28 Text processing library [text]

28.6 Regular expressions library [re]

28.6.10 Regular expression algorithms [re.alg]

28.6.10.1 Exceptions [re.except]

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The algorithms described in subclause [re.alg] may throw an exception of type regex_error.
If such an exception e is thrown, e.code() shall return either regex_constants​::​error_complexity or regex_constants​::​error_stack.