[Bug libstdc++/61601] C++11 regex resource exhaustion

[max at cert dot cx]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61601

--- Comment #6 from Maksymilian Arciemowicz <max at cert dot cx> ---

> Do you have any other testcases?

for trunk? maybe you have to use ::regex_match