From a5031810492e168e0a834521112f42777d431506 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 30 Nov 2003 00:35:28 +0000
Subject: * string.c (rb_str_update): get rid of SEGV at just allocated String.
   [ruby-core:01812]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@5058 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 string.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'string.c')

diff --git a/string.c b/string.c
index eebc61cd10..d0ccce7671 100644
--- a/string.c
+++ b/string.c
@@ -1314,7 +1314,9 @@ rb_str_update(str, beg, len, val)
 	memmove(RSTRING(str)->ptr+beg, RSTRING(val)->ptr, RSTRING(val)->len);
     }
     RSTRING(str)->len += RSTRING(val)->len - len;
-    RSTRING(str)->ptr[RSTRING(str)->len] = '\0';
+    if (RSTRING(str)->ptr) {
+	RSTRING(str)->ptr[RSTRING(str)->len] = '\0';
+    }
     OBJ_INFECT(str, val);
 }
 
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