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PR libstdc++/64441 * include/bits/regex.h (match_results<>::size, match_results<>::position, match_results<>::str, match_results<>::operator[], match_results<>::prefix, match_results<>::suffix, match_results<>::end, match_results<>::_M_resize, match_results<>::_M_unmatched_sub, match_results<>::_M_prefix, match_results<>::_M_suffix): Remove global __unmatched_sub. Add unmatched submatch as part of match_results. * include/bits/regex.tcc (__regex_algo_impl<>, regex_replace<>, regex_iterator<>::operator++): Adjust to use match_results::_M_prefix. * testsuite/28_regex/match_results/out_of_range_submatches.cc: New testcases. From-SVN: r221330
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.