Messages in this thread | | | Date | Sun, 23 Jul 2006 17:43:46 +0200 | From | ricknu-0@student ... | Subject | Re: [RFC][PATCH] A generic boolean (version 3) |
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Citerar Lars Gullik Bjønnes <larsbj@gullik.net>:
> ricknu-0@student.ltu.se writes: > > | --- a/include/asm-i386/types.h > | +++ b/include/asm-i386/types.h > | @@ -1,6 +1,13 @@ > | #ifndef _I386_TYPES_H > | #define _I386_TYPES_H > | > | +#if __GNUC__ >= 3 > | +typedef _Bool bool; > | +#else > | +#warning You compiler doesn't seem to support boolean types, will set > 'bool' as > | an 'unsigned int' > | +typedef unsigned int bool; > | +#endif > | + > > What does C99 say about sizeof(_Bool)? > > At least with gcc 4 it is 1. Can that pose a problem? gcc < 3 giving a > different size for bool?
Well, it might. I don't see it other then when someone uses a variable of another type and the "boolean" variable (now an int) is of a larger value then that variable. But then that is a bug and should be fixed.
But rest easy, bool will only be _Bool from now on. :)
> -- > Lgb
Richard Knutsson
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