/* Emergency actions in case of a fatal signal.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003-2004 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2003.
This program is free software; you can redistribute it and/or modify
terminates the process, like removing a temporary file or killing a
subprocess that may be stuck waiting for a device, pipe or network input.
Such signals are SIGHUP, SIGINT, SIGPIPE, SIGTERM, and possibly others.
- The limitation of this facility is that it cannot work for SIGKILL. */
+ The limitation of this facility is that it cannot work for SIGKILL.
+
+ Signals with a SIG_IGN handler are considered to be non-fatal. The
+ functions in this file assume that when a SIG_IGN handler is installed
+ for a signal, it was installed before any functions in this file were
+ called and it stays so for the whole lifetime of the process. */
/* Register a cleanup function to be executed when a catchable fatal signal
occurs.