From: uz <uz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Tue, 31 May 2011 14:51:21 +0000 (+0000)
Subject: Fixed a problem in GetSymParentScope, where an error in the assembler input
X-Git-Tag: V2.13.3~429
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=9c53f8879c926b2d3ebdccd98b83906a09f51361;p=cc65

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
---

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;