1 files changed, 41 insertions, 0 deletions
diff --git a/test/std/re/re.grammar/excessive_brace_count.pass.cpp b/test/std/re/re.grammar/excessive_brace_count.pass.cpp
new file mode 100644
index 000000000000..597182e7e096
--- /dev/null
+++ b/test/std/re/re.grammar/excessive_brace_count.pass.cpp
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+#include "test_macros.h"
+
+int main() {
+  for (std::regex_constants::syntax_option_type op :
+       {std::regex::basic, std::regex::grep}) {
+    try {
+      TEST_IGNORE_NODISCARD 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 {
+      TEST_IGNORE_NODISCARD std::regex("a{100000000000000000}", op);
+      assert(false);
+    } catch (const std::regex_error &e) {
+      assert(e.code() == std::regex_constants::error_badbrace);
+    }
+  }
+  return 0;
+}