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authorSebastien Helleu <flashcode@flashtux.org>2006-05-19 22:49:24 +0000
committerSebastien Helleu <flashcode@flashtux.org>2006-05-19 22:49:24 +0000
commit15f75d157c6ec6118f7800a433c13e2347632b92 (patch)
tree1740a4ff8851ed72397b0aaeff446e1b2f484305 /src/common
parent7e802070ca0cc4f06ee1cbec590ba87261d0f3e0 (diff)
downloadweechat-15f75d157c6ec6118f7800a433c13e2347632b92.zip
Added backtrace when WeeChat crashes
Diffstat (limited to 'src/common')
-rw-r--r--src/common/Makefile.am2
-rw-r--r--src/common/backtrace.c136
-rw-r--r--src/common/backtrace.h28
-rw-r--r--src/common/weechat.c25
4 files changed, 186 insertions, 5 deletions
diff --git a/src/common/Makefile.am b/src/common/Makefile.am
index 1e84078ec..78d82d531 100644
--- a/src/common/Makefile.am
+++ b/src/common/Makefile.am
@@ -21,6 +21,8 @@ noinst_LIBRARIES = lib_weechat_main.a
lib_weechat_main_a_SOURCES = weechat.c \
weechat.h \
+ backtrace.c \
+ backtrace.h \
command.c \
command.h \
completion.c \
diff --git a/src/common/backtrace.c b/src/common/backtrace.c
new file mode 100644
index 000000000..9c67c2f40
--- /dev/null
+++ b/src/common/backtrace.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2003-2006 by FlashCode <flashcode@flashtux.org>
+ * See README for License detail, AUTHORS for developers list.
+ *
+ * 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 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* backtrace.c: display backtrace after a segfault */
+
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#define __USE_GNU
+#include <dlfcn.h>
+
+#ifdef HAVE_BACKTRACE
+#include <execinfo.h>
+#endif
+
+#include "weechat.h"
+#include "backtrace.h"
+
+
+/*
+ * weechat_backtrace_addr2line: display function name and line with a backtrace address
+ */
+
+void
+weechat_backtrace_addr2line (int number, void *address, char *symbol)
+{
+ int rc;
+ Dl_info info;
+ const void *addr;
+ FILE *output;
+ char cmd_line[1024];
+ char line[1024], *ptr_line, *pos;
+ char function_name[1024];
+ int file_line;
+
+ rc = dladdr (address, &info);
+ if ((rc == 0) || !info.dli_fname || !info.dli_fname[0])
+ {
+ fprintf (stderr, "%03d %s\n", number, symbol);
+ return;
+ }
+
+ addr = address;
+ if (info.dli_fbase >= (const void *) 0x40000000)
+ addr = (const char *) addr - (unsigned int) info.dli_fbase;
+
+ snprintf (cmd_line, sizeof (cmd_line),
+ "addr2line --functions --demangle -e %s %p",
+ info.dli_fname, addr);
+ output = popen (cmd_line, "r");
+ if (!output)
+ {
+ fprintf (stderr, "%03d %s\n", number, symbol);
+ return;
+ }
+ function_name[0] = '\0';
+ file_line = 0;
+ while (!feof (output))
+ {
+ ptr_line = fgets (line, sizeof (line) - 1, output);
+ if (ptr_line && ptr_line[0])
+ {
+ pos = strchr (ptr_line, '\n');
+ if (pos)
+ pos[0] = '\0';
+ if (strchr (ptr_line, ':'))
+ {
+ file_line = 1;
+ fprintf (stderr, "%03d %s%s%s%s\n",
+ number,
+ ptr_line,
+ (function_name[0]) ? " [function " : "",
+ function_name,
+ (function_name[0]) ? "]" : "");
+ function_name[0] = '\0';
+ }
+ else
+ {
+ if (function_name[0])
+ fprintf (stderr, "%03d %s", number, function_name);
+ snprintf (function_name, sizeof (function_name),
+ "%s", ptr_line);
+ }
+ }
+ }
+ if (function_name[0])
+ fprintf (stderr, "%03d %s\n", number, function_name);
+ pclose (output);
+}
+
+/*
+ * weechat_backtrace: display backtrace (called when a SIGSEGV is received)
+ */
+
+void
+weechat_backtrace ()
+{
+#ifdef HAVE_BACKTRACE
+ void *trace[BACKTRACE_MAX];
+ int trace_size, i;
+ char **symbols;
+
+ trace_size = backtrace (trace, BACKTRACE_MAX);
+ symbols = backtrace_symbols (trace, trace_size);
+
+ for (i = 0; i < trace_size; i++)
+ {
+ weechat_backtrace_addr2line (i + 1, trace[i], symbols[i]);
+ }
+#else
+ fprintf (stderr,
+ " No backtrace info (no debug info available or no backtrace possible "
+ "on your system).\n");
+#endif
+}
diff --git a/src/common/backtrace.h b/src/common/backtrace.h
new file mode 100644
index 000000000..67e3751dc
--- /dev/null
+++ b/src/common/backtrace.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2003-2006 by FlashCode <flashcode@flashtux.org>
+ * See README for License detail, AUTHORS for developers list.
+ *
+ * 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 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
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef __WEECHAT_BACKTACE_H
+#define __WEECHAT_BACKTACE_H 1
+
+#define BACKTRACE_MAX 128
+
+extern void weechat_backtrace ();
+
+#endif /* backtrace.h */
diff --git a/src/common/weechat.c b/src/common/weechat.c
index 8a69facdb..f82a622e7 100644
--- a/src/common/weechat.c
+++ b/src/common/weechat.c
@@ -62,6 +62,7 @@
#endif
#include "weechat.h"
+#include "backtrace.h"
#include "weeconfig.h"
#include "command.h"
#include "fifo.h"
@@ -1075,12 +1076,26 @@ weechat_sigsegv ()
dcc_end ();
server_free_all ();
gui_main_end ();
+
fprintf (stderr, "\n");
- fprintf (stderr, "*** Very bad! WeeChat has crashed (SIGSEGV received)\n");
- fprintf (stderr, "*** Full crash dump was saved to %s/weechat.log file\n", weechat_home);
- fprintf (stderr, "*** Please send this file to WeeChat developers.\n");
- fprintf (stderr, "*** (be careful, private info may be in this file since\n");
- fprintf (stderr, "*** part of chats are displayed, so remove lines if needed)\n\n");
+ fprintf (stderr, "*** Very bad! WeeChat is crashing (SIGSEGV received)\n");
+ fprintf (stderr, "*** (%s, compiled on %s %s)\n",
+ PACKAGE_STRING, __DATE__, __TIME__);
+ fprintf (stderr, "*** Full crash dump was saved to %s/weechat.log file.\n",
+ weechat_home);
+ fprintf (stderr, "***\n");
+ fprintf (stderr, "*** Please help WeeChat developers to fix this bug:\n");
+ fprintf (stderr, "*** 1. if you have a core file, please run: gdb weechat-curses core\n");
+ fprintf (stderr, "*** then issue \"bt\" command and send result to developers\n");
+ fprintf (stderr, "*** 2. otherwise send backtrace displayed below and weechat.log\n");
+ fprintf (stderr, "*** (be careful, private info may be in this file since\n");
+ fprintf (stderr, "*** part of chats are displayed, so remove lines if needed)\n\n");
+
+ fprintf (stderr, "======= WeeChat backtrace =======\n");
+ weechat_backtrace ();
+ fprintf (stderr, "======= End of backtrace =======\n");
+
+ /* shutdown with error code */
weechat_shutdown (EXIT_FAILURE, 1);
}