnu.org/ml/gcc/2010-01/threads.html#00180;
Ross Smith identified this as a regression as it does not arise with 4.0.1,
4.2.1 and 4.3.4, and HJ tracked it to r.138140:
http://gcc.gnu.org/ml/gcc-cvs/2008-07/msg00852.html
--
Summary: Bogus "no return statement in function returning non-
void" warning
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: davek at gcc dot gnu dot org
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42674
