C初心者がbyebugにPR出した話

C初心者がbyebugにPR出した話

1. 1. C byebug PR @tzm_freedom
2. 2. • Twitter: @tzm_freedom • GitHub: tzmfreedom • Blog: https://blog.freedom-man.com • • Ruby/Rails • Ruby 2 Rails 1 • API • .rb 2
3. 3. • byebug(pry-byebug) • REPL • • binding.irb • REPL • • ruby-debug-ide(debase) • RubyMine IDE • web-console web REPL • better_errors + binding_of_caller web REPL •
4. 4. byebug debase(ruby-debug-ide) • 10.0.0 byebug debase NoMethodError (undefined method `step_out' for #<Byebug::Context: 0x007fa4608278d0>): • undefined step_out
5. 5. byebug • https://blog.freedom-man.com/byebug-codereading/ • TracePoint C 
 • TracePoint gem byebug • Ruby 2.5 bootsnap Rails byebug RubyVM::InstructionSequence.load_from_binary TracePoint • C
6. 6. C gdb • gdb ruby : 
 http://techlife.cookpad.com/entry/2015/12/09/163746 • gdb —args ruby ./hoge.rb • gdb .gdbinit rc • gdb dashboard • ruby/ruby .gdbinit
7. 7. • Init_context(), Init_breakpoint() debase extern • byebug Kernel.byebug `byebug/core` require Init_context() Init_breakpoint() • • byebug Init_context() debase Init_context() • debase byebug 😇
8. 8. Byebug::Context = Debase::Context
9. 9. • • C byebug_ prefix • extern => static
10. 10. byebug debase
11. 11. byebug debase
12. 12. debase debase