mirror of
https://github.com/weechat/weechat.git
synced 2026-07-10 03:33:12 +02:00
Added backtrace when WeeChat crashes
This commit is contained in:
Sebastien Helleu
@@ -21,6 +21,8 @@ noinst_LIBRARIES = lib_weechat_main.a
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lib_weechat_main_a_SOURCES = weechat.c \
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weechat.h \
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backtrace.c \
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backtrace.h \
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command.c \
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command.h \
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completion.c \
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@@ -0,0 +1,136 @@
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/*
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* Copyright (c) 2003-2006 by FlashCode <flashcode@flashtux.org>
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* See README for License detail, AUTHORS for developers list.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* backtrace.c: display backtrace after a segfault */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#define __USE_GNU
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#include <dlfcn.h>
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#ifdef HAVE_BACKTRACE
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#include <execinfo.h>
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#endif
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#include "weechat.h"
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#include "backtrace.h"
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/*
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* weechat_backtrace_addr2line: display function name and line with a backtrace address
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*/
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void
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weechat_backtrace_addr2line (int number, void *address, char *symbol)
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{
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int rc;
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Dl_info info;
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const void *addr;
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FILE *output;
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char cmd_line[1024];
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char line[1024], *ptr_line, *pos;
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char function_name[1024];
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int file_line;
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rc = dladdr (address, &info);
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if ((rc == 0) || !info.dli_fname || !info.dli_fname[0])
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{
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fprintf (stderr, "%03d %s\n", number, symbol);
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return;
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}
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addr = address;
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if (info.dli_fbase >= (const void *) 0x40000000)
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addr = (const char *) addr - (unsigned int) info.dli_fbase;
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snprintf (cmd_line, sizeof (cmd_line),
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"addr2line --functions --demangle -e %s %p",
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info.dli_fname, addr);
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output = popen (cmd_line, "r");
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if (!output)
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{
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fprintf (stderr, "%03d %s\n", number, symbol);
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return;
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}
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function_name[0] = '\0';
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file_line = 0;
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while (!feof (output))
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{
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ptr_line = fgets (line, sizeof (line) - 1, output);
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if (ptr_line && ptr_line[0])
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{
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pos = strchr (ptr_line, '\n');
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if (pos)
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pos[0] = '\0';
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if (strchr (ptr_line, ':'))
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{
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file_line = 1;
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fprintf (stderr, "%03d %s%s%s%s\n",
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number,
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ptr_line,
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(function_name[0]) ? " [function " : "",
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function_name,
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(function_name[0]) ? "]" : "");
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function_name[0] = '\0';
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}
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else
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{
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if (function_name[0])
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fprintf (stderr, "%03d %s", number, function_name);
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snprintf (function_name, sizeof (function_name),
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"%s", ptr_line);
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}
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}
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}
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if (function_name[0])
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fprintf (stderr, "%03d %s\n", number, function_name);
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pclose (output);
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}
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/*
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* weechat_backtrace: display backtrace (called when a SIGSEGV is received)
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*/
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void
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weechat_backtrace ()
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{
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#ifdef HAVE_BACKTRACE
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void *trace[BACKTRACE_MAX];
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int trace_size, i;
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char **symbols;
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trace_size = backtrace (trace, BACKTRACE_MAX);
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symbols = backtrace_symbols (trace, trace_size);
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for (i = 0; i < trace_size; i++)
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{
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weechat_backtrace_addr2line (i + 1, trace[i], symbols[i]);
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}
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#else
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fprintf (stderr,
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" No backtrace info (no debug info available or no backtrace possible "
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"on your system).\n");
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#endif
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}
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@@ -0,0 +1,28 @@
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/*
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* Copyright (c) 2003-2006 by FlashCode <flashcode@flashtux.org>
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* See README for License detail, AUTHORS for developers list.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __WEECHAT_BACKTACE_H
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#define __WEECHAT_BACKTACE_H 1
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#define BACKTRACE_MAX 128
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extern void weechat_backtrace ();
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#endif /* backtrace.h */
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+20
-5
@@ -62,6 +62,7 @@
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#endif
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#include "weechat.h"
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#include "backtrace.h"
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#include "weeconfig.h"
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#include "command.h"
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#include "fifo.h"
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@@ -1075,12 +1076,26 @@ weechat_sigsegv ()
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dcc_end ();
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server_free_all ();
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gui_main_end ();
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fprintf (stderr, "\n");
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fprintf (stderr, "*** Very bad! WeeChat has crashed (SIGSEGV received)\n");
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fprintf (stderr, "*** Full crash dump was saved to %s/weechat.log file\n", weechat_home);
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fprintf (stderr, "*** Please send this file to WeeChat developers.\n");
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fprintf (stderr, "*** (be careful, private info may be in this file since\n");
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fprintf (stderr, "*** part of chats are displayed, so remove lines if needed)\n\n");
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fprintf (stderr, "*** Very bad! WeeChat is crashing (SIGSEGV received)\n");
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fprintf (stderr, "*** (%s, compiled on %s %s)\n",
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PACKAGE_STRING, __DATE__, __TIME__);
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fprintf (stderr, "*** Full crash dump was saved to %s/weechat.log file.\n",
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weechat_home);
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fprintf (stderr, "***\n");
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fprintf (stderr, "*** Please help WeeChat developers to fix this bug:\n");
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fprintf (stderr, "*** 1. if you have a core file, please run: gdb weechat-curses core\n");
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fprintf (stderr, "*** then issue \"bt\" command and send result to developers\n");
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fprintf (stderr, "*** 2. otherwise send backtrace displayed below and weechat.log\n");
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fprintf (stderr, "*** (be careful, private info may be in this file since\n");
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fprintf (stderr, "*** part of chats are displayed, so remove lines if needed)\n\n");
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fprintf (stderr, "======= WeeChat backtrace =======\n");
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weechat_backtrace ();
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fprintf (stderr, "======= End of backtrace =======\n");
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/* shutdown with error code */
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weechat_shutdown (EXIT_FAILURE, 1);
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}
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