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Mark Geisert
f9f66495e9
Cygwin: Add fd validation where needed in mq_* functions
Validate the fd returned by cygheap_getfd operating on given mqd. A release note is provided for 3.5.6. Reported-by: Christian Franke <Christian.Franke@t-online.de> Addresses: https://cygwin.com/pipermail/cygwin/2025-January/257090.html Signed-off-by: Mark Geisert <mark@maxrnd.com> Fixes: 46f3b0ce85a9 (Cygwin: POSIX msg queues: move all mq_* functionality into fhandler_mqueue) (cherry picked from commit 9a4a44523bb71e1fd453cdebe2182c9ab913a222)
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