patch 1.39 - Add a hack for libsyntax_ext, and a comment of a better solution.
patch 1.39 - Add a hack for libsyntax_ext, and a comment of a better solution.

thepowersgang/mrustc,thepowersgang/mrustc,thepowersgang/mrustc,thepowersgang/mrustc,thepowersgang/mrustc