Issue #10689 has been updated by Kazuki Tsujimoto. Status changed from Open to Closed % Done changed from 0 to 100 Applied in changeset r49266. ---------- * eval_intern.h, vm.c, vm_eval.c, vm_insnhelper.c: change throw mechanism (not save target ep, but save target cfp). It fixes `unexpected break' bug that occurs when TracePoint#binding is called. [ruby-dev:48797] [Bug #10689] * test/ruby/test_settracefunc.rb: add a test. ---------------------------------------- Bug #10689: `unexpected break' occurs when TracePoint#binding is called https://bugs.ruby-lang.org/issues/10689#change-51034 * Author: Kazuki Tsujimoto * Status: Closed * Priority: Normal * Assignee: * ruby -v: ruby 2.3.0dev (2015-01-02 trunk 49102) [x86_64-linux] * Backport: 2.0.0: REQUIRED, 2.1: REQUIRED, 2.2: REQUIRED ---------------------------------------- 以下のコードでunexpected breakになります。 ~~~ruby class Bug include Enumerable def each [0].each do yield end end end TracePoint.trace(:c_return) do |tp| tp.binding end Bug.new.all? { false } ~~~ all?中のrb_iter_breakによってth->errinfoがセットされた後に、 TracePoint#binding呼び出しによってcfpのepがヒープを指すようになってしまうのが原因です。 とりあえずTracePoint呼び出し後にth->errinfoのepを書き換えるようにしてみたパッチを添付します。 ---Files-------------------------------- fix-unexpected-break.patch (3.32 KB) save-target-cfp-in-errinfo.patch (6.26 KB) -- https://bugs.ruby-lang.org/