https://git.ruby-lang.org/ruby.git/commit/?id=a9c96222a9

From a9c96222a980970de865958f3d1b9a4fde6efed1 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <tenderlove@r...>
Date: Tue, 13 Jul 2021 14:43:13 -0700
Subject: Dup strings so we can mutate them

I guess the strings are frozen, so we need to dup before mutating
---
 yjit.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/yjit.rb b/yjit.rb
index 20668663a3..f5b2fca54e 100644
--- a/yjit.rb
+++ b/yjit.rb
@@ -63,7 +63,7 @@ module YJIT https://github.com/ruby/ruby/blob/trunk/yjit.rb#L63
       highlight = ->(comment) { "<b>#{comment}</b>" }
       linebreak = "<br align=\"left\"/>\n"
 
-      buff = ''
+      buff = ''.dup
       blocks = blocks_for(iseq).sort_by(&:id)
       buff << "digraph g {\n"
 
@@ -103,7 +103,7 @@ module YJIT https://github.com/ruby/ruby/blob/trunk/yjit.rb#L103
     def self.disasm_block(cs, block, highlight)
       comments = comments_for(block.address, block.address + block.code.length)
       comment_idx = 0
-      str = ''
+      str = ''.dup
       cs.disasm(block.code, block.address).each do |i|
         while (comment = comments[comment_idx]) && comment.address <= i.address
           str << "  ; #{highlight.call(comment.comment)}\n"
-- 
cgit v1.2.1


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