From 330e7312a3b61dc3bb7b9c970e649151ed799a23 Mon Sep 17 00:00:00 2001
From: Karl Heuer <kwzh@gnu.org>
Date: Tue, 4 Oct 1994 17:19:36 +0000
Subject: [PATCH] (validate_interval_range): Don't use XFASTINT as an lvalue.

---
 src/textprop.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/textprop.c b/src/textprop.c
index acb6d4d30c..19f469875b 100644
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -141,9 +141,9 @@ validate_interval_range (object, begin, end, force)
 	args_out_of_range (*begin, *end);
       /* User-level Positions in strings start with 0,
 	 but the interval code always wants positions starting with 1.  */
-      XFASTINT (*begin) += 1;
+      XSETFASTINT (*begin, XFASTINT (*begin) + 1);
       if (begin != end)
-	XFASTINT (*end) += 1;
+	XSETFASTINT (*end, XFASTINT (*end) + 1);
       i = s->intervals;
 
       if (s->size == 0)
-- 
2.39.2