http://llvm.org/bugs/show_bug.cgi?id=12541
Bug #: 12541
Summary: wrong code bug
Product: new-bugs
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
I have a few wrong-code bug reports in the system already but this one has such
a tiny test case it seems to need reporting as well.
[regehr@dyson r26]$ gcc small.c ; ./a.out
1
[regehr@dyson r26]$ clang small.c ; ./a.out
1
[regehr@dyson r26]$ clang -O small.c ; ./a.out
0
[regehr@dyson r26]$ cat small.c
int printf (const char *, ...);
int a, b;
int
main ()
{
a = (char) (1656690544 % (b ^ 3));
printf ("%d\n", a);
return 0;
}
[regehr@dyson r26]$ clang -v
clang version 3.1 (trunk 154589)
Target: x86_64-unknown-linux-gnu
Thread model: posix
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