Bug #18624
Updated by pocke (Masataka Kuwabara) about 2 years ago
`const_source_location` returns `[false, 0]` unexpectedly with the following code.
```ruby
# test.rb
path = File.join(__dir__, 'test2')
Object.autoload 'Test2', path
require path
p Object.const_source_location 'Test2'
```
```ruby
# test2.rb
class Test2
end
```
```bash
$ ruby -v test.rb
ruby 3.2.0dev (2022-03-11T08:38:13Z master 2e4516be26) [x86_64-linux]
[false, 0]
```
I expect it returns `['/path/to/test2.rb', 2]`, but it doesn't.
Ruby 2.7 ~ 3.1 have the same behavior.
I actually encountered this problem in a Rails app with Zeitwerk. The following codes are a reproducing example with Zeitwerk.
`loader.setup` calls `autoload`, so it causes the same problem.
```ruby
# test.rb
require "zeitwerk"
loader = Zeitwerk::Loader.for_gem
loader.setup
require File.join(__dir__, 'test2')
p Zeitwerk::VERSION
p Object.const_source_location 'Test2'
```
```ruby
# test2.rb
class Test2
end
```