md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT

[gnulib.git] / lib / fatal-signal.h

diff --git a/lib/fatal-signal.h b/lib/fatal-signal.h
index 16e4f72..f5df78a 100644 (file)
--- a/lib/fatal-signal.h
+++ b/lib/fatal-signal.h
@@ -1,11 +1,11 @@
 /* Emergency actions in case of a fatal signal.
-   Copyright (C) 2003 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2009-2013 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
-   This program is free software; you can redistribute it and/or modify
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -13,8 +13,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 
 #ifdef __cplusplus
@@ -26,7 +25,12 @@ extern "C" {
    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.