# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1276371593 -7200
# Node ID 3851a63280ff19aaabfd2cca1fd58ae13478aa45
# Parent  b8c6ae7387238c96eb1dc2921a8a60287255a42d
Fixed overwriting of exception source details.

diff -r b8c6ae738723 -r 3851a63280ff micropython/common.py
--- a/micropython/common.py	Sat Jun 12 21:33:36 2010 +0200
+++ b/micropython/common.py	Sat Jun 12 21:39:53 2010 +0200
@@ -36,8 +36,9 @@
         try:
             return compiler.visitor.ASTVisitor.dispatch(self, node, *args)
         except NodeProcessingError, exc:
-            exc.astnode = node
-            exc.unit_name = self.full_name()
+            if exc.astnode is None:
+                exc.astnode = node
+                exc.unit_name = self.full_name()
             raise
 
 # Errors.