[PATCH] Always do locking when accessing streams (bug 15142, bug 14697)

[Andreas Schwab]

On Feb 16 2020, Florian Weimer wrote:

> I'm not sure if the justification is correct.  We don't know if there
> are programs which call flockfile on some file and expect exit to
> still work (and terminate the program), which is part of what
> nptl/tst-stdio1 tests.

But that's exactly what the bug is about.  Random memory corruption
cannot be the answer.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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