http://llvm.org/bugs/show_bug.cgi?id=17179
Bug ID: 17179
Summary: likely wrong code bug
Product: new-bugs
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
regehr@john-home ~/z/reduce/r110 $ clang -O small.c ; ./a.out
51
regehr@john-home ~/z/reduce/r110 $ clang -Os small.c ; ./a.out
-6568
regehr@john-home ~/z/reduce/r110 $ cat small.c
int printf(const char *, ...);
int x0, x1, x2;
int main (void) {
int x3;
for (x1 = 0; x1 != 52; x1++) {
for (x2 = 0; x2 <= 0; x2 = 1) {
int x4 = x0 ^ x1;
x3 = x4;
}
}
printf("%d\n", x3);
return 0;
}
regehr@john-home ~/z/reduce/r110 $ clang -v
clang version 3.4 (trunk 190381)
Target: x86_64-unknown-linux-gnu
Thread model: posix
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
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