gcc/testsuite/gcc.c-torture/execute/20050502-1.c

   1 /* PR rtl-optimization/21330 */
   2
   3 extern void abort (void);
   4 extern int strcmp (const char *, const char *);
   5
   6 int
   7 __attribute__((noinline))
   8 bar (const char **x)
   9 {
  10   return *(*x)++;
  11 }
  12
  13 int
  14 __attribute__((noinline))
  15 baz (int c)
  16 {
  17   return c != '@';
  18 }
  19
  20 void
  21 __attribute__((noinline))
  22 foo (const char **w, char *x, _Bool y, _Bool z)
  23 {
  24   char c = bar (w);
  25   int i = 0;
  26
  27   while (1)
  28     {
  29       x[i++] = c;
  30       c = bar (w);
  31       if (y && c == '\'')
  32         break;
  33       if (z && c == '\"')
  34         break;
  35       if (!y && !z && !baz (c))
  36         break;
  37     }
  38    x[i] = 0;
  39 }
  40
  41 int
  42 main (void)
  43 {
  44   char buf[64];
  45   const char *p;
  46   p = "abcde'fgh";
  47   foo (&p, buf, 1, 0);
  48   if (strcmp (p, "fgh") != 0 || strcmp (buf, "abcde") != 0)
  49     abort ();
  50   p = "ABCDEFG\"HI";
  51   foo (&p, buf, 0, 1);
  52   if (strcmp (p, "HI") != 0 || strcmp (buf, "ABCDEFG") != 0)
  53     abort ();
  54   p = "abcd\"e'fgh";
  55   foo (&p, buf, 1, 1);
  56   if (strcmp (p, "e'fgh") != 0 || strcmp (buf, "abcd") != 0)
  57     abort ();
  58   p = "ABCDEF'G\"HI";
  59   foo (&p, buf, 1, 1);
  60   if (strcmp (p, "G\"HI") != 0 || strcmp (buf, "ABCDEF") != 0)
  61     abort ();
  62   p = "abcdef@gh";
  63   foo (&p, buf, 0, 0);
  64   if (strcmp (p, "gh") != 0 || strcmp (buf, "abcdef") != 0)
  65     abort ();
  66   return 0;
  67 }