1  /* Test for a bogus warning on comparison between signed and unsigned.
       2     This was inspired by code in gcc. */
       3  
       4  /* { dg-do compile } */
       5  /* { dg-options "-Wsign-compare" } */
       6  
       7  int tf = 1;
       8  
       9  void f(int x, unsigned int y)
      10  {
      11    /* Test comparing conditional expressions containing truth values.
      12       This can occur explicitly, or e.g. when (foo?2:(bar?1:0)) is
      13       optimized into (foo?2:(bar!=0)).  */
      14    x > (tf?64:(tf!=x)); /* { dg-bogus "changes signedness" "case 1" } */
      15    y > (tf?64:(tf!=x)); /* { dg-bogus "changes signedness" "case 2" } */
      16    x > (tf?(tf!=x):64); /* { dg-bogus "changes signedness" "case 3" } */
      17    y > (tf?(tf!=x):64); /* { dg-bogus "changes signedness" "case 4" } */
      18  
      19    x > (tf?64:(tf==x)); /* { dg-bogus "changes signedness" "case 5" } */
      20    y > (tf?64:(tf==x)); /* { dg-bogus "changes signedness" "case 6" } */
      21    x > (tf?(tf==x):64); /* { dg-bogus "changes signedness" "case 7" } */
      22    y > (tf?(tf==x):64); /* { dg-bogus "changes signedness" "case 8" } */
      23  
      24    x > (tf?64:(tf>x)); /* { dg-bogus "changes signedness" "case 9" } */
      25    y > (tf?64:(tf>x)); /* { dg-bogus "changes signedness" "case 10" } */
      26    x > (tf?(tf>x):64); /* { dg-bogus "changes signedness" "case 11" } */
      27    y > (tf?(tf>x):64); /* { dg-bogus "changes signedness" "case 12" } */
      28  
      29    x < (tf?64:(tf<x)); /* { dg-bogus "changes signedness" "case 13" } */
      30    y < (tf?64:(tf<x)); /* { dg-bogus "changes signedness" "case 14" } */
      31    x < (tf?(tf<x):64); /* { dg-bogus "changes signedness" "case 15" } */
      32    y < (tf?(tf<x):64); /* { dg-bogus "changes signedness" "case 16" } */
      33  
      34    x > (tf?64:(tf>=x)); /* { dg-bogus "changes signedness" "case 17" } */
      35    y > (tf?64:(tf>=x)); /* { dg-bogus "changes signedness" "case 18" } */
      36    x > (tf?(tf>=x):64); /* { dg-bogus "changes signedness" "case 19" } */
      37    y > (tf?(tf>=x):64); /* { dg-bogus "changes signedness" "case 20" } */
      38  
      39    x > (tf?64:(tf<=x)); /* { dg-bogus "changes signedness" "case 21" } */
      40    y > (tf?64:(tf<=x)); /* { dg-bogus "changes signedness" "case 22" } */
      41    x > (tf?(tf<=x):64); /* { dg-bogus "changes signedness" "case 23" } */
      42    y > (tf?(tf<=x):64); /* { dg-bogus "changes signedness" "case 24" } */
      43  
      44    x > (tf?64:(tf&&x)); /* { dg-bogus "changes signedness" "case 25" } */
      45    y > (tf?64:(tf&&x)); /* { dg-bogus "changes signedness" "case 26" } */
      46    x > (tf?(tf&&x):64); /* { dg-bogus "changes signedness" "case 27" } */
      47    y > (tf?(tf&&x):64); /* { dg-bogus "changes signedness" "case 28" } */
      48  
      49    x > (tf?64:(tf||x)); /* { dg-bogus "changes signedness" "case 29" } */
      50    y > (tf?64:(tf||x)); /* { dg-bogus "changes signedness" "case 30" } */
      51    x > (tf?(tf||x):64); /* { dg-bogus "changes signedness" "case 31" } */
      52    y > (tf?(tf||x):64); /* { dg-bogus "changes signedness" "case 32" } */
      53  
      54    x > (tf?64:(!tf)); /* { dg-bogus "changes signedness" "case 33" } */
      55    y > (tf?64:(!tf)); /* { dg-bogus "changes signedness" "case 34" } */
      56    x > (tf?(!tf):64); /* { dg-bogus "changes signedness" "case 35" } */
      57    y > (tf?(!tf):64); /* { dg-bogus "changes signedness" "case 36" } */
      58  
      59  }