[Bug preprocessor/58844] [4.8/4.9 Regression] ICE with invalid use of ##

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58844

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 32159
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32159&action=edit
gcc49-pr58844.patch

Untested fix.

Regarding the validity of this testcase,
http://gcc.gnu.org/ml/gcc-patches/2009-04/msg01490.html
suggests that it is valid rather than invalid.