[LLVMbugs] [Bug 2163] New: Codegen illegally reorders division by zero before function call

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2163

           Summary: Codegen illegally reorders division by zero before
                    function call
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


Testcase:

#include <stdlib.h>
int x() {exit(0);}
int main(void) {x(); return 1/0;}

Running this through llvm-gcc -O0, generates a program that crashes.  This
program should not crash.  (The semantics of this program are well-defined
because the division by zero should not end up being executed.)


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