From 67bb95936d241bd452f3bcfb76276e0ab61234f0 Mon Sep 17 00:00:00 2001 From: k0kubun Date: Tue, 13 Mar 2018 12:56:04 +0000 Subject: Fix FrozenError on `Ripper.slice` Currently `Ripper.slice` raises a FrozenError ```ruby require 'ripper' p Ripper.slice('foo', 'ident') ``` ``` /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:193:in `concat': can't modify frozen String (FrozenError) from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:193:in `block in compile' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:190:in `scan' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:190:in `compile' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:169:in `initialize' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:151:in `new' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:151:in `token_match' from /path/to/g/lib/ruby/2.6.0/ripper/lexer.rb:144:in `slice' from /tmp/tmp.kb4cnhvum2/test.rb:2:in `
' ``` This patch will fix the problem. [Fix GH-1837] From: Masataka Pocke Kuwabara git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62743 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- ext/ripper/lib/ripper/lexer.rb | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'ext/ripper/lib') diff --git a/ext/ripper/lib/ripper/lexer.rb b/ext/ripper/lib/ripper/lexer.rb index ffde9a4ed3..ece71dd466 100644 --- a/ext/ripper/lib/ripper/lexer.rb +++ b/ext/ripper/lib/ripper/lexer.rb @@ -186,7 +186,7 @@ class Ripper if m = /[^\w\s$()\[\]{}?*+\.]/.match(pattern) raise CompileError, "invalid char in pattern: #{m[0].inspect}" end - buf = '' + buf = +'' pattern.scan(/(?:\w+|\$\(|[()\[\]\{\}?*+\.]+)/) do |tok| case tok when /\w/ -- cgit v1.2.3