From cbee2fb7cb04fbaa24769d5d172781241b75f2c4 Mon Sep 17 00:00:00 2001
From: driAn <adrian26ch@yahoo.de>
Date: Thu, 16 Oct 2008 21:31:48 +0000
Subject: [PATCH] catch SIGSEGV and other signals on Linux to print stacktrace
 when crashing, don't strip bins on compilation

git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@3075 e016b1c5-ed68-44aa-a2f7-31cac88cffde
---
 source/src/Makefile  |  6 +++---
 source/src/pch.h     |  2 ++
 source/src/tools.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 45 insertions(+), 3 deletions(-)

diff --git a/source/src/Makefile b/source/src/Makefile
index 7615a326..cb08208f 100644
--- a/source/src/Makefile
+++ b/source/src/Makefile
@@ -1,6 +1,6 @@
 CXXOPTFLAGS=-O3 -fomit-frame-pointer
 INCLUDES=-I/usr/X11R6/include -I../enet/include -I../src `sdl-config --cflags`
-CXXFLAGS=$(CXXOPTFLAGS) $(INCLUDES) -fsigned-char -Wall -Wno-deprecated
+CXXFLAGS=$(CXXOPTFLAGS) $(INCLUDES) -fsigned-char -Wall -Wno-deprecated -rdynamic
 
 PLATFORM_PREFIX=native
 CLIENT_LIBS=-L/usr/X11R6/lib -L../enet -lenet `sdl-config --libs` -lSDL_image -lz -lGL -lGLU -lopenal -lvorbisfile
@@ -80,5 +80,5 @@ server: $(SERVER_FILES)
 install: all
 	cp ac_client ../../bin_unix/$(PLATFORM_PREFIX)_client
 	cp ac_server ../../bin_unix/$(PLATFORM_PREFIX)_server
-	strip ../../bin_unix/$(PLATFORM_PREFIX)_client
-	strip ../../bin_unix/$(PLATFORM_PREFIX)_server
+#	strip ../../bin_unix/$(PLATFORM_PREFIX)_client
+#	strip ../../bin_unix/$(PLATFORM_PREFIX)_server
diff --git a/source/src/pch.h b/source/src/pch.h
index 8611cc48..b5c44cfd 100644
--- a/source/src/pch.h
+++ b/source/src/pch.h
@@ -17,6 +17,8 @@
 #include <limits.h>
 #ifdef __GNUC__
 #include <new>
+#include <execinfo.h>
+#include <signal.h>
 #else
 #include <new.h>
 #endif
diff --git a/source/src/tools.cpp b/source/src/tools.cpp
index 4e2fd492..a2becfc6 100644
--- a/source/src/tools.cpp
+++ b/source/src/tools.cpp
@@ -329,8 +329,48 @@ void stackdumper(unsigned int type, EXCEPTION_POINTERS *ep)
     }
     fatal(out);
 }
+#elif !defined(WIN32) && defined(__GNUC__)
+
+// stack dumping on linux, inspired by Sachin Agrawal's sample code
+
+struct signalbinder
+{
+    static void stackdumper(int sig)
+    {
+        printf("stacktrace:\n");
+
+        const int BTSIZE = 25;
+        void *array[BTSIZE];
+        int n = backtrace(array, BTSIZE);
+        char **symbols = backtrace_symbols(array, n);
+        for(int i = 0; i < n; i++)
+        {
+            printf("%s\n", symbols[i]);
+        }
+        free(symbols);
+
+        fatal("AssaultCube error (%d)", sig);
+
+    }
+
+    signalbinder()
+    {
+        // register signals to dump the stack if they are raised,
+        // use constructor for early registering
+        signal(SIGSEGV, stackdumper);
+        signal(SIGFPE, stackdumper);
+        signal(SIGILL, stackdumper);
+        signal(SIGBUS, stackdumper);
+        signal(SIGSYS, stackdumper);
+        signal(SIGABRT, stackdumper);
+    }
+};
+
+signalbinder sigbinder;
+
 #endif
 
+
 ///////////////////////// misc tools ///////////////////////
 
 bool cmpb(void *b, int n, enet_uint32 c)