From: nagachika00@... Date: 2017-03-27T15:11:21+00:00 Subject: [ruby-core:80387] [Ruby trunk Bug#13238] string.c assertion fails after attempting to modify singleton class of a frozen string Issue #13238 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 2.2: DONTNEED, 2.3: REQUIRED, 2.4: DONTNEED to 2.2: DONTNEED, 2.3: DONE, 2.4: DONTNEED ruby_2_3 r58157 merged revision(s) 56747,56754,56777. ---------------------------------------- Bug #13238: string.c assertion fails after attempting to modify singleton class of a frozen string https://bugs.ruby-lang.org/issues/13238#change-63875 * Author: owst (Owen Stephens) * Status: Closed * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-darwin14] * Backport: 2.2: DONTNEED, 2.3: DONE, 2.4: DONTNEED ---------------------------------------- Hi, The following code causes an assertion failure in 2.3.3. Create two files, `bug.rb` and `not_frozen.rb`: bug.`rb`: ~~~ ruby s = 'abc'.freeze def s.something; end rescue nil require_relative 'not_frozen' ~~~ `not_frozen.rb`: ~~~ ruby 'abc' ~~~ And then run `ruby bug.rb` The output is: ~~~ Assertion failed: (RBASIC_CLASS(ret) == rb_cString), function register_fstring, file string.c, line 327. ~~~ Searching for the error message I see that this exact issue (#12923) has been fixed for Ruby 2.4.0 - please can this fix be back-ported to Ruby 2.3? Thanks, Owen. -- https://bugs.ruby-lang.org/ Unsubscribe: