[Bug libstdc++/86130] Expect SIGSEGV but program just silently exits

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86130

--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #13)
> This is not an accident, it's a supported feature (and arguably documented,
> by the code and the test).

See also Bug 6518 which changed the segfault to setting failbit (and introduced
a regression) and Bug 6750 which introduced the current behaviour.