master: Build failure in malloc with GCC 7

[Andreas Schwab]

On Jul 12 2017, Florian Weimer <fweimer@redhat.com> wrote:

> The attached patch adds an assert which reveals to the GCC optimizers
> that the global_max_fast can never MAX_FAST_SIZE, so this particular
> issue goes away.  However, there is a cost in terms of code size because
> it affects many places in malloc.

Can __builtin_unreachable avoid the runtime overhead?

Andreas.

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