http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60223
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> --- So, started with r166167. Before that I see: $ ./cc1plus-166166 -std=c++0x -quiet ~/x.C /home/polacek/x.C: In function ‘void bar()’: /home/polacek/x.C:7:13: error: ‘'\000'’ is not a valid template argument for type ‘char’ because it is a non-constant expression
