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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /setjmp/tst-setjmp.c
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initial import
Diffstat (limited to 'setjmp/tst-setjmp.c')
-rw-r--r--setjmp/tst-setjmp.c61
1 files changed, 61 insertions, 0 deletions
diff --git a/setjmp/tst-setjmp.c b/setjmp/tst-setjmp.c
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+/* Copyright (C) 1991, 1992 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 Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include <stdlib.h>
+
+static jmp_buf env;
+static int last_value = -1, lose = 0;
+
+void
+DEFUN(jump, (val), int val)
+{
+  longjmp(env, val);
+}
+
+int
+DEFUN_VOID(main)
+{
+  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)
+    puts("Test FAILED!");
+  else
+    puts("Test succeeded!");
+  exit(lose ? EXIT_FAILURE : EXIT_SUCCESS);
+}