[LLVMbugs] [Bug 3150] New: clang integer codegen bug

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Mon Dec 1 09:45:49 PST 2008


http://llvm.org/bugs/show_bug.cgi?id=3150

           Summary: clang integer codegen bug
           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: regehr at cs.utah.edu
                CC: llvmbugs at cs.uiuc.edu


Using clang r60351 on Ubuntu Hardy on x86, the program below prints 0, whereas
it should print 1.

#include <stdio.h>

static int safe_mul_int_s_s (int si1, int si2)
{
  return si1 * si2;
}

volatile int g_44;

void func_38 (void);
void func_38 (void)
{
  g_44 = 1;
  return 1;
}

void func_18 (void);
void func_18 (void)
{
  if (safe_mul_int_s_s (1, 1 || 1))
    {
      func_38 ();
    }
}

int main (void)
{
  func_18 ();
  printf ("%d\n", g_44);
  return 0;
}


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