IO deadlock

[Ulrich Drepper]

Thorsten Kukuk <kukuk@weber-eb.uni-paderborn.de> writes:

> I have found the problem: We have a lock deadlock.
> fflush() locks the stream, and _IO_SYNC, too. It will hang in _IO_SYNC
> in flockfile().

I've changed _IO_file_sync.  I don't know why I've added locking
there.  It's not necessary and not wanted.

> There are some more functions, which makes a double lock on the stream.
> Haven't found them all yet, but getpwuid_r will also hang.

Well, as I've said double locking shouldn't be a problem normally...

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