--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/joni/exception/ErrorMessages.java	2018-06-05 14:15:57.000000000 +0200
+++ new/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/joni/exception/ErrorMessages.java	2018-06-05 14:15:57.000000000 +0200
@@ -31,6 +31,7 @@
     final String ERR_PARSER_BUG = "internal parser error (bug)";
     final String ERR_UNDEFINED_BYTECODE = "undefined bytecode (bug)";
     final String ERR_UNEXPECTED_BYTECODE = "unexpected bytecode (bug)";
+    final String ERR_TOO_MANY_CAPTURE_GROUPS = "too many capture groups";
 
     /* syntax error */
     final String ERR_END_PATTERN_AT_LEFT_BRACE = "end pattern at left brace";