Try to send SEGV to show C bt

for the following failure

```
    1) Error:
  TestClass#test_safe_multi_ractor_subclasses_list_mutation:
  Test::Unit::ProxyError: execution of Test::Unit::CoreAssertions#assert_separately expired timeout (10 sec)
  pid 814469 killed by SIGTERM (signal 15)
  |
      /tmp/ruby/src/trunk_gcc14/test/ruby/test_class.rb:922:in 'TestClass#test_safe_multi_ractor_subclasses_list_mutation'
```

0 files changed, 0 insertions, 0 deletions