[Bug c++/70377] "unexpected AST" and "confused by earlier errors, bailing out" from throw in simple constexpr fn

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70377

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I've raised bug 80061 for the error GCC issues for the submitted test case
after the bug(s) in have been corrected.