Robuta

https://sourceware.org/legacy-ml/libc-alpha/2019-01/msg00284.html
signal handlerszabolcsnagyfwd
https://github.com/curl/curl/pull/18774
Turns out the signal handler on Windows still wasn't signal safe after the previous round of fix. There is an open() call made from there, and open happens...
signal handlertestsserverdropunsafe