Doesn't stop at breakpoints

[dhruvasagar]

Hey,

I am using gvim on ubuntu, I have also tested the same scenario of trying to debug a rails application from vim inside a terminal however it just does not stop at any breakpoints.

There is nothing in the logs to indicate anything having went wrong.

[astashov]

There is not enough information which could help me :)
What version of Ruby? What version of Rails? Also, please show everything from the files inside vim-ruby-debugger/tmp dir, i.e. ruby_debugger_log, ruby_debugger_output, ruby_debugger.

[dhruvasagar]

I was working with ruby 1.9.2-p180, rails v3.2. The logs inside tmp directory didn't have much, just some warnings that rails s generated. The rails server did get started like it should, but when going through the pages where I kept break points, the debugger didn't stop at them.

I am using ruby-debug-ide19.

[astashov]

Please attach the logs anyway. :) Otherwise, I really can't do anything to help you.

[dhruvasagar]

$ cat ruby_debugger

<breakpointAdded no="1" location="/home/dhruvasagar/Work/bounty/app/controllers/employer_home_controller.rb:4"/>

$ cat ruby_debugger_log

(empty)

$ cat ruby_debugger_output

Fast Debugger (ruby-debug-ide 0.4.9) listens on :39767
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/smtp.rb:806: warning: already initialized constant SMTPSession
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:687: warning: already initialized constant POP
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:688: warning: already initialized constant POPSession
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:689: warning: already initialized constant POP3Session
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:702: warning: already initialized constant APOPSession
=> Booting Thin
=> Rails 3.2.8 application starting in development on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
>> Thin web server (v1.4.1 codename Chromeo)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:3000, CTRL+C to stop


Started GET "/" for 127.0.0.1 at 2013-01-16 14:40:02 +0530

(more rails logs stripped)

[astashov]

Ah. Right. Add

let g:ruby_debugger_debug_mode = 1

to .vimrc file, and try again.

[astashov]

<breakpointAdded no="1" location="/home/dhruvasagar/Work/bounty/app/controllers/employer_home_controller.rb:4"/>

This line means that server actually received the response from ruby-debug-ide, but by some reason, Vim didn't handle it. Let's see what will be in logs though, when you add that line to your .vimrc

[dhruvasagar]

Cool, let me do that.

[dhruvasagar]

==> ruby_debugger <==

<breakpointAdded no="1" location="/home/dhruvasagar/Work/bounty/app/controllers/employer_home_controller.rb:5"/>

==> ruby_debugger_log <==
Ruby_debugger.rb, 08:43:33 : Queue is not empty, we will pass queue to rdebug-ide
Ruby_debugger.rb, 08:43:33 : Putting message to rdebug-ide: start
Ruby_debugger.rb, 08:43:33 : Sending message to vim-ruby-debugger:
Ruby_debugger.rb, 08:43:33 : Put message to temp file
Ruby_debugger.rb, 08:43:33 : Executing command: gvim --servername GVIM -u NONE -U NONE --remote-send "<C-\>:call RubyDebugger.receive_command()"
Vim plugin, 08:43:33: Received command:
Vim plugin, 08:43:33: Received the breakpoint message, will add PID and number of breakpoint to the Breakpoint object
Vim plugin, 08:43:33: Found the Breakpoint object for /home/dhruvasagar/Work/bounty/app/controllers/employer_home_controller.rb:5
Vim plugin, 08:43:33: Added id: 1, PID:22262 to Breakpoint
Vim plugin, 08:43:33: Breakpoint is set: /home/dhruvasagar/Work/bounty/app/controllers/employer_home_controller.rb:5

==> ruby_debugger_output <==
Fast Debugger (ruby-debug-ide 0.4.16, ruby-debug-base 0.11) listens on 127.0.0.1:39767
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/smtp.rb:806: warning: already initialized constant SMTPSession
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:687: warning: already initialized constant POP
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:688: warning: already initialized constant POPSession
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:689: warning: already initialized constant POP3Session
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p180@bounty/gems/tlsmail-0.0.1/lib/net/pop.rb:702: warning: already initialized constant APOPSession

[dhruvasagar]

Yet it doesn't stop at the breakpoint. What I am noticing is that your plugin is using --servername GVIM, do I need to put this in my .gvimrc, for progname setting ?

[astashov]

It's actually pretty weird it doesn't stop at the breakpoint, according to the logs, it successfully set the breakpoint.
Hmm, maybe Thin forks new processes for response handlers, could you please try to use e.g. webrick?

[astashov]

I.e. :Rdebugger 'script/rails s webrick' or something like that.

[dhruvasagar]

Didn't work with webrick either...

[dhruvasagar]

Should g:ruby_debugger_progname be set to 'gvim' ?

[astashov]

No, it shouldn't. It seems like everything works just fine, except one little thing - it doesn't stop at breakpoints :)
Maybe try to run some little script?

Create a.rb file in your current dir, which looks like:

a = 1
b = 2
c = a + b
c

Then open it in vim, set a breakpoint to e.g. c = a + b (\b), then run debugger with :Rdebugger a.rb. Then see what happens, and if it doesn't work - send logs again.

Thanks!

[dhruvasagar]

I get this in ruby_debug_output

Fast Debugger (ruby-debug-ide 0.4.16, ruby-debug-base 0.11) listens on 127.0.0.1:39767
Exception in DebugThread loop: undefined method `is_binary_data?' for "1":String
Backtrace:
/home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:124:in `print_variable'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:73:in `block (2 levels) in print_variables'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:72:in `each'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:72:in `block in print_variables'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:253:in `print_element'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/xml_printer.rb:69:in `print_variables'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/command.rb:85:in `method_missing'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/commands/variables.rb:130:in `execute'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:78:in `block (2 levels) in process_context_commands'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:71:in `each'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:71:in `block in process_context_commands'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:70:in `catch'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:70:in `process_context_commands'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:39:in `block in process_commands'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:35:in `catch'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug/processor.rb:35:in `process_commands'
  from: /home/dhruvasagar/.rvm/gems/ruby-1.9.2-p290@global/gems/ruby-debug-ide-0.4.16/lib/ruby-debug-ide.rb:140:in `block in start_control'