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SubjectRe: #pragma once?
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On Mon, Jan 6, 2014 at 3:47 PM, Josh Triplett <josh@joshtriplett.org> wrote:
> Does anyone have any objection to the use of "#pragma once" instead of
> the usual #ifndef-#define-...-#endif include guard? GCC, LLVM/clang,
> and the latest Sparse all support either method just fine. (I added
> support to Sparse myself.) Both have equivalent performance. "#pragma
> once" is simpler, and avoids the possibility of a typo in the defined
> guard symbol.

Unfortunately in GCC #pragma once is slower and slightly buggier than
regular include guards:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52566
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58770


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