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Debugger raises "undefined method `prerelease?' for nil:NilClass (NoMethodError)" in CDP #472
Description
Your environment
ruby -v:
ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin20]rdbg -v:
Describe the bug
A clear and concise description of what the bug is.
When I debug irb, debugger raised "undefined method `prerelease?' for nil:NilClass (NoMethodError)" as follows:
$ exe/rdbg -c irb --open=chrome
DEBUGGER: Debugger can attach via TCP/IP (127.0.0.1:52808)
DEBUGGER: wait for debugger connection...
DEBUGGER: Connected.
["DEBUGGER Exception: /Users/naotto/workspace/debug/lib/debug/thread_client.rb:986",
#<NoMethodError: undefined method `prerelease?' for nil:NilClass>,
["/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:88:in `prerelease?'",
"/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:75:in `inspect'",
"/Users/naotto/workspace/debug/lib/debug/server_cdp.rb:877:in `variable_'",
"/Users/naotto/workspace/debug/lib/debug/server_cdp.rb:922:in `variable'",
"/Users/naotto/workspace/debug/lib/debug/server_cdp.rb:791:in `process_cdp'",
"/Users/naotto/workspace/debug/lib/debug/thread_client.rb:977:in `wait_next_action_'",
"/Users/naotto/workspace/debug/lib/debug/thread_client.rb:676:in `wait_next_action'",
"/Users/naotto/workspace/debug/lib/debug/thread_client.rb:284:in `suspend'",
"/Users/naotto/workspace/debug/lib/debug/thread_client.rb:318:in `block in step_tp'",
"/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:36:in `initialize'",
"/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:264:in `new'",
"/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:264:in `find_spec_for_exe'",
"/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:300:in `activate_bin_path'",
"/Users/naotto/.rbenv/versions/3.0.0/bin/irb:23:in `<main>'"]]
/Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:88:in `prerelease?': undefined method `prerelease?' for nil:NilClass (NoMethodError)
from /Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:75:in `inspect'
from /Users/naotto/workspace/debug/lib/debug/server_cdp.rb:877:in `variable_'
from /Users/naotto/workspace/debug/lib/debug/server_cdp.rb:922:in `variable'
from /Users/naotto/workspace/debug/lib/debug/server_cdp.rb:791:in `process_cdp'
from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:977:in `wait_next_action_'
from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:676:in `wait_next_action'
from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:284:in `suspend'
from /Users/naotto/workspace/debug/lib/debug/thread_client.rb:318:in `block in step_tp'
from /Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems/dependency.rb:36:in `initialize'
from /Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:264:in `new'
from /Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:264:in `find_spec_for_exe'
from /Users/naotto/.rbenv/versions/3.0.0/lib/ruby/site_ruby/3.0.0/rubygems.rb:300:in `activate_bin_path'
from /Users/naotto/.rbenv/versions/3.0.0/bin/irb:23:in `<main>'To Reproduce
exe/rdbg -c irb --open=chromeThen, press "StepInto" button 25 times.
Expected behavior
It should not raise an error.
Additional context
Add any other context about the problem here.
Activity
[-]Debugger raises `undefined method `prerelease?' for nil:NilClass (NoMethodError)` in CDP[/-][+]Debugger raises "undefined method `prerelease?' for nil:NilClass (NoMethodError)" in CDP[/+]Use "DEBUGGER__.safe_inspect" when debugger inspects objects
Use "DEBUGGER__.safe_inspect" when objects are inspected
Use "DEBUGGER__.safe_inspect" when objects are inspected