[LLVMbugs] [Bug 2302] New: Incorrect optimization with recursive call to main

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2302

           Summary: Incorrect optimization with recursive call to main
           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


#include <stdio.h>
#include <stdlib.h>
int x;
int main() {
if (++x > 10) exit(0);
else main();
printf("foo");
return 0;
}

This program should not print any text; compiled with llvm-gcc -O3, it does.

AFAIK, this is perfectly legal C code (although not legal C++).


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