From 4f8838651150ab8175803b2c338dfa93959320e1 Mon Sep 17 00:00:00 2001
From: ailin-nemui <ailin-nemui@users.noreply.github.com>
Date: Wed, 10 Feb 2021 10:59:39 +0100
Subject: [PATCH] Merge pull request #1269 from ihsinme/patch-1

fix invalid unsigned arithmetic.

(cherry picked from commit 0dd60755f0428cbc8042a421dfdd4c6ea5c392cf)
---
 src/fe-text/gui-entry.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/fe-text/gui-entry.c b/src/fe-text/gui-entry.c
index eab3d4ca..a3cb3ec5 100644
--- a/src/fe-text/gui-entry.c
+++ b/src/fe-text/gui-entry.c
@@ -835,8 +835,8 @@ void gui_entry_erase(GUI_ENTRY_REC *entry, int size, CUTBUFFER_UPDATE_OP update_
 	}
 
 	if (entry->utf8)
-		while (entry->pos-size-w > 0 &&
-		       i_wcwidth(entry->text[entry->pos-size-w]) == 0) w++;
+		while (entry->pos > size + w && i_wcwidth(entry->text[entry->pos - size - w]) == 0)
+			w++;
 
 	g_memmove(entry->text + entry->pos - size, entry->text + entry->pos,
 		  (entry->text_len-entry->pos+1) * sizeof(unichar));