From de1f80571aa0d4c45fbcc67b184d70da65bee0a3 Mon Sep 17 00:00:00 2001
From: Greg King <gregdk@users.sf.net>
Date: Tue, 31 Oct 2017 00:45:17 -0400
Subject: [PATCH] Fixed the way that the disassembler looks for the end of a
 segment.

It checks only the bytes that actually were printed.  It won't show a bad error message when disassembling address $0000.  Fixes #506 on cc65's Github project.
---
 src/da65/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/da65/main.c b/src/da65/main.c
index 0b0bf19e7..1454d01fb 100644
--- a/src/da65/main.c
+++ b/src/da65/main.c
@@ -350,6 +350,7 @@ static void OneOpcode (unsigned RemainingBytes)
 /* Disassemble one opcode */
 {
     unsigned I;
+    unsigned OldPC = PC;
 
     /* Get the opcode from the current address */
     unsigned char OPC = GetCodeByte (PC);
@@ -476,7 +477,7 @@ static void OneOpcode (unsigned RemainingBytes)
     /* Change back to the default CODE segment if
     ** a named segment stops at the current address.
     */
-    for (I = D->Size; I >= 1; --I) {
+    for (I = PC - OldPC; I > 0; --I) {
         if (IsSegmentEnd (PC - I)) {
             EndSegment ();
             break;