1  /* PR tree-optimization/93100 - gcc -fsanitize=address inhibits -Wuninitialized
       2     { dg-do compile }
       3     { dg-options "-Wall -fsanitize=address" }
       4     { dg-skip-if "no address sanitizer" { no_fsanitize_address } } */
       5  
       6  struct A
       7  {
       8    _Bool b;
       9    int i;
      10  };
      11  
      12  void warn_A_b_O0 (void)
      13  {
      14    struct A a;
      15  
      16    if (a.b)          // { dg-warning "\\\[-Wuninitialized" }
      17      {
      18        (void)&a;
      19      }
      20  }
      21  
      22  void warn_A_i_O0 (void)
      23  {
      24    struct A a;
      25  
      26    if (a.i)          // { dg-warning "\\\[-Wuninitialized" }
      27      {
      28        (void)&a;
      29      }
      30  }
      31  
      32  #pragma GCC optimize ("1")
      33  
      34  void warn_A_b_O1 (void)
      35  {
      36    struct A a;
      37  
      38    if (a.b)          // { dg-warning "\\\[-Wuninitialized" }
      39      {
      40        (void)&a;
      41      }
      42  }
      43  
      44  void warn_A_i_O1 (void)
      45  {
      46    struct A a;
      47  
      48    if (a.i)          // { dg-warning "\\\[-Wuninitialized" }
      49      {
      50        (void)&a;
      51      }
      52  }
      53  
      54  
      55  #pragma GCC optimize ("2")
      56  
      57  void warn_A_b_O2 (void)
      58  {
      59    struct A a;
      60  
      61    if (a.b)          // { dg-warning "\\\[-Wuninitialized" }
      62      {
      63        (void)&a;
      64      }
      65  }
      66  
      67  void warn_A_i_O2 (void)
      68  {
      69    struct A a;
      70  
      71    if (a.i)          // { dg-warning "\\\[-Wuninitialized" }
      72      {
      73        (void)&a;
      74      }
      75  }