[Bug c++/53843] Macros following string literals don't expand in C++11 mode

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53843

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-03 
20:07:11 UTC ---
and C.2.1 in the C++11 standard

and PR 50917 and PR 51282

and https://groups.google.com/forum/#!topic/comp.std.c++/9nD4Mb8pN1Q
(the second to last post quotes C.2.1)