[Bug nptl/16549] pthread_cond_wait and pthread_cond_timedwait do not suspend the calling thread

["bugdal at aerifal dot cx" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16549

--- Comment #7 from Rich Felker <bugdal at aerifal dot cx> ---
BTW I think this general class of bugs should be filed as a bug against GCC:
misaligned packed structure members should have the fact that they're
misaligned encoded as part of their type, so that applying the address-of
operator to them yields a pointer type that's not compatible with the standard
pointer type. Then, pthread_cond_wait(&packed_struct.misaligned_cond, ...)
would yield a compile-time error due to incompatible pointer types. Likewise,
the compile's format string warnings could catch the mismatched pointer type in
scanf("%d", &packed_struct.foo).

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