gcc/testsuite/gcc.dg/strlenopt-38.c

   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 }