From 58ef7c8df5df78e0fff188f1cdc339761d1de561 Mon Sep 17 00:00:00 2001
From: cuz <cuz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sat, 27 Jul 2002 07:31:13 +0000
Subject: [PATCH] Reintroduce a patch for a bug that has been lost between
 version 1.2 and 1.3 of the vsprintf module.

git-svn-id: svn://svn.cc65.org/cc65/trunk@1372 b7a2c559-68d2-44c3-8de9-860c34a00d81
---
 libsrc/common/vsprintf.s | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/libsrc/common/vsprintf.s b/libsrc/common/vsprintf.s
index 317987807..2313900ae 100644
--- a/libsrc/common/vsprintf.s
+++ b/libsrc/common/vsprintf.s
@@ -152,10 +152,13 @@ _vsprintf:
 	tya
 	sta	(ptr1),y
 
-; Return the number of bytes written.
-
-    	lda	outdesc		; ccount
-    	ldx	outdesc+1
-	rts
-
+; Return the number of bytes written. The carry is clear here because of the
+; last addition which will never overflow for sane code.
+
+        lda     outdesc         ; ccount
+        ldx     outdesc+1
+        adc     #1              ; Account for terminator
+        bcc     @L9
+        inx
+@L9:    rts
 
-- 
2.39.5