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