dsanders added a comment. I haven't fully proven this yet (because I haven't found the table), but I think that C and C++ are sharing the same table and we're colliding with a bit that only makes sense to C. This would explain why your tests don't fail but regex_word still collides with _ISgraph in the table.
I've confirmed that glibc is testing for _ISgraph, and libstdc++ defines ctype_base as per the standard. I just need to find the table. http://reviews.llvm.org/D17132 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits