Bug #17622: Segfault in new Rails app

• Status: Closed
• Assignee: -
• Target version: -
• Backport: 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: DONE

[peterzhu2118 (Peter Zhu)]

Pull request on GitHub.

There is a segfault in Ruby master and Ruby 3.0.0, but not present in Ruby 2.7.2. A bisect shows that it's present since commit a53e2850c572135ed657144bc14e47b29c64fa94.

Reproduction

1. Use Ruby 3.0.0 or Ruby master.

2. Create a new Rails app (rails new repro).

3. Add the following script.rb:

   def load_rails
     tp = TracePoint.new(:c_return) do
     end
   
     require './config/application'
     rails = Object.const_get(:Rails)
     rails.application.require_environment!
     rails.application.eager_load!
   end
   
   def foo
     -> do
       load_rails
     end
   end
   
   foo.call
   puts "ok"
   

4. Run the script with DISABLE_BOOTSNAP=1 ruby script.rb

Expected output

The script should print ok.

Actual output

Crashes with a segfault (check file crash.log for full crash log).

[peterzhu2118 (Peter Zhu)]

• Description updated (diff)

[peterzhu2118 (Peter Zhu)]

• Status changed from Open to Closed

Applied in changeset git|15dbaa0b54f10e43976d594ef987da5f51e0c7c1.

---

[Fixes #17622] Mark and move the previous ep

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN to 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: REQUIRED

[naruse (Yui NARUSE)]

• Backport changed from 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: REQUIRED to 2.5: DONTNEED, 2.6: DONTNEED, 2.7: DONTNEED, 3.0: DONE

ruby_3_0 5816725ccc9642101d447b0f3b03c14d232aec6a merged revision(s) 15dbaa0b54f10e43976d594ef987da5f51e0c7c1.