Extend Annex B 3.3 sloppy-mode block-scoped hoisting to scripts, eval

test/mjsunit/harmony/block-sloppy-function.js

Index: test/mjsunit/harmony/block-sloppy-function.js
diff --git a/test/mjsunit/harmony/block-sloppy-function.js b/test/mjsunit/harmony/block-sloppy-function.js
index a17a4c0799c7d9bced58941597f0b150f532ee7b..ff895d5b8a24d44b0bf7c8f53a82ffb960eb7c47 100644
--- a/test/mjsunit/harmony/block-sloppy-function.js
+++ b/test/mjsunit/harmony/block-sloppy-function.js
@@ -146,13 +146,6 @@
   assertEquals(2, f());
 })();
 
-// Test that hoisting from blocks doesn't happen in global scope
-function globalUnhoisted() { return 0; }
-{
-  function globalUnhoisted() { return 1; }
-}
-assertEquals(0, globalUnhoisted());
-
 // Test that shadowing arguments is fine
 (function shadowArguments(x) {
   assertArrayEquals([1], arguments);
@@ -201,3 +194,109 @@ assertThrows(function notInDefaultScope(x = y) {
   assertEquals('function', typeof y);
   assertEquals(x, undefined);
 }, ReferenceError);
+
+// Test that hoisting from blocks does happen in global scope
+function globalHoisted() { return 0; }
+{
+  function globalHoisted() { return 1; }
+}
+assertEquals(1, globalHoisted());
+
+// Also happens when not previously defined
+assertEquals(undefined, globalUndefinedHoisted);
+{
+  function globalUndefinedHoisted() { return 1; }
+}
+assertEquals(1, globalUndefinedHoisted());
+var globalUndefinedHoistedDescriptor =
+    Object.getOwnPropertyDescriptor(this, "globalUndefinedHoisted");
+assertFalse(globalUndefinedHoistedDescriptor.configurable);
+assertTrue(globalUndefinedHoistedDescriptor.writable);
+assertTrue(globalUndefinedHoistedDescriptor.enumerable);
+assertEquals(1, globalUndefinedHoistedDescriptor.value());
+
+// When a function property is hoisted, it should be
+// made enumerable.
+// BUG(v8:4451)
+Object.defineProperty(this, "globalNonEnumerable", {
+  value: false,
+  configurable: true,
+  writable: true,
+  enumerable: false
+});
+eval("{function globalNonEnumerable() { return 1; }}");
+var globalNonEnumerableDescriptor
+    = Object.getOwnPropertyDescriptor(this, "globalNonEnumerable");
+// BUG(v8:4451): Should be made non-configurable
+assertTrue(globalNonEnumerableDescriptor.configurable);
+assertTrue(globalNonEnumerableDescriptor.writable);
+// BUG(v8:4451): Should be made enumerable
+assertFalse(globalNonEnumerableDescriptor.enumerable);
+assertEquals(1, globalNonEnumerableDescriptor.value());
+
+// When a function property is hoisted, it should be overwritten and
+// made writable and overwritten, even if the property was non-writable.
+Object.defineProperty(this, "globalNonWritable", {
+  value: false,
+  configurable: true,
+  writable: false,
+  enumerable: true
+});
+eval("{function globalNonWritable() { return 1; }}");
+var globalNonWritableDescriptor
+    = Object.getOwnPropertyDescriptor(this, "globalNonWritable");
+// BUG(v8:4451): Should be made non-configurable
+assertTrue(globalNonWritableDescriptor.configurable);
+// BUG(v8:4451): Should be made writable
+assertFalse(globalNonWritableDescriptor.writable);
+assertFalse(globalNonEnumerableDescriptor.enumerable);
+// BUG(v8:4451): Should be overwritten
+assertEquals(false, globalNonWritableDescriptor.value);
+
+// Test that hoisting from blocks does happen in an eval
+eval(`
+  function evalHoisted() { return 0; }
+  {
+    function evalHoisted() { return 1; }
+  }
+  assertEquals(1, evalHoisted());
+`);
+
+// Test that hoisting from blocks happens from eval in a function
+!function() {
+  eval(`
+    function evalInFunctionHoisted() { return 0; }
+    {
+      function evalInFunctionHoisted() { return 1; }
+    }
+    assertEquals(1, evalInFunctionHoisted());
+  `);
+}();
+
+let dontHoistGlobal;
+{ function dontHoistGlobal() {} }
+assertEquals(undefined, dontHoistGlobal);
+
+let dontHoistEval;
+// BUG(v8:) This shouldn't hoist and shouldn't throw
+var throws = false;
+try {
+  eval("{ function dontHoistEval() {} }");
+} catch (e) {
+  throws = true;
+}
+assertTrue(throws);
+
+// When the global object is frozen, silently don't hoist
+// Currently this actually throws BUG(v8:4452)
+Object.freeze(this);
+throws = false;
+try {
+  eval('{ function hoistWhenFrozen() {} }');
+} catch (e) {
+  throws = true;
+}
+assertFalse(this.hasOwnProperty("hoistWhenFrozen"));
+assertThrows(() => hoistWhenFrozen, ReferenceError);
+// Should be assertFalse BUG(v8:4452)
+assertTrue(throws);