1  /* PR tree-optimization/83444 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-optimized" } */
       4  /* { dg-final { scan-tree-dump-not "abort \\(\\)" "optimized" } } */
       5  
       6  #include "strlenopt.h"
       7  
       8  void
       9  foo (void)
      10  {
      11    char a[5] = "012";
      12    strcpy (a, "");
      13    if (strlen (a) != 0)
      14      abort ();
      15  }
      16  
      17  void
      18  bar (void)
      19  {
      20    char a[5] = "012";
      21    char b[7] = "";
      22    strcpy (a, b);
      23    if (strlen (a) != 0)
      24      abort ();
      25  }
      26  
      27  struct S { char a[4]; char b[5]; char c[7]; };
      28  
      29  void
      30  baz (void)
      31  {
      32    struct S s;
      33    strcpy (s.b, "012");
      34    strcpy (s.c, "");
      35    strcpy (s.b, s.c);
      36    if (s.b[0] != 0)
      37      abort ();
      38  }
      39  
      40  void
      41  boo (void)
      42  {
      43    struct S s;
      44    strcpy (s.b, "012");
      45    strcpy (s.c, "");
      46    strcpy (s.b, s.c);
      47    if (strlen (s.b) != 0)
      48      abort ();
      49  }