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Message-ID: <20150417194323.GK2875@port70.net>
Date: Fri, 17 Apr 2015 21:43:24 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: Explicit casts in ctype.h suppress compiler warnings
* Szabolcs Nagy <nsz@...t70.net> [2015-04-17 20:35:12 +0200]:
> > I admit I was thinking of doing isspace-style inlines everywhere, but thanks
> > to your suggestion I was able to come up with this:
> >
> > static __inline void __is_int(int a) {}
> > #define isdigit(a) (__is_int(0?(a):0), ((unsigned)(a)-'0') < 10)
> >
>
> i think using :0 there is not useful because null
> pointer constants are special in ?:
>
ah i see what you are doing there now
meanwhile i tested that (__extension__ (unsigned){a})
is accepted without warning in c89 mode
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