http://llvm.org/bugs/show_bug.cgi?id=7833
Summary: possible integer wrong code bug on x64
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
[reg...@babel work000]$ clang -O1 small.c -o small
[reg...@babel work000]$ ./small
-1
[reg...@babel work000]$ clang -O2 small.c -o small
[reg...@babel work000]$ ./small
255
[reg...@babel work000]$ clang -v
clang version 2.8 (trunk 110342)
Target: x86_64-unknown-linux-gnu
Thread model: posix
[reg...@babel work000]$ cat small.c
extern int printf (__const char *__restrict __format, ...);
static int g_16 = -1;
static int g_108;
int *g_107 = &g_108;
static int **g_106 = &g_107;
static int g_252;
static int g_263 = 0x79B6A971L;
int func_2 (int p_4, int p_5, unsigned long p_6)
{
g_16 = 0;
**g_106 |= 7L;
if (!(((&g_16 == 0) & ((7L >= p_4) >= p_6))))
{
return p_5;
}
return p_6;
}
int main (void)
{
g_16 = func_2 (-4L, g_16, g_263) | 1;
*g_107 = (0 != &g_252);
printf("%d\n", g_16);
return 0;
}
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