[LLVMbugs] [Bug 9113] New: likely integer wrong code bug

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9113

           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: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: llvmbugs at cs.uiuc.edu, chenyang at cs.utah.edu


[regehr at gamow tmp447]$ clang -O0 small.c -o small
[regehr at gamow tmp447]$ ./small 
1
[regehr at gamow tmp447]$ clang -O1 small.c -o small
[regehr at gamow tmp447]$ ./small 
169
[regehr at gamow tmp447]$ clang -v

clang version 2.9 (trunk 124573)
Target: x86_64-unknown-linux-gnu
Thread model: posix

[regehr at gamow tmp447]$ cat small.c


int printf(const char *format, ...);

char g_14 = 0;

int main(void) {
   unsigned int l_1 = 0;
   unsigned char l_2 = 0;
   l_1 = (g_14 / 5) != (unsigned char)g_14;
   l_2 = l_1 + ((1 + g_14) ^ g_14);
   printf("%d\n", l_2);
   return 0;
}

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