On 30 Dec 2011, at 16:52, Sean C. Farley wrote: >> My quick googling didn't show anything at all about the C++ standard and >> stdbool.h or __bool_true_false_are_defined. It was probably originally set >> because bool, true, and false are all C++ keywords so certain code that >> wanted to ifdef on them didn't also need to check __cplusplus. > > I did not find anything definitive either.
It's usually a better idea to check the spec than Google... stdbool.h is not part of the C++ standard, and so it is free to contain anything in C++ mode, just as any other non-standard header is. The <cstdbool> header is defined by the C++11 spec as containing JUST the __bool_true_false_are_defined macro. The purpose of this header in C++ mode is to allow the inclusion of C++ headers that expect to be able to use true and false and guard this by the use of the __bool_true_false_are_defined macro. David_______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
