[RFC][BZ #16549] Add sanity check for condvar alignment.

[Andreas Schwab]

Ondřej Bílka <neleai@seznam.cz> writes:

> +  assert (((uintptr_t) cond) % sizeof (long) == 0);

Does it really require long alignment?  The futex syscall only requires
32 bit alignment.

Andreas.

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Andreas Schwab, SUSE Labs, schwab@suse.de
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