gcc/testsuite/gcc.c-torture/compile/20031023-1.c

   1 #ifndef ASIZE
   2 # define ASIZE 0x10000000000UL
   3 #endif
   4
   5 #include <limits.h>
   6
   7 #if LONG_MAX < 8 * ASIZE
   8 # undef ASIZE
   9 # define ASIZE 4096
  10 #endif
  11
  12 extern void abort (void);
  13
  14 int __attribute__((noinline))
  15 foo (const char *s)
  16 {
  17   if (!s)
  18     return 1;
  19   if (s[0] != 'a')
  20     abort ();
  21   s += ASIZE - 1;
  22   if (s[0] != 'b')
  23     abort ();
  24   return 0;
  25 }
  26
  27 int (*fn) (const char *) = foo;
  28
  29 int __attribute__((noinline))
  30 bar (void)
  31 {
  32   char s[ASIZE];
  33   s[0] = 'a';
  34   s[ASIZE - 1] = 'b';
  35   foo (s);
  36   foo (s);
  37   return 0;
  38 }
  39
  40 int __attribute__((noinline))
  41 baz (long i)
  42 {
  43   if (i)
  44     return fn (0);
  45   else
  46     {
  47       char s[ASIZE];
  48       s[0] = 'a';
  49       s[ASIZE - 1] = 'b';
  50       foo (s);
  51       foo (s);
  52       return fn (0);
  53     }
  54 }
  55
  56 int
  57 main (void)
  58 {
  59   if (bar ())
  60     abort ();
  61   if (baz (0) != 1)
  62     abort ();
  63   if (baz (1) != 1)
  64     abort ();
  65   return 0;
  66 }