From 53418727e9ce2aae5b87503f5f8b0d0d15eab267 Mon Sep 17 00:00:00 2001
From: helixhorned <helixhorned@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Mon, 3 Aug 2009 22:15:53 +0000
Subject: [PATCH] little debugging helper for linux

git-svn-id: https://svn.eduke32.com/eduke32@1485 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/src/sdlayer.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/polymer/eduke32/build/src/sdlayer.c b/polymer/eduke32/build/src/sdlayer.c
index 55d320695..d8d1a4d77 100644
--- a/polymer/eduke32/build/src/sdlayer.c
+++ b/polymer/eduke32/build/src/sdlayer.c
@@ -6,6 +6,7 @@
 
 #include <stdlib.h>
 #include <math.h>
+#include <signal.h>
 #include "sdl_inc.h"
 #include "compat.h"
 #include "sdlayer.h"
@@ -224,6 +225,20 @@ void setvsync(int32_t sync)
 }
 #endif
 
+static void attach_debugger_here(void){}
+
+static void sighandler(int signum)
+{
+    if (signum==SIGSEGV)
+    {
+        SDL_WM_GrabInput(SDL_GRAB_OFF);
+        SDL_ShowCursor(SDL_ENABLE);
+        attach_debugger_here();
+        uninitsystem();
+        exit(1);
+    }
+}
+
 //
 // initsystem() -- init SDL systems
 //
@@ -262,6 +277,8 @@ int32_t initsystem(void)
         return -1;
     }
 
+    signal(SIGSEGV, sighandler);
+
     atexit(uninitsystem);
 
     frameplace = 0;