From 45aa5081e418423b47a32a06e0515406f63b64d2 Mon Sep 17 00:00:00 2001
From: KOBAYASHI Shuji <shuujii@gmail.com>
Date: Thu, 7 Nov 2019 22:16:59 +0900
Subject: Clear `MRB_STR_SHARED` flag in `mrb_str_modify_keep_ascii`; close
 #4807

---
 src/string.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index b69a39df8..251e00628 100644
--- a/src/string.c
+++ b/src/string.c
@@ -820,6 +820,7 @@ mrb_str_modify_keep_ascii(mrb_state *mrb, struct RString *s)
     if (shared->refcnt == 1 && s->as.heap.ptr == shared->ptr) {
       s->as.heap.aux.capa = shared->capa;
       s->as.heap.ptr[s->as.heap.len] = '\0';
+      RSTR_UNSET_SHARED_FLAG(s);
       mrb_free(mrb, shared);
     }
     else {
-- 
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