1  /* Test disabling -Wtype-limits */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wextra -Wno-type-limits" } */
       4  
       5  
       6  void a (unsigned char x)
       7  {
       8    if (x < 0)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
       9    if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
      10    if (0 > x)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
      11    if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
      12    if (x <= 255) /* { dg-bogus "comparison is always true due to limited range of data type" } */
      13      return;
      14    if (255 >= x) /* { dg-bogus "comparison is always true due to limited range of data type" } */
      15      return;
      16    if ((int)x <= 255)
      17      return;
      18    if (255 >= (unsigned char) 1)
      19      return;
      20  
      21  }
      22  
      23  void b (unsigned short x)
      24  {
      25    if (x < 0)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
      26    if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
      27    if (0 > x)  return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
      28    if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
      29  }
      30  
      31  void c (unsigned int x)
      32  {
      33    if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      34    if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      35    if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      36    if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      37    if (1U >= 0) return;
      38    if (1U < 0) return;
      39    if (0 <= 1U) return;
      40    if (0 > 1U) return;
      41  }
      42  
      43  void d (unsigned long x)
      44  {
      45    if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      46    if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      47    if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      48    if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      49  }
      50  
      51  void e (unsigned long long x)
      52  {
      53    if (x < 0)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      54    if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      55    if (0 > x)  return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
      56    if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
      57  }
      58  
      59  int test (int x) 
      60  {
      61    if ((long long)x <= 0x123456789ABCLL) 
      62      return 1;
      63    else 
      64      return 0;
      65  }
      66