http://llvm.org/bugs/show_bug.cgi?id=8677
Summary: likely integer wrong code bug
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]
The -O1 result is correct.
reg...@home:~/volatile/bugs/tmp342$ clang -O1 small.c -o small
reg...@home:~/volatile/bugs/tmp342$ ./small
1
reg...@home:~/volatile/bugs/tmp342$ clang -O2 small.c -o small
reg...@home:~/volatile/bugs/tmp342$ ./small
-1
reg...@home:~/volatile/bugs/tmp342$ cat small.c
int printf (const char *format, ...);
static int g_23 = 1;
static int func_16 (int p_19)
{
g_23 = -1;
return p_19;
}
int main (void)
{
int *l_172[1];
int **l_176 = &l_172[0];
int i;
for (i = 0; i < 1; i++) {
l_172[i] = &g_23;
}
**l_176 = func_16 (**l_176);
printf ("%d\n", g_23);
return 0;
}
reg...@home:~/volatile/bugs/tmp342$ clang -v
clang version 2.9 (trunk 120082)
Target: i386-pc-linux-gnu
Thread model: posix
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