[Bug c++/82531] ICE: Segmentation fault (-std=c++1z -fconcepts)

[gcc-bugs at deta dot lv]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82531

--- Comment #2 from Arturs Zoldners <gcc-bugs at deta dot lv> ---
Created attachment 42363
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42363&action=edit
archive of 3 test cases of ICE vs base what compiles

Here are the test cases. The base compiles. 3 other are derived by substituting
"auto" with a concept. Can't tell if code is valid, although. All 3 back-traces
differ (a bit).