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| author | nagachika <nagachika@ruby-lang.org> | 2024-12-15 15:28:25 +0900 |
|---|---|---|
| committer | nagachika <nagachika@ruby-lang.org> | 2024-12-15 15:28:25 +0900 |
| commit | 303a83d35c485db626c57415b344fdd4a8d0d5e5 (patch) | |
| tree | 9af7d560b236290bf0418dab628558b4be22814c /spec | |
| parent | d78e1a413333bae4e70e662ac7eceb378b2a5369 (diff) | |
merge revision(s) 660b995365f719fa59ed6f2809bb1527e6470d14: [Backport #20915]
[Bug #20915] Fix SEGV with `TracePoint#parameters` and aliased C method
The following snippet results with a SEGV:
```ruby
C = Class.new do
alias_method :new_to_s, :to_s
end
TracePoint.new(:c_call, &:parameters).enable { C.new.new_to_s }
```
at MRI 3.3.6 and ruby 3.4.0dev
The root cause of the issue lies in the `rb_tracearg_parameters` function
within the `RUBY_EVENT_C_RETURN` branch. Specifically, when the invoked
method is an alias for a C function,
`rb_method_entry_without_refinements(..., trace_arg->called_id, ...)`
may return NULL. In that case we can fallback to `trace_arg->id`.
Diffstat (limited to 'spec')
0 files changed, 0 insertions, 0 deletions
