possible integer codegen error #2911
Description
| Bugzilla Link | 2539 |
| Resolution | FIXED |
| Resolved on | Jul 11, 2008 00:41 |
| Version | unspecified |
| OS | Linux |
| CC | @efriedma-quic |
Extended Description
From svn 53390 on Ubuntu Feisty on ia32.
[regehr@babel tmp2]$ llvm-gcc -O1 -fwrapv small.c -o small
[regehr@babel tmp2]$ ./small
1
[regehr@babel tmp2]$ llvm-gcc -O2 -fwrapv small.c -o small
[regehr@babel tmp2]$ ./small
0
[regehr@babel tmp2]$ cat small.c
#include <stdint.h>
#include <stdio.h>
static inline unsigned long int
mod_rhs(const long int rhs)
{
if (rhs == 0) return 1;
return rhs;
}
int16_t g_6;
uint8_t g_155;
int8_t g_156;
int32_t func_87 (void);
int32_t func_87 (void)
{
return 1;
}
int32_t func_146 (void);
int32_t func_146 (void)
{
int8_t p_147;
for (p_147 = 0; 1; p_147 -= 1)
if (p_147 >= ((func_87 ()) < (p_147 % mod_rhs (g_155))))
{
g_156 = 1;
for (p_147 = 1; p_147; p_147 += 1)
return 1;
}
else
return 1;
}
int main (void)
{
func_146 ();
printf ("%d\n", g_156);
return 0;
}