/* Copyright (C) 1991, 1992, 1997, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <stdio.h> #include <setjmp.h> #include <stdlib.h> static jmp_buf env; static int last_value = -1, lose = 0; static void jump (int val) { longjmp (env, val); } int main (void) { int value; value = setjmp (env); if (value != last_value + 1) { fputs("Shouldn't have ", stdout); lose = 1; } last_value = value; switch (value) { case 0: puts("Saved environment."); jump (0); default: printf ("Jumped to %d.\n", value); if (value < 10) jump (value + 1); } if (!lose && value == 10) { /* Do a second test, this time without `setjmp' being a macro. This is not required by ISO C but we have this for compatibility. */ #undef setjmp extern int setjmp (jmp_buf); last_value = -1; lose = 0; value = setjmp (env); if (value != last_value + 1) { fputs("Shouldn't have ", stdout); lose = 1; } last_value = value; switch (value) { case 0: puts("Saved environment."); jump (0); default: printf ("Jumped to %d.\n", value); if (value < 10) jump (value + 1); } } if (!lose && value == 10) { /* And again for the `_setjmp' function. */ #ifndef _setjmp extern int _setjmp (jmp_buf); #endif last_value = -1; lose = 0; value = _setjmp (env); if (value != last_value + 1) { fputs("Shouldn't have ", stdout); lose = 1; } last_value = value; switch (value) { case 0: puts("Saved environment."); jump (0); default: printf ("Jumped to %d.\n", value); if (value < 10) jump (value + 1); } } if (lose || value != 10) puts ("Test FAILED!"); else puts ("Test succeeded!"); return lose ? EXIT_FAILURE : EXIT_SUCCESS; }