https://issues.dlang.org/show_bug.cgi?id=23702
--- Comment #4 from Iain Buclaw <ibuc...@gdcproject.org> --- (In reply to Walter Bright from comment #3) > __has_extension is yet another C compiler extension (not ImportC's > invention). It's not GCC's invention either. Whose it is? It should be documented on the ImportC page. --