gcc-4.9/gcc/testsuite/gcc.c-torture/execute/20020805-1.c


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/* This testcase was miscompiled on IA-32, because fold-const
   assumed associate_trees is always done on PLUS_EXPR.  */

extern void abort (void);
extern void exit (int);

void check (unsigned int m)
{
  if (m != (unsigned int) -1)
    abort ();
}

unsigned int n = 1;

int main (void)
{
  unsigned int m;
  m = (1 | (2 - n)) | (-n);
  check (m);
  exit (0);
}