[Bug preprocessor/69126] [6 regression] _Pragma does not apply if part of a macro

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69126

--- Comment #26 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #25)
[...]
> I have a patch that seems to work for this test case; am testing it more
> thoroughly now.
Candidate patch posted here:
  https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01424.html
(see also: https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01425.html )