[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 28_regex / iterators / regex_iterator / lwg3719.cc

// { dg-do run { target c++20 } }

#include <regex>
#include <iterator>
#include <testsuite_hooks.h>

// LWG 3719. Directory iterators should be usable with default sentinel

void
test_iter()
{
  std::sregex_token_iterator r0;
  VERIFY( r0 == std::default_sentinel );
  std::string haystack = "a needle in a haystack";
  std::regex needle("needle");
  std::sregex_iterator r1(haystack.begin(), haystack.end(), needle);
  VERIFY( r1 != std::default_sentinel );
  ++r1;
  VERIFY( r1 == std::default_sentinel );

  static_assert( noexcept(r0 == std::default_sentinel) ); // GCC extension
  static_assert( noexcept(r0 != std::default_sentinel) ); // GCC extension
}

int main()
{
  test_iter();
}
Commit	Line	Data
db33daa4 JW	1	// { dg-do run { target c++20 } }
	2
	3	#include <regex>
	4	#include <iterator>
	5	#include <testsuite_hooks.h>
	6
	7	// LWG 3719. Directory iterators should be usable with default sentinel
	8
	9	void
	10	test_iter()
	11	{
	12	std::sregex_token_iterator r0;
	13	VERIFY( r0 == std::default_sentinel );
	14	std::string haystack = "a needle in a haystack";
	15	std::regex needle("needle");
	16	std::sregex_iterator r1(haystack.begin(), haystack.end(), needle);
	17	VERIFY( r1 != std::default_sentinel );
	18	++r1;
	19	VERIFY( r1 == std::default_sentinel );
	20
	21	static_assert( noexcept(r0 == std::default_sentinel) ); // GCC extension
	22	static_assert( noexcept(r0 != std::default_sentinel) ); // GCC extension
	23	}
	24
	25	int main()
	26	{
	27	test_iter();
	28	}