gcc/testsuite/gcc.c-torture/execute/builtins/strlen-2.c

   1 /* Copyright (C) 2003  Free Software Foundation.
   2
   3    Test strlen optimizations on conditional expressions.
   4
   5    Written by Jakub Jelinek, June 23, 2003.  */
   6
   7 typedef __SIZE_TYPE__ size_t;
   8 extern size_t strlen (const char *);
   9 extern char *strcpy (char *, const char *);
  10 extern int memcmp (const void *, const void *, size_t);
  11 extern void abort (void);
  12 extern int inside_main;
  13
  14 size_t g, h, i, j, k, l;
  15
  16 size_t
  17 foo (void)
  18 {
  19   if (l)
  20     abort ();
  21   return ++l;
  22 }
  23
  24 void
  25 main_test (void)
  26 {
  27   if (strlen (i ? "foo" + 1 : j ? "bar" + 1 : "baz" + 1) != 2)
  28     abort ();
  29   if (strlen (g++ ? "foo" : "bar") != 3 || g != 1)
  30     abort ();
  31   if (strlen (h++ ? "xfoo" + 1 : "bar") != 3 || h != 1)
  32     abort ();
  33   if (strlen ((i++, "baz")) != 3 || i != 1)
  34     abort ();
  35   /* The following calls might not optimize strlen call away.  */
  36   inside_main = 0;
  37   if (strlen (j ? "foo" + k++ : "bar" + k++) != 3 || k != 1)
  38     abort ();
  39   if (strlen (foo () ? "foo" : "bar") != 3 || l != 1)
  40     abort ();
  41 }