gomp-20050608-branch/gcc/testsuite/gcc.c-torture/execute/pr20601-1.c

   1 /* PR tree-optimization/20601 */
   2 extern void abort (void);
   3 extern void exit (int);
   4
   5 struct T
   6 {
   7   char *t1;
   8   char t2[4096];
   9   char **t3;
  10 };
  11
  12 int a[5];
  13 int b;
  14 char **c;
  15 int d;
  16 char **e;
  17 struct T t;
  18 char *f[16];
  19 char *g[] = { "a", "-u", "b", "c" };
  20
  21 __attribute__ ((__noreturn__)) void
  22 foo (void)
  23 {
  24   while (1);
  25 }
  26
  27 __attribute__ ((noinline)) char *
  28 bar (char *x, unsigned int y)
  29 {
  30   return 0;
  31 }
  32
  33 static inline char *
  34 baz (char *x, unsigned int y)
  35 {
  36   if (sizeof (t.t2) != (unsigned int) -1 && y > sizeof (t.t2))
  37     foo ();
  38   return bar (x, y);
  39 }
  40
  41 static inline int
  42 setup1 (int x)
  43 {
  44   char *p;
  45   int rval;
  46
  47   if (!baz (t.t2, sizeof (t.t2)))
  48     baz (t.t2, sizeof (t.t2));
  49
  50   if (x & 0x200)
  51     {
  52       char **h, **i = e;
  53
  54       ++d;
  55       e = f;
  56       if (t.t1 && *t.t1)
  57         e[0] = t.t1;
  58       else
  59         abort ();
  60
  61       for (h = e + 1; (*h = *i); ++i, ++h)
  62         ;
  63     }
  64   return 1;
  65 }
  66
  67 static inline int
  68 setup2 (void)
  69 {
  70   int j = 1;
  71
  72   e = c + 1;
  73   d = b - 1;
  74   while (d > 0 && e[0][0] == '-')
  75     {
  76       if (e[0][1] != '\0' && e[0][2] != '\0')
  77         abort ();
  78
  79       switch (e[0][1])
  80         {
  81         case 'u':
  82           if (!e[1])
  83             abort ();
  84
  85           t.t3 = &e[1];
  86           d--;
  87           e++;
  88           break;
  89         case 'P':
  90           j |= 0x1000;
  91           break;
  92         case '-':
  93           d--;
  94           e++;
  95           if (j == 1)
  96             j |= 0x600;
  97           return j;
  98         }
  99       d--;
 100       e++;
 101     }
 102
 103   if (d > 0 && !(j & 1))
 104     abort ();
 105
 106   return j;
 107 }
 108
 109 int
 110 main (void)
 111 {
 112   int x;
 113   c = g;
 114   b = 4;
 115   x = setup2 ();
 116   t.t1 = "/bin/sh";
 117   setup1 (x);
 118   /* PRE shouldn't transform x into the constant 0x601 here, it's not legal.  */
 119   if ((x & 0x400) && !a[4])
 120     abort ();
 121   exit (0);
 122 }