Issue #15720 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 2.4: UNKNOWN, 2.5: REQUIRED, 2.6: REQUIRED to 2.4: UNKNOWN, 2.5: REQUIRED, 2.6: DONE ruby_2_6 r67729 merged revision(s) 5e018214e7435030727a97ac49db038d96438e74. ---------------------------------------- Bug #15720: SystemStackError when referencing a refinement in a module that isn't used https://bugs.ruby-lang.org/issues/15720#change-80394 * Author: chocolateboy (Chocolate Boy) * Status: Closed * Priority: Normal * Assignee: ko1 (Koichi Sasada) * Target version: * ruby -v: ruby 2.7.0dev (2019-03-21 trunk 67332) [x86_64-linux] * Backport: 2.4: UNKNOWN, 2.5: REQUIRED, 2.6: DONE ---------------------------------------- ```ruby module M1 refine Kernel do def foo 'foo called!' end end end module M2 refine Kernel do def bar 'bar called!' end end end using M1 puts foo puts bar ``` Expected: ``` foo called! Traceback (most recent call last): bug.rb:20:in `<main>': undefined local variable or method `bar' for main:Object (NameError) ``` Actual: ``` foo called! Traceback (most recent call last): bug.rb:20:in `<main>': stack level too deep (SystemStackError) ``` Platform: Linux (Arch) ruby -v: - ruby 2.7.0dev (2019-03-21 trunk 67332) [x86_64-linux] - ruby 2.6.2p47 (2019-03-13 revision 67232) [x86_64-linux] - ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-linux] ---Files-------------------------------- bug.rb (188 Bytes) sse-unused-refinement.patch (1.85 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:ruby-core-request / ruby-lang.org?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>