Comment changes.

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

diff --git a/lib/fatal-signal.c b/lib/fatal-signal.c
index ebba498..8a3a99c 100644 (file)
--- a/lib/fatal-signal.c
+++ b/lib/fatal-signal.c
@@ -1,5 +1,5 @@
 /* Emergency actions in case of a fatal signal.
-   Copyright (C) 2003-2004 Free Software Foundation, Inc.
+   Copyright (C) 2003-2004, 2006 Free Software Foundation, Inc.
    Written by Bruno Haible <bruno@clisp.org>, 2003.
 
    This program is free software; you can redistribute it and/or modify
@@ -14,12 +14,10 @@
 
    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.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+#include <config.h>
 
 /* Specification.  */
 #include "fatal-signal.h"
@@ -27,10 +25,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <signal.h>
-#include <string.h>
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <unistd.h>
 
 #include "xalloc.h"
 
@@ -77,6 +72,10 @@ static int fatal_signals[] =
 #ifdef SIGXFSZ
     SIGXFSZ,
 #endif
+    /* Woe32 signals.  */
+#ifdef SIGBREAK
+    SIGBREAK,
+#endif
     0
   };
 
@@ -90,6 +89,7 @@ init_fatal_signals (void)
   static bool fatal_signals_initialized = false;
   if (!fatal_signals_initialized)
     {
+#if HAVE_SIGACTION
       size_t i;
 
       for (i = 0; i < num_fatal_signals; i++)
@@ -100,6 +100,7 @@ init_fatal_signals (void)
              && action.sa_handler == SIG_IGN)
            fatal_signals[i] = -1;
        }
+#endif
 
       fatal_signals_initialized = true;
     }
@@ -201,12 +202,17 @@ at_fatal_signal (action_t action)
         because then the cleanup() function could access an already
         deallocated array.  */
       actions_entry_t *old_actions = actions;
+      size_t old_actions_allocated = actions_allocated;
       size_t new_actions_allocated = 2 * actions_allocated;
       actions_entry_t *new_actions =
        xmalloc (new_actions_allocated * sizeof (actions_entry_t));
+      size_t k;
 
-      memcpy (new_actions, old_actions,
-             actions_allocated * sizeof (actions_entry_t));
+      /* Don't use memcpy() here, because memcpy takes non-volatile arguments
+        and is therefore not guaranteed to complete all memory stores before
+        the next statement.  */
+      for (k = 0; k < old_actions_allocated; k++)
+       new_actions[k] = old_actions[k];
       actions = new_actions;
       actions_allocated = new_actions_allocated;
       /* Now we can free the old actions array.  */