http://llvm.org/bugs/show_bug.cgi?id=9998
Summary: likely 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], [email protected]
[regehr@gamow tmp025]$ clang -O0 small.c -o small
[regehr@gamow tmp025]$ ./small
1
[regehr@gamow tmp025]$ clang -O1 small.c -o small
[regehr@gamow tmp025]$ ./small
0
[regehr@gamow tmp025]$ gcc -O1 small.c -o small
[regehr@gamow tmp025]$ ./small
1
[regehr@gamow tmp025]$ clang -v
clang version 3.0 (trunk 131944)
Target: x86_64-unknown-linux-gnu
Thread model: posix
[regehr@gamow tmp025]$ cat small.c
int printf (const char *, ...);
struct S0
{
signed f0:1;
};
struct S0 g_122 = {
1,
};
unsigned g_626;
int
func_55 (int p_60)
{
unsigned long l_373 = 0x6546E4C6CD30E57BLL;
if (g_122.f0 > l_373)
p_60 = 1;
return p_60;
}
int
main (void)
{
g_626 = func_55 (0);
printf ("%u\n", g_626);
return 0;
}
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