From 9c53f8879c926b2d3ebdccd98b83906a09f51361 Mon Sep 17 00:00:00 2001
From: uz <uz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Tue, 31 May 2011 14:51:21 +0000
Subject: [PATCH] Fixed a problem in GetSymParentScope, where an error in the
 assembler input somewhere before could lead to an invalid memory access.

git-svn-id: svn://svn.cc65.org/cc65/trunk@5031 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 src/ca65/symentry.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/ca65/symentry.c b/src/ca65/symentry.c
index 999ae32f8..763820731 100644
--- a/src/ca65/symentry.c
+++ b/src/ca65/symentry.c
@@ -627,6 +627,11 @@ SymTable* GetSymParentScope (SymEntry* S)
     if ((S->Flags & SF_LOCAL) != 0) {
         /* This is a cheap local symbol */
         return 0;
+    } else if (S->Sym.Tab == 0) {
+        /* Symbol not in a table. This may happen if there have been errors
+         * before. Return NULL in this case to avoid further errors.
+         */
+        return 0;
     } else {
         /* This is a global symbol */
         return S->Sym.Tab->Parent;
-- 
2.39.5