setjmp/bug269-setjmp.c

   1 /* Copyright (C) 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */ ;
  18
  19 /* Test case for Bugzilla # 269 */
  20
  21 #include <stdio.h>
  22 #include <setjmp.h>
  23 #include <stdlib.h>
  24
  25 jmp_buf buf1;
  26 jmp_buf buf2;
  27 int *p;
  28 int n_x = 6;
  29
  30 static int g_counter = 0;
  31
  32 int
  33 f (void)
  34 {
  35   static int counter = 0;
  36   static int way_point1 = 3;
  37   static int way_point2 = 2;
  38   int lose = 0;
  39
  40   if (setjmp (buf1) != 101)
  41     {
  42       int a[n_x];               /* reallocate stack space */
  43       g_counter++;
  44       p = &a[0];
  45       if (g_counter < 5)
  46         longjmp (buf1, 2);
  47       else if (g_counter == 5)
  48         longjmp (buf1, 101);
  49       else
  50         {
  51           _setjmp (buf2);
  52           _longjmp (buf1, 101);
  53         }
  54     }
  55
  56   way_point1--;
  57
  58   if (counter == 0)
  59     {
  60       counter++;
  61       {
  62         int a[n_x];             /* reallocate stack space */
  63         g_counter++;
  64         p = &a[0];
  65         if (g_counter < 5)
  66           longjmp (buf1, 2);
  67         else if (g_counter == 5)
  68           longjmp (buf1, 101);
  69         else
  70           {
  71             _setjmp (buf2);
  72             _longjmp (buf1, 101);
  73           }
  74       }
  75     }
  76
  77   way_point2--;
  78
  79   if (counter == 1)
  80     {
  81       counter++;
  82       longjmp (buf2, 2);
  83     }
  84
  85   lose = !(way_point1 == 0 && way_point2 == 0
  86            && g_counter == 6 && counter == 2);
  87
  88   return lose;
  89 }
  90
  91 static int
  92 do_test (void)
  93 {
  94   int lose;
  95
  96   lose = f ();
  97
  98   if (lose)
  99     puts ("Test FAILED!");
 100   else
 101     puts ("Test succeeded!");
 102
 103   return lose ? EXIT_FAILURE : EXIT_SUCCESS;
 104 }
 105
 106 #define TEST_FUNCTION do_test ()
 107 #include "../test-skeleton.c"