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49 lines
1.7 KiB
49 lines
1.7 KiB
4 months ago
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <regex>
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// UNSUPPORTED: libcpp-no-exceptions
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// UNSUPPORTED: c++98, c++03
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// template <class BidirectionalIterator, class Allocator, class charT, class traits>
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// bool
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// regex_search(BidirectionalIterator first, BidirectionalIterator last,
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// match_results<BidirectionalIterator, Allocator>& m,
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// const basic_regex<charT, traits>& e,
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// regex_constants::match_flag_type flags = regex_constants::match_default);
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// Throw exception after spent too many cycles with respect to the length of the input string.
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#include <regex>
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#include <cassert>
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int main() {
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for (std::regex_constants::syntax_option_type op :
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{std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
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std::regex::awk}) {
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try {
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std::regex_search(
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"aaaaaaaaaaaaaaaaaaaa",
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std::regex(
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"a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?a?aaaaaaaaaaaaaaaaaaaa",
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op));
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assert(false);
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} catch (const std::regex_error &e) {
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assert(e.code() == std::regex_constants::error_complexity);
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}
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}
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std::string s(100000, 'a');
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for (std::regex_constants::syntax_option_type op :
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{std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
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std::regex::awk}) {
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assert(std::regex_search(s, std::regex("a*", op)));
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}
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return 0;
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}
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