Fix flaky test_tracepoint_callee_idHEADmaster

In parallel test-all, a worker process may hold garbage Tempfile
objects left by previously run test files. When GC is triggered while
a TracePoint of this test is enabled, their finalizers
(Tempfile::FinalizerManager#call) run on the main thread at an
interrupt checkpoint, so the target_thread? guard cannot reject their
events and the test fails like:

  TestSetTraceFunc#test_tracepoint_callee_id:
  <[:c_return, :each_char, :each]> expected but was
  <[:c_return, :delete, :delete]>.  # Hash#delete in the finalizer

Reject such events by looking at caller_locations: an event is ours
iff the innermost frame, ignoring core methods written in Ruby
(<internal:*> such as Kernel#tap), belongs to this file. Finalizer
frames are pushed on top of the interrupted frame of this file, so
their events are rejected even when a finalizer calls core methods
written in Ruby.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions