From 13015ebcf62aeeeddc298710c7cd889281f49844 Mon Sep 17 00:00:00 2001
From: Tatsuya Kinoshita <tats@debian.org>
Date: Thu, 4 Mar 2021 23:46:21 +0900
Subject: Prevent unneeded Strgrow in Strinsert_char

---
 Str.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Str.c b/Str.c
index b4f1360..464b5a7 100644
--- a/Str.c
+++ b/Str.c
@@ -348,7 +348,7 @@ Strinsert_char(Str s, int pos, char c)
 {
     int i;
     STR_LENGTH_CHECK(s);
-    if (pos < 0)
+    if (pos < 0 || s->length < pos)
 	return;
     if (s->length + 2 > s->area_size)
 	Strgrow(s);
-- 
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