From 1e672a316972e6f065b75143f4859e1dcafd3633 Mon Sep 17 00:00:00 2001
From: uz <uz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Thu, 7 Aug 2008 22:22:58 +0000
Subject: [PATCH] Fixed a bug: The op= operators (+=, -=, etc.) worked on const
 qualified objects.

git-svn-id: svn://svn.cc65.org/cc65/trunk@3883 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 src/cc65/expr.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/cc65/expr.c b/src/cc65/expr.c
index a9e0bee54..daf1e2abe 100644
--- a/src/cc65/expr.c
+++ b/src/cc65/expr.c
@@ -2777,6 +2777,11 @@ static void opeq (const GenDesc* Gen, ExprDesc* Expr)
      	return;
     }
 
+    /* The left side must not be const qualified */
+    if (IsQualConst (Expr->Type)) {
+    	Error ("Assignment to const");
+    }
+
     /* There must be an integer or pointer on the left side */
     if (!IsClassInt (Expr->Type) && !IsTypePtr (Expr->Type)) {
         Error ("Invalid left operand type");
@@ -2875,6 +2880,11 @@ static void addsubeq (const GenDesc* Gen, ExprDesc *Expr)
      	return;
     }
 
+    /* The left side must not be const qualified */
+    if (IsQualConst (Expr->Type)) {
+    	Error ("Assignment to const");
+    }
+
     /* There must be an integer or pointer on the left side */
     if (!IsClassInt (Expr->Type) && !IsTypePtr (Expr->Type)) {
         Error ("Invalid left operand type");
-- 
2.39.5