[Xcb] [Bug 98048] libpthread-stubs must NOT provide symbols which depend on actual implementation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98048

--- Comment #5 from Emil Velikov <emil.l.velikov at gmail.com> ---
I believe Ian's explanation perfectly reasonable, but let me try from another
angle:

libpthreads-stub must _not_ provide stub implementation for APIs that
absolutely requires locking/other. Would that be pthread_mutexattr_settype or
any other.

IIRC a modern GLIBC/Solaris already cover what can be stubbed. Everything else
simply requires an actual implementation.

In here's example: mesa's dri modules depend on setting up a recursive mutex,
which is something that cannot be ignored/stubbed.

mesa has been 'fixed' before the libpthreads-stub patch landed. If there's an
issue there, do poke me.

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