initial import

1 files changed, 32 insertions, 0 deletions

diff --git a/manual/examples/setjmp.c b/manual/examples/setjmp.c
new file mode 100644
index 0000000000..023339c602
--- /dev/null
+++ b/manual/examples/setjmp.c
@@ -0,0 +1,32 @@
+#include <setjmp.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+jmp_buf main_loop;
+
+void 
+abort_to_main_loop (int status)
+{
+  longjmp (main_loop, status);
+}
+
+int
+main (void)
+{
+  while (1)
+    if (setjmp (main_loop))
+      puts ("Back at main loop....");
+    else
+      do_command ();
+}
+
+
+void 
+do_command (void)
+{
+  char buffer[128];
+  if (fgets (buffer, 128, stdin) == NULL)
+    abort_to_main_loop (-1);
+  else
+    exit (EXIT_SUCCESS);
+}