__first != __last && ( __val = __traits_.value(*__first, 10)) != -1;
++__first)
{
+ if (__c >= std::numeric_limits<int>::max() / 10)
+ __throw_regex_error<regex_constants::error_badbrace>();
__c *= 10;
__c += __val;
}
--- /dev/null
+//===----------------------------------------------------------------------===//
+//
+// 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++03
+
+// the "n" in `a{n}` should be within the numeric limits.
+
+#include <regex>
+#include <cassert>
+
+int main() {
+ for (std::regex_constants::syntax_option_type op :
+ {std::regex::basic, std::regex::grep}) {
+ try {
+ (void)std::regex("a\\{100000000000000000\\}", op);
+ assert(false);
+ } catch (const std::regex_error &e) {
+ assert(e.code() == std::regex_constants::error_badbrace);
+ }
+ }
+ for (std::regex_constants::syntax_option_type op :
+ {std::regex::ECMAScript, std::regex::extended, std::regex::egrep,
+ std::regex::awk}) {
+ try {
+ (void)std::regex("a{100000000000000000}", op);
+ assert(false);
+ } catch (const std::regex_error &e) {
+ assert(e.code() == std::regex_constants::error_badbrace);
+ }
+ }
+ return 0;
+}