1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: libcpp-no-exceptions 10 // <regex> 11 12 // template <class charT, class traits = regex_traits<charT>> class basic_regex; 13 14 // template <class ST, class SA> 15 // basic_regex(const basic_string<charT, ST, SA>& s); 16 17 #include <regex> 18 #include <cassert> 19 #include "test_macros.h" 20 21 static bool error_badbackref_thrown(const char *pat) 22 { 23 bool result = false; 24 try { 25 std::regex re(pat); 26 } catch (const std::regex_error &ex) { 27 result = (ex.code() == std::regex_constants::error_backref); 28 } 29 return result; 30 } 31 32 int main(int, char**) 33 { 34 assert(error_badbackref_thrown("\\1abc")); // no references 35 assert(error_badbackref_thrown("ab(c)\\2def")); // only one reference 36 assert(error_badbackref_thrown("\\800000000000000000000000000000")); // overflows 37 38 // this should NOT throw, because we only should look at the '1' 39 // See https://bugs.llvm.org/show_bug.cgi?id=31387 40 { 41 const char *pat1 = "a(b)c\\1234"; 42 std::regex re(pat1, pat1 + 7); // extra chars after the end. 43 } 44 45 return 0; 46 } 47