gcc/testsuite/gcc.dg/pr65658.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wuninitialized -O2 -Wno-implicit" } */
   3 /* { dg-require-effective-target ptr32plus } */
   4
   5 extern int optind;
   6 struct undefinfo
   7 {
   8   unsigned long l1;
   9   unsigned long l2;
  10 };
  11 struct undeffoo
  12 {
  13   char a[64];
  14   long b[4];
  15   int c[33];
  16 };
  17 struct problem
  18 {
  19   unsigned long l1;
  20   unsigned long l2;
  21   unsigned long l3;
  22   unsigned long l4;
  23 };
  24 static unsigned int undef1, undef2, undef3, undef4, undef5, undef6;
  25 static void *undefvp1;
  26 extern struct undefinfo undefinfo;
  27 static int
  28 undefinit1 (void)
  29 {
  30   struct undeffoo foo;
  31   int i;
  32   for (i = 0; i < 2000; i++)
  33     {
  34       undef6++;
  35       external_function5 (((void *) 0), 0, (void *) &foo);
  36     }
  37 }
  38
  39 static int
  40 undefinit2 (void *problemp, unsigned long problem)
  41 {
  42   int ret, u;
  43   if (undefinit1 ())
  44     return 1;
  45   if (fn10 ())
  46     return 1;
  47   for (u = 0; u < undef6; u++)
  48     {
  49       ret = external_function1 (3 + u * 10, 10);
  50       if (ret)
  51         return ret;
  52       external_function6 (0, 0, 0, problemp + problem);
  53       return 1;
  54     }
  55 }
  56
  57 static int
  58 fn6 (struct undefinfo *uip, struct problem *problem)
  59 {
  60   unsigned long amt;
  61   if (external_function3 (((void *) 0), ((void *) 0), &amt, 0, 0))
  62     return 1;
  63   problem->l1 = (unsigned long) undefvp1;
  64   problem->l4 = uip->l1;
  65   problem->l3 = uip->l2;
  66   return 0;
  67 }
  68
  69 static int
  70 setup (void)
  71 {
  72   struct problem problem;
  73   if (fn6 (&undefinfo, &problem))
  74     return 1;
  75   if (fn2 ())
  76     return 1;
  77   if (fn4 (101))
  78     return 1;
  79   if (undefinit2 ((void *) problem.l1, problem.l3 * 4))  /* { dg-bogus "problem.l3" "uninitialized variable warning" } */
  80     return 1;
  81 }
  82
  83 int
  84 main (int argc, char **argv)
  85 {
  86   int optc;
  87   if (external_function (1))
  88     return 1;
  89   if (external_function (1))
  90     return 1;
  91   if (external_function (1))
  92     return 1;
  93   while ((optc =
  94           getopt_long (argc, argv, ((void *) 0), ((void *) 0),
  95                        ((void *) 0))) != -1)
  96     {
  97       switch (optc)
  98         {
  99         case 0:
 100           break;
 101         case 'F':
 102           external_function (1);
 103         default:
 104           return 1;
 105         }
 106     }
 107   if ((optind != 99))
 108     {
 109       return 1;
 110     }
 111   setup ();
 112 }