gcc/testsuite/gcc.dg/pr31507-1.c

   1 /* PR target/31507 */
   2 /* { dg-do run } */
   3 /* { dg-options "-Os -fno-omit-frame-pointer" } */
   4 /* { dg-require-effective-target alloca } */
   5
   6 extern void abort (void);
   7
   8 __attribute__((noinline)) void
   9 foo (double d0, double d1, double d2, double d3,
  10      double d4, double d5, double d6, double d7,
  11      float f0, float f1, float f2, float f3,
  12      char *p)
  13 {
  14   if (d0 != 0 || d1 != 1 || d2 != 2 || d3 != 3)
  15     abort ();
  16   if (d4 != 4 || d5 != 5 || d6 != 6 || d7 != 7)
  17     abort ();
  18   if (f0 != 10 || f1 != 11 || f2 != 12 || f3 != 13)
  19     abort ();
  20   if (__builtin_memcmp (p, "foo", 4) != 0)
  21     abort ();
  22   __builtin_memcpy (p, "bar", 4);
  23 }
  24
  25 __attribute__((noinline)) void
  26 bar (int x)
  27 {
  28   char p[x];
  29   if (x >= sizeof "foo")
  30     __builtin_memcpy (p, "foo", 4);
  31   foo (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0,
  32        10.0f, 11.0f, 12.0f, 13.0f, p);
  33   if (x >= sizeof "bar" && __builtin_memcmp (p, "bar", 4) != 0)
  34     abort ();
  35 }
  36
  37 int
  38 main (void)
  39 {
  40   bar (128);
  41   return 0;
  42 }