fixup - missin ? and undefined lengths

tc39 · Mar 21, 2016 · cdfd3f6 · cdfd3f6
1 parent dd13557
commit cdfd3f6
Showing 1 changed file with 15 additions and 10 deletions.
diff --git a/spec.html b/spec.html
@@ -31596,11 +31596,13 @@ <h1>_TypedArray_ ( _length_ )</h1>
         <emu-alg>
           1. Assert: Type(_length_) is not Object.
           1. If NewTarget is *undefined*, throw a *TypeError* exception.
-          1. If _length_ is *undefined*, throw a *TypeError* exception.
-          1. Let _numberLength_ be ToNumber(_length_).
-          1. If _numberLength_ &lt; 0, throw a *RangeError* exception.
-          1. Let _elementLength_ be ? ToLength(_numberLength_).
-          1. If SameValueZero(_numberLength_, _elementLength_) is *false*, throw a *RangeError* exception.
+          1. If _length_ is either not present or  *undefined*, then
+            1. Let _elementLength_ be *0*.
+          1. Else,
+            1. Let _numberLength_ be ToNumber(_length_).
+            1. If _numberLength_ &lt; 0, throw a *RangeError* exception.
+            1. Let _elementLength_ be ? ToLength(_numberLength_).
+            1. If SameValueZero(_numberLength_, _elementLength_) is *false*, throw a *RangeError* exception.
           1. Let _constructorName_ be the String value of the Constructor Name value specified in <emu-xref href="#table-49"></emu-xref> for this <var>TypedArray</var> constructor.
           1. Return ? AllocateTypedArray(_constructorName_, NewTarget, <code>"%<var>TypedArray</var>Prototype%"</code>, _elementLength_).
         </emu-alg>
@@ -32993,10 +32995,13 @@ <h1>ArrayBuffer ( [ _length_ ] )</h1>
         <p>When the `ArrayBuffer` function is called with optional argument _length_, the following steps are taken:</p>
         <emu-alg>
           1. If NewTarget is *undefined*, throw a *TypeError* exception.
-          1. Let _numberLength_ be ToNumber(_length_).
-          1. If _numberLength_ &lt; 0, throw a *RangeError* exception.
-          1. Let _byteLength_ be ? ToLength(_numberLength_).
-          1. If SameValueZero(_numberLength_, _byteLength_) is *false*, throw a *RangeError* exception.
+          1. If _length_ is either not present or *undefined*, then
+            1. Let _byteLength_ be *0*.
+          1. Else,
+            1. Let _numberLength_ be ? ToNumber(_length_).
+            1. If _numberLength_ &lt; 0, throw a *RangeError* exception.
+            1. Let _byteLength_ be ? ToLength(_numberLength_).
+            1. If SameValueZero(_numberLength_, _byteLength_) is *false*, throw a *RangeError* exception.
           1. Return ? AllocateArrayBuffer(NewTarget, _byteLength_).
         </emu-alg>
       </emu-clause>
@@ -33186,7 +33191,7 @@ <h1>DataView (_buffer_ [ , _byteOffset_, _byteLength_ ] )</h1>
           1. If _byteLength_ is either not present or *undefined*, then
             1. Let _viewByteLength_ be _bufferByteLength_ - _offset_.
           1. Else,
-            1. Let _numberLength_ be ToNumber(_byteLength_).
+            1. Let _numberLength_ be ? ToNumber(_byteLength_).
             1. If _numberLength_ &lt; 0, throw a *RangeError* exception.
             1. Let _viewByteLength_ be ? ToLength(_numberLength_).
             1. If SameValueZero(_numberLength_, _viewByteLength_) is *false*, throw a *RangeError* exception.