Messages in this thread | | | From | Linus Torvalds <> | Date | Tue, 20 Mar 2018 16:09:51 -0700 | Subject | Re: detecting integer constant expressions in macros |
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On Tue, Mar 20, 2018 at 4:07 PM, Uecker, Martin <Martin.Uecker@med.uni-goettingen.de> wrote: > > talking of crazy ideas, here is another way to preserve > integer const expressions in macros by storing it a > VLA type (only for positive integers I guess): > > > #define MAX(a, b) sizeof(*({ \ > typedef char _Ta[a]; \ > typedef char _Tb[b]; \ > (char(*)[sizeof(_Ta) > sizeof(_Tb) ? sizeof(_Ta) : > sizeof(_Tb)])0; }))
I liked your previous hack more. This is much more limited and not nearly as disgustingly subtle.
Linus
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