Improve stack trace code.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@25681 72102866-910b-0410-8b05-ffd578937521

Headers/Foundation/NSException.h

@@ -83,9 +83,10 @@ extern "C" {
 */
 @interface NSException : NSObject <NSCoding, NSCopying>
 {    
+@private
   NSString *_e_name;
   NSString *_e_reason;
-  NSDictionary *_e_info;
+  void *_reserved;
 }
 
 /**
@@ -116,6 +117,14 @@ extern "C" {
 	format: (NSString*)format
      arguments: (va_list)argList;
 
+#if OS_API_VERSION(100500,GS_API_LATEST) && GS_API_VERSION(011501,GS_API_LATEST)
+/** Returns an array of the call stack return addresses at the point when
+ * the exception was raised.  Re-raising the exception does not change
+ * this value.
+ */
+- (NSArray*) callStackReturnAddresses;
+#endif
+
 /**
  * <init/>Initializes a newly allocated NSException object with a
  * name, reason and a dictionary userInfo.