This is an interesting one...
Compiling the code below at all common optimization levels, gcc r139046
generates code that prints hello, as does 4.3.1. Pre-4.3 versions of gcc emit
code that prints nothing. I'm pretty sure that the older versions are correct.
#include <stdio.h>
int func_72 (void);
int func_72 (void)
{
printf ("hello\n");
return 0;
}
void func_58 (unsigned short p_65);
void func_58 (unsigned short p_65)
{
char g_99 = -1;
(p_65 != g_99) || (func_72 ());
}
int main (void)
{
func_58 (-1);
return 0;
}
--
Summary: possible integer codegen bug
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: regehr at cs dot utah dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37103
