https://git.ruby-lang.org/ruby.git/commit/?id=d2cfb5228a

From d2cfb5228a89678a712efd381e049391800373e1 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@a...>
Date: Tue, 1 Dec 2020 11:10:19 +0900
Subject: show with sharing info


diff --git a/gc.c b/gc.c
index aae05b5..3daa6a8 100644
--- a/gc.c
+++ b/gc.c
@@ -12281,6 +12281,7 @@ rb_raw_obj_info(char *buff, const int buff_size, VALUE obj) https://github.com/ruby/ruby/blob/trunk/gc.c#L12281
             }
 	    break;
 	  case T_STRING: {
+            if (STR_SHARED_P(obj)) APPENDF((BUFF_ARGS, " [shared] "));
             APPENDF((BUFF_ARGS, "%.*s", str_len_no_raise(obj), RSTRING_PTR(obj)));
 	    break;
 	  }
-- 
cgit v0.10.2


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