[Bug c++/79490] ICE when compiling CATCH unit testing framework header

[vz-gcc at zeitlins dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79490

--- Comment #3 from Vadim Zeitlin <vz-gcc at zeitlins dot org> ---
Created attachment 40727
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40727&action=edit
Compressed preprocessed source of a trivial example