NEW 243963
[libpas] FreeBSD displays a lot of warning when thread exits 
https://bugs.webkit.org/show_bug.cgi?id=243963
Summary [libpas] FreeBSD displays a lot of warning when thread exits
Basuke Suzuki
Reported 2022-08-15 16:59:51 PDT
> Thread 8807027e0 has exited with leftover thread-specific data after 4 destructor iterations
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Basuke Suzuki
Comment 1 2022-08-15 17:08:00 PDT
The reason might be here: https://github.com/WebKit/WebKit/blob/main/Source/bmalloc/libpas/src/libpas/pas_thread_local_cache.c#L137-L145 It calls thread_setspecific from destructor to mark the thread has been exited already. Then FreeBSD's _thread_cleanupspecific reports error here: https://github.com/freebsd/freebsd-src/blob/373ffc62c158e52cde86a5b934ab4a51307f9f2e/lib/libthr/thread/thr_spec.c#L163-L167 Are there any other way to set the flag to tell the thread is exiting ?
Basuke Suzuki
Comment 2 2022-08-15 17:09:00 PDT
Apple platforms have `pthread_self_is_exiting_np()` to detect this situation.
Radar WebKit Bug Importer
Comment 3 2022-08-22 17:00:19 PDT
<rdar://problem/99006058>
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