1  /* PR middle-end/98166: bogus -Wmismatched-dealloc on user-defined allocator
       2     and inlining
       3     Verify that without inlining, both the allocator and the deallocator
       4     can be declared inline without a warning and that mismatched calls are
       5     detected, but that declaring them always_inline does trigger a warning.
       6     { dg-do compile }
       7     { dg-options "-Wall" } */
       8  
       9  __attribute__ ((malloc (__builtin_free)))
      10  inline int*
      11  alloc_int (int n)
      12  {
      13    return (int*)__builtin_malloc (n + sizeof (int));
      14  }
      15  
      16  void test_nowarn_int (int n)
      17  {
      18    {
      19      int *p = alloc_int (n);
      20      __builtin_free (p);
      21    }
      22  
      23    {
      24      int *p = alloc_int (n);
      25      __builtin_free (p + 1);   // { dg-warning "'__builtin_free|void __builtin_free\\(void\\*\\)' called on pointer 'p|<unknown>' with nonzero offset" }
      26    }
      27  }
      28  
      29  
      30  inline void
      31  dealloc_long (long *p) { __builtin_free (p); }
      32  
      33  __attribute__ ((malloc (dealloc_long)))
      34  long* alloc_long (int);
      35  
      36  void test_nowarn_long (int n)
      37  {
      38    {
      39      long *p = alloc_long (n);
      40      dealloc_long (p);
      41    }
      42  
      43    {
      44      long *p = alloc_long (n);
      45      dealloc_long (p + 1);     // { dg-warning "'dealloc_long' called on pointer 'p|<unknown>' with nonzero offset" }
      46    }
      47  }
      48  
      49  
      50  inline __attribute__ ((always_inline)) void
      51  dealloc_float (float *p)      // { dg-message "deallocation function declared here" }
      52  {
      53    __builtin_free (p);         // { dg-warning "'__builtin_free|void __builtin_free\\(void\\*\\)' called on pointer 'p|<unknown>' with nonzero offset" }
      54  }
      55  
      56  __attribute__ ((malloc (dealloc_float)))
      57  float* alloc_float (int);     // { dg-warning "'malloc \\(dealloc_float\\)' attribute ignored with deallocation functions declared 'inline'" }
      58  
      59  void test_nowarn_float (int n)
      60  {
      61    {
      62      float *p = alloc_float (n);
      63      dealloc_float (p);
      64    }
      65  
      66    {
      67      float *p = alloc_float (n);
      68      dealloc_float (p + 2);
      69    }
      70  }