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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.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: libcpp-no-exceptions
// <regex>
// template <class charT, class traits = regex_traits<charT>> class basic_regex;
// template <class ST, class SA>
// basic_regex(const basic_string<charT, ST, SA>& s);
#include <regex>
#include <cassert>
#include "test_macros.h"
static bool error_badbackref_thrown(const char *pat)
{
bool result = false;
try {
std::regex re(pat);
} catch (const std::regex_error &ex) {
result = (ex.code() == std::regex_constants::error_backref);
}
return result;
}
int main()
{
assert(error_badbackref_thrown("\\1abc")); // no references
assert(error_badbackref_thrown("ab(c)\\2def")); // only one reference
// this should NOT throw, because we only should look at the '1'
// See https://bugs.llvm.org/show_bug.cgi?id=31387
{
const char *pat1 = "a(b)c\\1234";
std::regex re(pat1, pat1 + 7); // extra chars after the end.
}
}
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