--- a/nashorn/src/jdk/nashorn/internal/runtime/regexp/joni/Parser.java	Thu Apr 18 15:50:30 2013 +0530
+++ b/nashorn/src/jdk/nashorn/internal/runtime/regexp/joni/Parser.java	Thu Apr 18 14:25:45 2013 +0200
@@ -287,7 +287,10 @@
 
                     if (syntax.allowDoubleRangeOpInCC()) {
                         env.ccEscWarn("-");
-                        parseCharClassSbChar(cc, arg); // goto sb_char /* [0-9-a] is allowed as [0-9\-a] */
+                        arg.inType = CCVALTYPE.SB;
+                        arg.v = '-';
+                        arg.vIsRaw = false;
+                        parseCharClassValEntry2(cc, arg); // goto val_entry2 /* [0-9-a] is allowed as [0-9\-a] */
                         break;
                     }
                     newSyntaxException(ERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS);

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8012460.js	Thu Apr 18 14:25:45 2013 +0200
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8012460: RegExp regression
+ *
+ * @test
+ * @run
+ */
+
+
+var semver = "\\s*[v=]*\\s*([0-9]+)" // major
+        + "\\.([0-9]+)" // minor
+        + "\\.([0-9]+)" // patch
+        + "(-[0-9]+-?)?" // build
+        + "([a-zA-Z-+][a-zA-Z0-9-\.:]*)?" // tag
+    , exprComparator = "^((<|>)?=?)\s*("+semver+")$|^$";
+var validComparator = new RegExp("^"+exprComparator+"$");
+
+
+print(exprComparator);
+print(">=0.6.0-".match(validComparator));
+print("=0.6.0-".match(validComparator));
+print("0.6.0-".match(validComparator));
+print("<=0.6.0-".match(validComparator));
+print(">=0.6.0-a:b-c.d".match(validComparator));
+print("=0.6.0-a:b-c.d".match(validComparator));
+print("0.6.0+a:b-c.d".match(validComparator));
+print("<=0.6.0+a:b-c.d".match(validComparator));
+
+print(/[a-zA-Z-+]/.exec("a"));
+print(/[a-zA-Z-+]/.exec("b"));
+print(/[a-zA-Z-+]/.exec("y"));
+print(/[a-zA-Z-+]/.exec("z"));
+print(/[a-zA-Z-+]/.exec("B"));
+print(/[a-zA-Z-+]/.exec("Y"));
+print(/[a-zA-Z-+]/.exec("Z"));
+print(/[a-zA-Z-+]/.exec("-"));
+print(/[a-zA-Z-+]/.exec("+"));

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/JDK-8012460.js.EXPECTED	Thu Apr 18 14:25:45 2013 +0200
@@ -0,0 +1,18 @@
+^((<|>)?=?)s*(\s*[v=]*\s*([0-9]+)\.([0-9]+)\.([0-9]+)(-[0-9]+-?)?([a-zA-Z-+][a-zA-Z0-9-.:]*)?)$|^$
+>=0.6.0-,>=,>,0.6.0-,0,6,0,,-
+=0.6.0-,=,,0.6.0-,0,6,0,,-
+0.6.0-,,,0.6.0-,0,6,0,,-
+<=0.6.0-,<=,<,0.6.0-,0,6,0,,-
+>=0.6.0-a:b-c.d,>=,>,0.6.0-a:b-c.d,0,6,0,,-a:b-c.d
+=0.6.0-a:b-c.d,=,,0.6.0-a:b-c.d,0,6,0,,-a:b-c.d
+0.6.0+a:b-c.d,,,0.6.0+a:b-c.d,0,6,0,,+a:b-c.d
+<=0.6.0+a:b-c.d,<=,<,0.6.0+a:b-c.d,0,6,0,,+a:b-c.d
+a
+b
+y
+z
+B
+Y
+Z
+-
++