[PATCH] Promote NPCs used as arguments to variadic functions

[Nico Weber]

On Wed, Sep 24, 2014 at 2:20 PM, David Majnemer <david.majnemer at gmail.com>
wrote:

> Perhaps a warning should be added so code doesn't "miscompile" when
> compiled with GCC?
>

In practice, it's only miscompiled with GCC if someone undefines NULL and
redefines it. By default, NULL is __null in gcc, which also does the right
thing.

I believe warning on this would be very noisy.
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