4aebb4e4a6
PR libstdc++/77356 * include/bits/regex_compiler.tcc(_M_insert_bracket_matcher, _M_expression_term): Modify to support dash literal. * include/bits/regex_scanner.h: Add dash as a token type to make a different from the mandated dash literal by escaping. * include/bits/regex_scanner.tcc(_M_scan_in_bracket): Emit dash token in bracket expression parsing. * testsuite/28_regex/regression.cc: Add new testcases. From-SVN: r239794