Messages in this thread | | | Date | Mon, 11 Dec 2006 08:34:06 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Mark bitrevX() functions as const |
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On Mon, 11 Dec 2006, David Howells wrote: > > Ah. I thought that was just for supporting old versions of gcc. I didn't > realise it was for handling strange compilers.
I'm not sure how much (if at all) the Intel compiler is actually used, and for all I know it may even support __attribute__((__const__)) these days, but I like the notion of allowing us to support other compilers, so the infrastructure is all set up for that.
The main <linux/compiler.h> thing includes various per-compiler headers, and then defaults some things to be empty if the compiler-specific header doesn't have its own #define for it. So it's actually set up to try to help more than just gcc or the Intel compiler, although nobody has done anything else afaik.
I think all versions of gcc support the __attribute__((const)) thing (and indeed, it's in the "generic" gcc header file, not the per-gcc-version one).
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