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