[Bug other/70517] c++filt crashes when demangling a symbol

[blastrock at free dot fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70517

--- Comment #1 from blastrock at free dot fr ---
Created attachment 38165
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38165&action=edit
preprocessed file by clang 3.8