[Bug preprocessor/60492] Using the L#param in a macro fails

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60492

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'm pretty sure GCC is correct, you cannot construct a wide-character string
literal like that using the preprocessor