Make a strict function's "name" property non-writable.

test/mjsunit/regress/regress-1530.js

Index: test/mjsunit/regress/regress-1530.js
diff --git a/test/mjsunit/regress/regress-1530.js b/test/mjsunit/regress/regress-1530.js
index db2114450e4133371bc9045e0c409f5154333d01..a9bd9cf27ef920e419e0d96ade2286be86b804d9 100644
--- a/test/mjsunit/regress/regress-1530.js
+++ b/test/mjsunit/regress/regress-1530.js
@@ -62,8 +62,17 @@ assertSame(new f().foo, 'other');
 assertSame(Object.getPrototypeOf(new f()), z);
 assertSame(Object.getOwnPropertyDescriptor(f, 'prototype').value, z);
 
+// Verify that "name" is (initially) non-writable, but configurable.
+var fname = f.name;
+f.name = z;
+assertSame(fname, f.name);
+// Have to make "name"'s property descriptor explicitly writable
+// to alter its value in one go..shouldn't have to. Bug or grey
+// area of accessor resolution semantics?
+Object.defineProperty(f, 'name', { value: 'other', writable: true });
+assertSame('other', f.name);
+
 // Verify that non-writability of other properties is respected.
-assertThrows("Object.defineProperty(f, 'name', { value: {} })");
 assertThrows("Object.defineProperty(f, 'length', { value: {} })");
 assertThrows("Object.defineProperty(f, 'caller', { value: {} })");
 assertThrows("Object.defineProperty(f, 'arguments', { value: {} })");