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This adds the module keywords. These are special internal tokens generated by the preprocessor's module-control-line token peeking logic. Spelling them with a space means that they turn back into regular tokens in preprocessor output (but do skew the column numbering :() gcc/c-family/ * c-common.c (module, import, export): New internal tokens (with trailing space). * c-common.h (RID__MODULE, RID__IMPORT & RID__EXPORT): Enumerate them. (D_CXX_MODULES, D_CXX_MODULES_FLAGS): Enable them. * c-cppbuiltin.c (c_cpp_builtins): Feature macro. gcc/cp/ * lex.c (init_reswords): Maybe enable module keywords.
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