[Bug preprocessor/44317] ,##__VA_ARGS__ comma not eaten with -std=c++0x

[emsr at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44317

--- Comment #6 from emsr at gcc dot gnu.org ---
Created attachment 33119
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33119&action=edit
Patch to pedwarn.

This doesn't have the right column pointed out.
Also, the message (and that given by clang) is, in my opinion, obscure.
At least this starts the ball rolling.