Merge up to 8597 to experimental/gc from the bleeding edge.

test/mjsunit/regress/regress-892742.js

Index: test/mjsunit/regress/regress-892742.js
===================================================================
--- test/mjsunit/regress/regress-892742.js	(revision 8618)
+++ test/mjsunit/regress/regress-892742.js	(working copy)
@@ -26,25 +26,23 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 function f() {
-  return/* useless*/1;
+  return/* Counts as non-line-terminating whitespace */1;
 };
 
-
-// According to ECMA-262, this comment should actually be parsed as a
-// line terminator making g() return undefined, but this is not the
-// way it's handled by Spidermonkey or KJS.
+// According to ECMA-262, this comment should be parsed as a
+// line terminator making g() return undefined.
 function g() {
-  return/* useless
-         */2;
+  return/* Counts as line-terminator whitespace.
+          */2;
 };
 
 function h() {
-  return// meaningful
+  return// Comment doesn't include line-terminator at end.
       3;
 };
 
 
 assertEquals(1, f());
-assertEquals(2, g());
-assertTrue(typeof h() == 'undefined', 'h');
+assertEquals(undefined, g());
+assertEquals(undefined, h());