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From: "byroot (Jean Boussier) via ruby-core"
Date: 2025-05-14T14:20:57+00:00
Subject: [ruby-core:122098] [Ruby Bug#21339] Namespace: `RubyVM::InstructionSequence.load_iseq` isn't called for the root namespace
Issue #21339 has been reported by byroot (Jean Boussier).
----------------------------------------
Bug #21339: Namespace: `RubyVM::InstructionSequence.load_iseq` isn't called for the root namespace
https://bugs.ruby-lang.org/issues/21339
* Author: byroot (Jean Boussier)
* Status: Assigned
* Assignee: tagomoris (Satoshi Tagomori)
* ruby -v: ruby 3.5.0dev (2025-05-14T12:41:46Z master b5575a80bc) +PRISM [arm64-darwin24]
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
```ruby
File.write("/tmp/compile-cache.rb", <<~'RUBY')
class << RubyVM::InstructionSequence
def load_iseq(path)
p [:load_iseq, path]
RubyVM::InstructionSequence.compile_file(path)
end
end
RUBY
File.write("/tmp/test-file.rb", "")
puts "main:"
require "/tmp/compile-cache.rb"
require "/tmp/test-file.rb"
if ENV["RUBY_NAMESPACE"]
puts "namespace:"
ns = Namespace.new
ns.require("/tmp/compile-cache.rb")
ns.require("/tmp/test-file.rb")
end
```
Expected behavior:
I would expect `load_iseq` to be invoked both in the root namespace and the user namespace when `RUBY_NAMESPACE=1`.
Actual behavior:
Somehow it's only invoked in the user namespace:
```bash
main:
[:compile_cache_setup]
[:load_iseq, "/tmp/test-file.rb"]
```
```bash
main:
[:compile_cache_setup]
namespace:
[:compile_cache_setup]
[:load_iseq, "/tmp/test-file.rb"]
```
But I don't understand why.
--
https://bugs.ruby-lang.org/
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