More verbose output when unhandled exception occurs

[Uwe Bonnes]

Changelog:
	dlls/kernel/except.c: start_debugger
	Decode and print the exception for the WARN message

The WARN is often posted (google gives about 13.600 hits for
"wine: Unhandled exception"). The cause of the exception should be printed
in that context too... 
-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
Index: wine/dlls/kernel/except.c
===================================================================
RCS file: /home/wine/wine/dlls/kernel/except.c,v
retrieving revision 1.14
diff -u -r1.14 except.c
--- wine/dlls/kernel/except.c	4 Oct 2005 18:14:22 -0000	1.14
+++ wine/dlls/kernel/except.c	2 Nov 2005 13:48:02 -0000
@@ -89,7 +89,7 @@
 /*******************************************************************
  *         format_exception_msg
  */
-static int format_exception_msg( const EXCEPTION_POINTERS *ptr, char *buffer, int size )
+static int format_exception_msg( const EXCEPTION_POINTERS *ptr, char *buffer, int size , int do_ask)
 {
     const EXCEPTION_RECORD *rec = ptr->ExceptionRecord;
     int len,len2;
@@ -159,17 +159,22 @@
     }
     if ((len<0) || (len>=size))
         return -1;
+    if(do_ask)
+    {
 #ifdef __i386__
-    if (ptr->ContextRecord->SegCs != wine_get_cs())
-        len2 = snprintf(buffer+len, size-len,
-                        " at address 0x%04lx:0x%08lx.\nDo you wish to debug it ?",
-                        ptr->ContextRecord->SegCs,
-                        (DWORD)ptr->ExceptionRecord->ExceptionAddress);
-    else
+        if (ptr->ContextRecord->SegCs != wine_get_cs())
+            len2 = snprintf(buffer+len, size-len,
+                            " at address 0x%04lx:0x%08lx.\nDo you wish to debug it ?",
+                            ptr->ContextRecord->SegCs,
+                            (DWORD)ptr->ExceptionRecord->ExceptionAddress);
+        else
 #endif
-        len2 = snprintf(buffer+len, size-len,
-                        " at address %p.\nDo you wish to debug it ?",
-                        ptr->ExceptionRecord->ExceptionAddress);
+            len2 = snprintf(buffer+len, size-len,
+                            " at address %p.\nDo you wish to debug it ?",
+                            ptr->ExceptionRecord->ExceptionAddress);
+    }
+    else
+        len2=0;
     if ((len2<0) || (len>=size-len))
         return -1;
     return len+len2;
@@ -229,6 +234,7 @@
     char*		format = NULL;
     BOOL		ret = FALSE;
 
+    char ebuffer[256];
     static const WCHAR AeDebugW[] = {'M','a','c','h','i','n','e','\\',
                                      'S','o','f','t','w','a','r','e','\\',
                                      'M','i','c','r','o','s','o','f','t','\\',
@@ -238,7 +244,8 @@
     static const WCHAR DebuggerW[] = {'D','e','b','u','g','g','e','r',0};
     static const WCHAR AutoW[] = {'A','u','t','o',0};
 
-    MESSAGE("wine: Unhandled exception (thread %04lx), starting debugger...\n", GetCurrentThreadId());
+    format_exception_msg( epointers, ebuffer, sizeof(ebuffer) , FALSE);
+    MESSAGE("wine: Unhandled exception:\"%s\" (thread %04lx), starting debugger...\n", ebuffer, GetCurrentThreadId());
 
     attr.Length = sizeof(attr);
     attr.RootDirectory = 0;
@@ -322,7 +329,7 @@
 	if (pMessageBoxA)
 	{
 	    char buffer[256];
-	    format_exception_msg( epointers, buffer, sizeof(buffer) );
+	    format_exception_msg( epointers, buffer, sizeof(buffer) , TRUE);
 	    if (pMessageBoxA( 0, buffer, "Exception raised", MB_YESNO | MB_ICONHAND ) == IDNO)
 	    {
 		TRACE("Killing process\n");