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+To: vim_dev@googlegroups.com
+Subject: Patch 7.4.022
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.4.022
+Problem: Deadlock while exiting, because of allocating memory.
+Solution: Do not use gettext() in deathtrap(). (James McCoy)
+Files: src/os_unix.c, src/misc1.c
+
+
+*** ../vim-7.4.021/src/os_unix.c 2013-07-03 16:32:32.000000000 +0200
+--- src/os_unix.c 2013-09-05 21:40:06.000000000 +0200
+***************
+*** 957,964 ****
+
+ /*
+ * This function handles deadly signals.
+! * It tries to preserve any swap file and exit properly.
+ * (partly from Elvis).
+ */
+ static RETSIGTYPE
+ deathtrap SIGDEFARG(sigarg)
+--- 957,966 ----
+
+ /*
+ * This function handles deadly signals.
+! * It tries to preserve any swap files and exit properly.
+ * (partly from Elvis).
++ * NOTE: Avoid unsafe functions, such as allocating memory, they can result in
++ * a deadlock.
+ */
+ static RETSIGTYPE
+ deathtrap SIGDEFARG(sigarg)
+***************
+*** 1090,1107 ****
+ }
+ if (entered == 2)
+ {
+! OUT_STR(_("Vim: Double signal, exiting\n"));
+ out_flush();
+ getout(1);
+ }
+
+ #ifdef SIGHASARG
+! sprintf((char *)IObuff, _("Vim: Caught deadly signal %s\n"),
+ signal_info[i].name);
+ #else
+! sprintf((char *)IObuff, _("Vim: Caught deadly signal\n"));
+ #endif
+! preserve_exit(); /* preserve files and exit */
+
+ #ifdef NBDEBUG
+ reset_signals();
+--- 1092,1114 ----
+ }
+ if (entered == 2)
+ {
+! /* No translation, it may call malloc(). */
+! OUT_STR("Vim: Double signal, exiting\n");
+ out_flush();
+ getout(1);
+ }
+
++ /* No translation, it may call malloc(). */
+ #ifdef SIGHASARG
+! sprintf((char *)IObuff, "Vim: Caught deadly signal %s\n",
+ signal_info[i].name);
+ #else
+! sprintf((char *)IObuff, "Vim: Caught deadly signal\n");
+ #endif
+!
+! /* Preserve files and exit. This sets the really_exiting flag to prevent
+! * calling free(). */
+! preserve_exit();
+
+ #ifdef NBDEBUG
+ reset_signals();
+*** ../vim-7.4.021/src/misc1.c 2013-08-03 17:29:33.000000000 +0200
+--- src/misc1.c 2013-09-05 21:34:04.000000000 +0200
+***************
+*** 9174,9179 ****
+--- 9174,9181 ----
+ /*
+ * Preserve files and exit.
+ * When called IObuff must contain a message.
++ * NOTE: This may be called from deathtrap() in a signal handler, avoid unsafe
++ * functions, such as allocating memory.
+ */
+ void
+ preserve_exit()
+***************
+*** 9196,9202 ****
+ {
+ if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL)
+ {
+! OUT_STR(_("Vim: preserving files...\n"));
+ screen_start(); /* don't know where cursor is now */
+ out_flush();
+ ml_sync_all(FALSE, FALSE); /* preserve all swap files */
+--- 9198,9204 ----
+ {
+ if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL)
+ {
+! OUT_STR("Vim: preserving files...\n");
+ screen_start(); /* don't know where cursor is now */
+ out_flush();
+ ml_sync_all(FALSE, FALSE); /* preserve all swap files */
+***************
+*** 9206,9212 ****
+
+ ml_close_all(FALSE); /* close all memfiles, without deleting */
+
+! OUT_STR(_("Vim: Finished.\n"));
+
+ getout(1);
+ }
+--- 9208,9214 ----
+
+ ml_close_all(FALSE); /* close all memfiles, without deleting */
+
+! OUT_STR("Vim: Finished.\n");
+
+ getout(1);
+ }
+*** ../vim-7.4.021/src/version.c 2013-09-05 21:15:38.000000000 +0200
+--- src/version.c 2013-09-05 21:30:18.000000000 +0200
+***************
+*** 740,741 ****
+--- 740,743 ----
+ { /* Add new patch number below this line */
++ /**/
++ 22,
+ /**/
+
+--
+hundred-and-one symptoms of being an internet addict:
+175. You send yourself e-mail before you go to bed to remind you
+ what to do when you wake up.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net \\\
+/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\ an exciting new programming language -- http://www.Zimbu.org ///
+ \\\ help me help AIDS victims -- http://ICCF-Holland.org ///