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Date: Fri, 17 Apr 2015 16:21:26 -0400 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Re: Explicit casts in ctype.h suppress compiler warnings On Fri, Apr 17, 2015 at 09:43:24PM +0200, Szabolcs Nagy wrote: > * 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 Yes, this is exactly the type of thing I hoped could be done. > meanwhile i tested that (__extension__ (unsigned){a}) > is accepted without warning in c89 mode Try again with -pedantic. Rich
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