gcc/testsuite/gcc.c-torture/execute/pr84478.c

   1 /* PR tree-optimization/84478 */
   2
   3 long poolptr;
   4 unsigned char *strpool;
   5 static const char *poolfilearr[] = {
   6   "mu",
   7   "",
   8 #define A "x",
   9 #define B A "xx", A A "xxx", A A A A A
  10 #define C B B B B B B B B B B
  11 #define D C C C C C C C C C C
  12   D C C C C C C C B B B
  13  ((void *)0)
  14 };
  15
  16 __attribute__((noipa)) long
  17 makestring (void)
  18 {
  19   return 1;
  20 }
  21
  22 __attribute__((noipa)) long
  23 loadpoolstrings (long spare_size)
  24 {
  25   const char *s;
  26   long g = 0;
  27   int i = 0, j = 0;
  28   while ((s = poolfilearr[j++]))
  29     {
  30       int l = __builtin_strlen (s);
  31       i += l;
  32       if (i >= spare_size) return 0;
  33       while (l-- > 0) strpool[poolptr++] = *s++;
  34       g = makestring ();
  35     }
  36   return g;
  37 }
  38
  39 int
  40 main ()
  41 {
  42   strpool = __builtin_malloc (4000);
  43   if (!strpool)
  44     return 0;
  45   asm volatile ("" : : : "memory");
  46   volatile int r = loadpoolstrings (4000);
  47   __builtin_free (strpool);
  48   return 0;
  49 }