tree f9d1e5cd37c974979ff8ea2247ed3ad1bbda2be0
parent 6e68763085b2a9003b3b5fab4ff6418a667124f2
author Ben Wagner <bungeman@chromium.org> 1630428468 -0400
committer Akira TAGOH <akira@tagoh.org> 1630898431 +0000

Free local FcCache lock on contention

If two threads attempt to create the FcCache lock in lock_cache at the
same time, both threads may create and initialize a local FcMutex. One
thread will atomically make cache_lock point to its FcMutex. The other
thread currently calls FcMutexFinish on the local lock, but does not
free it. Change this behavior to free the unused lock.

Found with test/test-pthread on an LeakSanitizer enabled build.