[Bug c++/70449] [6 Regression] ICE with -Wall on valid code on x86_64-linux-gnu in pp_string, at pretty-print.c:928

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70449

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 38157
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38157&action=edit
gcc6-pr70449.patch

Untested fix that attempts not to handle the case of fun being instantiation of
the current_function_decl like fun == current_function_decl case.