[LTP] OpenPOSIX: Allow 0 return value when detaching or joining joined thread

[linuxtestproject.agent@gmail.com]

Hi Wei,

On Sat, 09 May 2026 08:26:47 +0000, Wei Gao wrote:
> OpenPOSIX: Allow 0 return value when detaching or joining joined thread

> These are caused by glibc commit 5da15b15adab661c80e373b6af89be0b5fa5b3ad
> ("nptl: Do not use pthread set_tid_address as state synchronization (BZ #19951)").

The motivation is clear and the fix looks correct — accepting 0 in addition
to ESRCH matches the new glibc behavior.

> The new glibc logic removed the explicit validation of thread handles that
> previously returned ESRCH:

The commit message is missing a Signed-off-by: tag. Please add:

  Signed-off-by: Wei Gao <wegao@suse.com>

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