[Bug libstdc++/93502] std::regex_match uses stack space proportional to input string length

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93502

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Another question would be whether it's easy for the programmer to direct
> std::regex_match to use the heap?

No that's not possible.