1  /* PR tree-optimization/86614 - duplicate -Warray-bounds for a strncpy
       2     call with out-of-bounds offset
       3     { dg-do compile }
       4     { dg-options "-O2 -Warray-bounds" } */
       5  
       6  #if __cplusplus
       7  extern "C"
       8  #endif
       9  char *strncpy (char *, const char *, __SIZE_TYPE__);
      10  
      11  void sink (void *);
      12  
      13  struct A { char b[17]; } a[2];
      14  
      15  void g (const char *s, unsigned n)
      16  {
      17    int i = (char *)a[1].b - (char *)a + 1;
      18    char *d = a[1].b;
      19    /* Verify the bug is diagnosed exactly once, using either form
      20       of the warning.  */
      21    strncpy (d + i, s, n);	/* { dg-warning "array subscript \[0-9]+ is outside array bounds|offset \[0-9]+ is out of the bounds" } */
      22  				/* { dg-bogus "offset \[0-9]+ is out of the bounds|array subscript \[0-9]+ is outside array bounds" "" { target *-*-* } .-1 } */
      23  }