https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60304
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Ah, as stdbool.h documents, using it in C++ (apparently meant C++98) is a GNU extension, and for that I bet having those macros is desirable. And then there is C++11 [support.runtime]/8 that requires it is not done: "The header <cstdbool> and the header <stdbool.h> shall not define macros named bool, true, or false." So, perhaps those macros should be conditional on C++ version?
