Follow jsc in throwing an exception when using test or exec on a...

test/mjsunit/regexp-static.js

 // Copyright 2008 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
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+// Test that we throw exceptions when calling test and exec with no
+// input.  This is not part of the spec, but we do it for
+// compatibility with JSC.
+assertThrows("/a/.test()");
+assertThrows("/a/.exec()");
+
+// Test that we do not throw exceptions once the static RegExp.input
+// field has been set.
+RegExp.input = "a";
+assertDoesNotThrow("/a/.test()");
+assertDoesNotThrow("/a/.exec()");
+
 // Test the (deprecated as of JS 1.5) properties of the RegExp function.
 var re = /((\d+)\.(\d+))/;
 var s = 'abc123.456def';
 
 re.exec(s);
 
 assertEquals(s, RegExp.input);
 assertEquals('123.456', RegExp.lastMatch);
 assertEquals('456', RegExp.lastParen);
 assertEquals('abc', RegExp.leftContext);
@@ skipping 75 matching lines @@
 for (var i = 4; i < 10; ++i) {
   assertEquals('', RegExp['$' + i]);
 }
 
 // String.prototype.replace must interleave matching and replacing when a
 // global regexp is matched and replaced with the result of a function, in
 // case the function uses the static properties of the regexp constructor.
 re = /(.)/g;
 function f() { return RegExp.$1; };
 assertEquals('abcd', 'abcd'.replace(re, f));