1  /* Test for a bogus warning on comparison between signed and unsigned.
       2     Origin: Kaveh R. Ghazi <ghazi@caip.rutgers.edu> 8/21/2001.  */
       3  
       4  /* { dg-do compile } */
       5  /* { dg-options "-Wsign-compare" } */
       6  
       7  extern void bar(void);
       8  
       9  int foo(int x, int y, unsigned u)
      10  {
      11    /* A *_DIV_EXPR is non-negative if both operands are.  */
      12  
      13    if (u < ((x=-22)/33)) /* { dg-warning "different signedness" "DIV_EXPR" } */
      14      return x;
      15  
      16    if (u < ((x=22)/33))
      17      return x;
      18  
      19    if (u < ((x=22)/(y=33)))
      20      return x;
      21  
      22    if (u < (((x&0x10000)?128:64) / ((y&0x10000)?8:4)))
      23      return x;
      24  
      25  
      26    /* A *_MOD_EXPR is non-negative if the first operand is.  */
      27  
      28    if (u < ((x=-22)%33)) /* { dg-warning "different signedness" "MOD_EXPR" } */
      29      return x;
      30  
      31    if (u < ((x=22)%-33))
      32      return x;
      33  
      34    if (u < ((x==y)%-33))
      35      return x;
      36  
      37    if (u < (((x=22)/33)%-33))
      38      return x;
      39  
      40    return 0;
      41  }