<regex>: Fix quadratic complexity in regex_search when regex starts with ? quantifier or several alternatives - #5457

<regex>: Fix quadratic complexity in regex_search when regex starts with ? quantifier or several alternatives#5457

Stephan T. Lavavej (StephanTLavavej) merged 2 commits into

microsoft:mainmicrosoft/STL:mainfrom

muellerj2:regex-matcher-skip-fix-quadratic-worst-casemuellerj2/STL:regex-matcher-skip-fix-quadratic-worst-caseCopy head branch name to clipboard