diff --git a/testsrc/org/mozilla/javascript/tests/Test262SuiteTest.java b/testsrc/org/mozilla/javascript/tests/Test262SuiteTest.java
index 70ee634479..83c4817885 100644
--- a/testsrc/org/mozilla/javascript/tests/Test262SuiteTest.java
+++ b/testsrc/org/mozilla/javascript/tests/Test262SuiteTest.java
@@ -111,7 +111,6 @@ public class Test262SuiteTest {
                             "regexp-lookbehind",
                             "regexp-named-groups",
                             "regexp-unicode-property-escapes",
-                            "rest-parameters",
                             "super",
                             "String.prototype.matchAll",
                             "Symbol.matchAll",
diff --git a/testsrc/test262.properties b/testsrc/test262.properties
index 322e1ab255..3770a6fbc5 100644
--- a/testsrc/test262.properties
+++ b/testsrc/test262.properties
@@ -3045,7 +3045,7 @@ language/expressions/addition 9/48 (18.75%)
     get-symbol-to-prim-err.js
     order-of-evaluation.js
 
-language/expressions/arrow-function 210/333 (63.06%)
+language/expressions/arrow-function 209/333 (62.76%)
     dstr/ary-init-iter-close.js
     dstr/ary-init-iter-get-err.js
     dstr/ary-init-iter-get-err-array-prototype.js
@@ -3224,7 +3224,7 @@ language/expressions/arrow-function 210/333 (63.06%)
     syntax/arrowparameters-cover-initialize-2.js
     syntax/arrowparameters-cover-rest-concisebody-functionbody.js
     syntax/arrowparameters-cover-rest-lineterminator-concisebody-functionbody.js
-    array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    array-destructuring-param-strict-body.js
     ArrowFunction_restricted-properties.js
     dflt-params-abrupt.js {unsupported: [default-parameters]}
     dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters]}
@@ -3243,12 +3243,11 @@ language/expressions/arrow-function 210/333 (63.06%)
     lexical-super-property.js
     lexical-super-property-from-within-constructor.js
     lexical-supercall-from-immediately-invoked-arrow.js
-    object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    object-destructuring-param-strict-body.js
     param-dflt-yield-expr.js {unsupported: [default-parameters]}
     param-dflt-yield-id-non-strict.js {unsupported: [default-parameters]}
     param-dflt-yield-id-strict.js {unsupported: [default-parameters]}
     params-duplicate.js non-strict
-    rest-param-strict-body.js {unsupported: [rest-parameters]}
     scope-body-lex-distinct.js non-strict
     scope-param-elem-var-close.js non-strict
     scope-param-elem-var-open.js non-strict
@@ -3645,7 +3644,7 @@ language/expressions/function 203/248 (81.85%)
     early-errors 4/4 (100.0%)
     arguments-with-arguments-fn.js non-strict
     arguments-with-arguments-lex.js non-strict
-    array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    array-destructuring-param-strict-body.js
     dflt-params-abrupt.js {unsupported: [default-parameters]}
     dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters]}
     dflt-params-arg-val-undefined.js {unsupported: [default-parameters]}
@@ -3659,7 +3658,7 @@ language/expressions/function 203/248 (81.85%)
     length-dflt.js {unsupported: [default-parameters]}
     name-arguments-strict-body.js non-strict
     name-eval-strict-body.js non-strict
-    object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    object-destructuring-param-strict-body.js
     param-dflt-yield-non-strict.js {unsupported: [default-parameters]}
     param-dflt-yield-strict.js {unsupported: [default-parameters]}
     param-duplicated-strict-body-1.js non-strict
@@ -3668,7 +3667,7 @@ language/expressions/function 203/248 (81.85%)
     param-eval-strict-body.js non-strict
     params-dflt-args-unmapped.js {unsupported: [default-parameters]}
     params-dflt-ref-arguments.js {unsupported: [default-parameters]}
-    rest-param-strict-body.js {unsupported: [rest-parameters]}
+    rest-param-strict-body.js
     scope-body-lex-distinct.js non-strict
     scope-name-var-open-non-strict.js non-strict
     scope-name-var-open-strict.js strict
@@ -3855,7 +3854,7 @@ language/expressions/generators 227/275 (82.55%)
     dstr/obj-ptrn-rest-val-obj.js {unsupported: [object-rest]}
     arguments-with-arguments-fn.js non-strict
     arguments-with-arguments-lex.js non-strict
-    array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    array-destructuring-param-strict-body.js
     default-proto.js
     dflt-params-abrupt.js {unsupported: [default-parameters]}
     dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters]}
@@ -3878,7 +3877,7 @@ language/expressions/generators 227/275 (82.55%)
     named-yield-spread-arr-multiple.js
     named-yield-spread-arr-single.js
     named-yield-spread-obj.js
-    object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    object-destructuring-param-strict-body.js
     param-dflt-yield.js {unsupported: [default-parameters]}
     params-dflt-args-unmapped.js {unsupported: [default-parameters]}
     params-dflt-ref-arguments.js {unsupported: [default-parameters]}
@@ -3887,7 +3886,7 @@ language/expressions/generators 227/275 (82.55%)
     prototype-own-properties.js
     prototype-relation-to-function.js
     prototype-value.js
-    rest-param-strict-body.js {unsupported: [rest-parameters]}
+    rest-param-strict-body.js
     scope-body-lex-distinct.js non-strict
     scope-name-var-close.js non-interpreted
     scope-name-var-open-non-strict.js non-strict
@@ -3962,7 +3961,7 @@ language/expressions/multiplication 4/40 (10.0%)
     bigint-wrapped-values.js {unsupported: [computed-property-names]}
     order-of-evaluation.js
 
-language/expressions/object 839/1081 (77.61%)
+language/expressions/object 836/1081 (77.34%)
     dstr/async-gen-meth-ary-init-iter-close.js {unsupported: [async-iteration, async]}
     dstr/async-gen-meth-ary-init-iter-get-err.js {unsupported: [async-iteration]}
     dstr/async-gen-meth-ary-init-iter-get-err-array-prototype.js {unsupported: [async-iteration]}
@@ -4506,7 +4505,7 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/async-gen-await-as-identifier-reference-escaped.js {unsupported: [async-iteration]}
     method-definition/async-gen-await-as-label-identifier.js {unsupported: [async-iteration]}
     method-definition/async-gen-await-as-label-identifier-escaped.js {unsupported: [async-iteration]}
-    method-definition/async-gen-meth-array-destructuring-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-gen-meth-array-destructuring-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-gen-meth-dflt-params-abrupt.js {unsupported: [default-parameters, async-iteration]}
     method-definition/async-gen-meth-dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters, async-iteration, async]}
     method-definition/async-gen-meth-dflt-params-arg-val-undefined.js {unsupported: [default-parameters, async-iteration, async]}
@@ -4518,10 +4517,10 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/async-gen-meth-dflt-params-trailing-comma.js {unsupported: [async-iteration, async]}
     method-definition/async-gen-meth-escaped-async.js {unsupported: [async-iteration]}
     method-definition/async-gen-meth-eval-var-scope-syntax-err.js {unsupported: [default-parameters, async-iteration]}
-    method-definition/async-gen-meth-object-destructuring-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-gen-meth-object-destructuring-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-gen-meth-params-trailing-comma-multiple.js {unsupported: [async-iteration, async]}
     method-definition/async-gen-meth-params-trailing-comma-single.js {unsupported: [async-iteration, async]}
-    method-definition/async-gen-meth-rest-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-gen-meth-rest-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-gen-meth-rest-params-trailing-comma-early-error.js {unsupported: [async-iteration]}
     method-definition/async-gen-yield-as-binding-identifier.js {unsupported: [async-iteration]}
     method-definition/async-gen-yield-as-binding-identifier-escaped.js {unsupported: [async-iteration]}
@@ -4598,7 +4597,7 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/async-gen-yield-star-sync-next.js {unsupported: [async-iteration, async]}
     method-definition/async-gen-yield-star-sync-return.js {unsupported: [async-iteration, async]}
     method-definition/async-gen-yield-star-sync-throw.js {unsupported: [async-iteration, async]}
-    method-definition/async-meth-array-destructuring-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-meth-array-destructuring-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-meth-dflt-params-abrupt.js {unsupported: [default-parameters, async-functions, async]}
     method-definition/async-meth-dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters, async-functions, async]}
     method-definition/async-meth-dflt-params-arg-val-undefined.js {unsupported: [default-parameters, async-functions, async]}
@@ -4610,10 +4609,10 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/async-meth-dflt-params-trailing-comma.js {unsupported: [async-functions, async]}
     method-definition/async-meth-escaped-async.js {unsupported: [async-functions]}
     method-definition/async-meth-eval-var-scope-syntax-err.js {unsupported: [default-parameters, async-functions, async]}
-    method-definition/async-meth-object-destructuring-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-meth-object-destructuring-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-meth-params-trailing-comma-multiple.js {unsupported: [async-functions, async]}
     method-definition/async-meth-params-trailing-comma-single.js {unsupported: [async-functions, async]}
-    method-definition/async-meth-rest-param-strict-body.js {unsupported: [rest-parameters, async-iteration]}
+    method-definition/async-meth-rest-param-strict-body.js {unsupported: [async-iteration]}
     method-definition/async-meth-rest-params-trailing-comma-early-error.js {unsupported: [async-iteration]}
     method-definition/async-super-call-body.js {unsupported: [async]}
     method-definition/async-super-call-param.js {unsupported: [async]}
@@ -4628,7 +4627,6 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/escaped-set-t.js
     method-definition/fn-name-fn.js
     method-definition/fn-name-gen.js
-    method-definition/gen-meth-array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
     method-definition/gen-meth-dflt-params-abrupt.js {unsupported: [default-parameters]}
     method-definition/gen-meth-dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters]}
     method-definition/gen-meth-dflt-params-arg-val-undefined.js {unsupported: [default-parameters]}
@@ -4639,10 +4637,8 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/gen-meth-dflt-params-rest.js {unsupported: [default-parameters]}
     method-definition/gen-meth-dflt-params-trailing-comma.js
     method-definition/gen-meth-eval-var-scope-syntax-err.js {unsupported: [default-parameters]}
-    method-definition/gen-meth-object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
     method-definition/gen-meth-params-trailing-comma-multiple.js
     method-definition/gen-meth-params-trailing-comma-single.js
-    method-definition/gen-meth-rest-param-strict-body.js {unsupported: [rest-parameters]}
     method-definition/gen-yield-identifier-non-strict.js non-strict
     method-definition/gen-yield-identifier-spread-non-strict.js non-strict
     method-definition/gen-yield-spread-arr-multiple.js
@@ -4666,7 +4662,7 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/generator-return.js
     method-definition/generator-super-prop-body.js
     method-definition/generator-super-prop-param.js {unsupported: [super, default-parameters]}
-    method-definition/meth-array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    method-definition/meth-array-destructuring-param-strict-body.js
     method-definition/meth-dflt-params-abrupt.js {unsupported: [default-parameters]}
     method-definition/meth-dflt-params-arg-val-not-undefined.js {unsupported: [default-parameters]}
     method-definition/meth-dflt-params-arg-val-undefined.js {unsupported: [default-parameters]}
@@ -4677,8 +4673,8 @@ language/expressions/object 839/1081 (77.61%)
     method-definition/meth-dflt-params-rest.js {unsupported: [default-parameters]}
     method-definition/meth-dflt-params-trailing-comma.js
     method-definition/meth-eval-var-scope-syntax-err.js {unsupported: [default-parameters]}
-    method-definition/meth-object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
-    method-definition/meth-rest-param-strict-body.js {unsupported: [rest-parameters]}
+    method-definition/meth-object-destructuring-param-strict-body.js
+    method-definition/meth-rest-param-strict-body.js
     method-definition/name-invoke-ctor.js
     method-definition/name-invoke-fn-strict.js non-strict
     method-definition/name-length-dflt.js {unsupported: [default-parameters]}
@@ -6135,7 +6131,7 @@ language/statements/generators 220/259 (84.94%)
     dstr/obj-ptrn-rest-val-obj.js {unsupported: [object-rest]}
     arguments-with-arguments-fn.js non-strict
     arguments-with-arguments-lex.js non-strict
-    array-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    array-destructuring-param-strict-body.js
     cptn-decl.js
     default-proto.js
     dflt-params-abrupt.js {unsupported: [default-parameters]}
@@ -6152,7 +6148,7 @@ language/statements/generators 220/259 (84.94%)
     has-instance.js
     invoke-as-constructor.js
     length-dflt.js {unsupported: [default-parameters]}
-    object-destructuring-param-strict-body.js {unsupported: [rest-parameters]}
+    object-destructuring-param-strict-body.js
     param-dflt-yield.js {unsupported: [default-parameters]}
     params-dflt-args-unmapped.js {unsupported: [default-parameters]}
     params-dflt-ref-arguments.js {unsupported: [default-parameters]}
@@ -6161,7 +6157,7 @@ language/statements/generators 220/259 (84.94%)
     prototype-own-properties.js
     prototype-relation-to-function.js
     prototype-value.js
-    rest-param-strict-body.js {unsupported: [rest-parameters]}
+    rest-param-strict-body.js
     restricted-properties.js
     scope-body-lex-distinct.js non-strict
     scope-param-elem-var-close.js non-strict