Issue #12278 has been updated by Gleb Averchuk. Koichi Sasada wrote: > Do you have easy reproducible code which we can try? The error has occurred suddenly everytime. Almost always, I got it during RSpec tests run. Before, I was not able to write a simple example for provoke an error. Also, I have noted that on 2.2.4 the error does not occur, and since then I use it. But now, following your request, I will continue to use 2.3.0 intentionally to catch the error and extract the simple reproducing code. I'll let you know if I will find it. ---------------------------------------- Bug #12278: Sometimes I have segmentation fault with procs reducer https://bugs.ruby-lang.org/issues/12278#change-58409 * Author: Gleb Averchuk * Status: Open * Priority: Normal * Assignee: * ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15] * Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN ---------------------------------------- Hello, Sometimes I have segmentation fault for code like: ~~~ # /Users/newmen/projects/versatile-diamond/analyzer/lib/modules/procs_reducer.rb:35 8 # Combines passed procs to one function 9 # @param [Array] procs which will be combined 10 # @yield returns heart of combination result 11 # @return [Proc] the general function which contains calls of all other nested 12 def reduce_procs(procs, &deepest_block) 13 procs.reverse.reduce(deepest_block) do |acc, block| 14 -> { block[&acc] } 15 end 16 end 17 18 # Calls combined procs as one function 19 # @param [Array] procs which will be combined 20 # @yield returns heart of combination result 21 # @return [Object] 22 def call_procs(procs, &block) 23 reduce_procs(procs, &block).call 24 end 25 26 # Collects procs which nests each other, after than calls combined procedure 27 # @param [Proc] deepest_block the block for the deepest call 28 # @yield [Symbol, Array, Hash] nests the some method call 29 # @return [Object] the result of deepest block call 30 def inlay_procs(deepest_block, &block) 31 procs = [] 32 nest = -> method_name, *args, **kwargs do 33 procs << 34 if kwargs.empty? 35 -> &prc { send(method_name, *args, &prc) } 36 else 37 -> &prc { send(method_name, *args, **kwargs, &prc) } 38 end 39 end 40 41 block[nest] 42 call_procs(procs, &deepest_block) 43 end ~~~ Console report and crash log files are attached. Both attached source files were written about 2 years ago. ---Files-------------------------------- report.log (107 KB) ruby_2016-04-13-205136_primemind.crash (27.4 KB) procs_reducer.rb (1.44 KB) minuend_spec.rb (5.43 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>