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<div id="msg">

<dl class="meta">

<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/214259">214259</a></dd>

<dt>Author</dt> <dd>jfbastien@apple.com</dd>

<dt>Date</dt> <dd>2017-03-22 10:52:55 -0700 (Wed, 22 Mar 2017)</dd>

</dl>

<h3>Log Message</h3>

<pre>WebAssembly: constructors without new don't throw

https://bugs.webkit.org/show_bug.cgi?id=165995

Reviewed by Saam Barati.

JSTests:

* wasm/js-api/test_basic_api.js:

(const.c.in.constructorProperties.switch):

Source/JavaScriptCore:

* wasm/js/WebAssemblyCompileErrorConstructor.cpp:

(JSC::constructJSWebAssemblyCompileError):

(JSC::callJSWebAssemblyCompileError):

* wasm/js/WebAssemblyLinkErrorConstructor.cpp:

(JSC::constructJSWebAssemblyLinkError):

(JSC::callJSWebAssemblyLinkError):

* wasm/js/WebAssemblyRuntimeErrorConstructor.cpp:

(JSC::constructJSWebAssemblyRuntimeError):

(JSC::callJSWebAssemblyRuntimeError):</pre>

<h3>Modified Paths</h3>

<ul>

<li><a href="#trunkJSTestsChangeLog">trunk/JSTests/ChangeLog</a></li>

<li><a href="#trunkJSTestswasmjsapitest_basic_apijs">trunk/JSTests/wasm/js-api/test_basic_api.js</a></li>

<li><a href="#trunkSourceJavaScriptCoreChangeLog">trunk/Source/JavaScriptCore/ChangeLog</a></li>

<li><a href="#trunkSourceJavaScriptCorewasmjsWebAssemblyCompileErrorConstructorcpp">trunk/Source/JavaScriptCore/wasm/js/WebAssemblyCompileErrorConstructor.cpp</a></li>

<li><a href="#trunkSourceJavaScriptCorewasmjsWebAssemblyLinkErrorConstructorcpp">trunk/Source/JavaScriptCore/wasm/js/WebAssemblyLinkErrorConstructor.cpp</a></li>

<li><a href="#trunkSourceJavaScriptCorewasmjsWebAssemblyRuntimeErrorConstructorcpp">trunk/Source/JavaScriptCore/wasm/js/WebAssemblyRuntimeErrorConstructor.cpp</a></li>

</ul>

</div>

<div id="patch">

<h3>Diff</h3>

<a id="trunkJSTestsChangeLog"></a>

<div class="modfile"><h4>Modified: trunk/JSTests/ChangeLog (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/JSTests/ChangeLog        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/JSTests/ChangeLog        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -1,3 +1,13 @@

</span><ins>+2017-03-22  JF Bastien  &lt;jfbastien@apple.com&gt;

+

+        WebAssembly: constructors without new don't throw

+        https://bugs.webkit.org/show_bug.cgi?id=165995

+

+        Reviewed by Saam Barati.

+

+        * wasm/js-api/test_basic_api.js:

+        (const.c.in.constructorProperties.switch):

+

</ins><span class="cx"> 2017-03-21  Yusuke Suzuki  &lt;utatane.tea@gmail.com&gt;

</span><span class="cx"> 

</span><span class="cx">         [JSC] Optimize Number.prototype.toString on Int32 / Int52 / Double

</span></span></pre></div>

<a id="trunkJSTestswasmjsapitest_basic_apijs"></a>

<div class="modfile"><h4>Modified: trunk/JSTests/wasm/js-api/test_basic_api.js (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/JSTests/wasm/js-api/test_basic_api.js        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/JSTests/wasm/js-api/test_basic_api.js        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -49,7 +49,10 @@

</span><span class="cx">     assert.eq(WebAssembly[c].length, constructorProperties[c].length);

</span><span class="cx">     checkOwnPropertyDescriptor(WebAssembly, c, constructorProperties[c]);

</span><span class="cx">     checkOwnPropertyDescriptor(WebAssembly[c], &quot;prototype&quot;, { typeofvalue: &quot;object&quot;, writable: false, configurable: false, enumerable: false });

</span><del>-    assert.throws(() =&gt; WebAssembly[c](), TypeError, `calling WebAssembly.${c} constructor without new is invalid`);

</del><ins>+    if ([&quot;CompileError&quot;, &quot;LinkError&quot;, &quot;RuntimeError&quot;].indexOf(c) &gt;= 0)

+        WebAssembly[c](); // Per spec, the WebAssembly.*Error types match ye olden JavaScript NativeError behavior: they can be constructed without `new`.

+    else

+        assert.throws(() =&gt; WebAssembly[c](), TypeError, `calling WebAssembly.${c} constructor without new is invalid`);

</ins><span class="cx">     switch (c) {

</span><span class="cx">     case &quot;Module&quot;:

</span><span class="cx">         for (const invalid of invalidConstructorInputs)

</span><span class="lines">@@ -86,15 +89,28 @@

</span><span class="cx">     case &quot;CompileError&quot;:

</span><span class="cx">     case &quot;LinkError&quot;:

</span><span class="cx">     case &quot;RuntimeError&quot;: {

</span><del>-        const e = new WebAssembly[c];

-        assert.eq(e instanceof WebAssembly[c], true);

-        assert.eq(e instanceof Error, true);

-        assert.eq(e instanceof TypeError, false);

-        assert.eq(e.message, &quot;&quot;);

-        assert.eq(typeof e.stack, &quot;string&quot;);

-        const sillyString = &quot;uh-oh!&quot;;

-        const e2 = new WebAssembly[c](sillyString);

-        // FIXME fix Compile / Runtime errors for this: assert.eq(e2.message, sillyString + &quot; (evaluating 'new WebAssembly[c](sillyString)')&quot;);

</del><ins>+        {

+            const e = new WebAssembly[c];

+            assert.eq(e instanceof WebAssembly[c], true);

+            assert.eq(e instanceof Error, true);

+            assert.eq(e instanceof TypeError, false);

+            assert.eq(e.message, &quot;&quot;);

+            assert.eq(typeof e.stack, &quot;string&quot;);

+            const sillyString = &quot;uh-oh!&quot;;

+            const e2 = new WebAssembly[c](sillyString);

+            assert.eq(e2.message, sillyString + &quot; (evaluating 'new WebAssembly[c](sillyString)')&quot;);

+        }

+        {

+            const e = WebAssembly[c]();

+            assert.eq(e instanceof WebAssembly[c], true);

+            assert.eq(e instanceof Error, true);

+            assert.eq(e instanceof TypeError, false);

+            assert.eq(e.message, &quot;&quot;);

+            assert.eq(typeof e.stack, &quot;string&quot;);

+            const sillyString = &quot;uh-oh!&quot;;

+            const e2 = WebAssembly[c](sillyString);

+            assert.eq(e2.message, sillyString);

+        }

</ins><span class="cx">     } break;

</span><span class="cx">     default: throw new Error(`Implementation error: unexpected constructor property &quot;${c}&quot;`);

</span><span class="cx">     }

</span></span></pre></div>

<a id="trunkSourceJavaScriptCoreChangeLog"></a>

<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/ChangeLog (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/Source/JavaScriptCore/ChangeLog        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/Source/JavaScriptCore/ChangeLog        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -1,3 +1,20 @@

</span><ins>+2017-03-22  JF Bastien  &lt;jfbastien@apple.com&gt;

+

+        WebAssembly: constructors without new don't throw

+        https://bugs.webkit.org/show_bug.cgi?id=165995

+

+        Reviewed by Saam Barati.

+

+        * wasm/js/WebAssemblyCompileErrorConstructor.cpp:

+        (JSC::constructJSWebAssemblyCompileError):

+        (JSC::callJSWebAssemblyCompileError):

+        * wasm/js/WebAssemblyLinkErrorConstructor.cpp:

+        (JSC::constructJSWebAssemblyLinkError):

+        (JSC::callJSWebAssemblyLinkError):

+        * wasm/js/WebAssemblyRuntimeErrorConstructor.cpp:

+        (JSC::constructJSWebAssemblyRuntimeError):

+        (JSC::callJSWebAssemblyRuntimeError):

+

</ins><span class="cx"> 2017-03-22  Guillaume Emont  &lt;guijemont@igalia.com&gt;

</span><span class="cx"> 

</span><span class="cx">         [DFG] Don't use ArraySlice intrinsic on MIPS

</span></span></pre></div>

<a id="trunkSourceJavaScriptCorewasmjsWebAssemblyCompileErrorConstructorcpp"></a>

<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/wasm/js/WebAssemblyCompileErrorConstructor.cpp (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/Source/JavaScriptCore/wasm/js/WebAssemblyCompileErrorConstructor.cpp        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/Source/JavaScriptCore/wasm/js/WebAssemblyCompileErrorConstructor.cpp        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -1,5 +1,5 @@

</span><span class="cx"> /*

</span><del>- * Copyright (C) 2016 Apple Inc. All rights reserved.

</del><ins>+ * Copyright (C) 2016-2017 Apple Inc. All rights reserved.

</ins><span class="cx">  *

</span><span class="cx">  * Redistribution and use in source and binary forms, with or without

</span><span class="cx">  * modification, are permitted provided that the following conditions

</span><span class="lines">@@ -44,21 +44,21 @@

</span><span class="cx">  @end

</span><span class="cx">  */

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyCompileError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyCompileError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    auto&amp; vm = state-&gt;vm();

</del><ins>+    auto&amp; vm = exec-&gt;vm();

</ins><span class="cx">     auto scope = DECLARE_THROW_SCOPE(vm);

</span><del>-    JSValue message = state-&gt;argument(0);

-    auto* structure = InternalFunction::createSubclassStructure(state, state-&gt;newTarget(), asInternalFunction(state-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyCompileErrorStructure());

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    auto* structure = InternalFunction::createSubclassStructure(exec, exec-&gt;newTarget(), asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyCompileErrorStructure());

</ins><span class="cx">     RETURN_IF_EXCEPTION(scope, encodedJSValue());

</span><del>-    return JSValue::encode(JSWebAssemblyCompileError::create(state, vm, structure, message));

</del><ins>+    return JSValue::encode(JSWebAssemblyCompileError::create(exec, vm, structure, message));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyCompileError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyCompileError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    VM&amp; vm = state-&gt;vm();

-    auto scope = DECLARE_THROW_SCOPE(vm);

-    return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(state, scope, &quot;WebAssembly.CompileError&quot;));

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    Structure* errorStructure = asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyCompileErrorStructure();

+    return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, nullptr, TypeNothing, false));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><span class="cx"> WebAssemblyCompileErrorConstructor* WebAssemblyCompileErrorConstructor::create(VM&amp; vm, Structure* structure, WebAssemblyCompileErrorPrototype* thisPrototype)

</span></span></pre></div>

<a id="trunkSourceJavaScriptCorewasmjsWebAssemblyLinkErrorConstructorcpp"></a>

<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/wasm/js/WebAssemblyLinkErrorConstructor.cpp (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/Source/JavaScriptCore/wasm/js/WebAssemblyLinkErrorConstructor.cpp        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/Source/JavaScriptCore/wasm/js/WebAssemblyLinkErrorConstructor.cpp        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -1,5 +1,5 @@

</span><span class="cx"> /*

</span><del>- * Copyright (C) 2016 Apple Inc. All rights reserved.

</del><ins>+ * Copyright (C) 2016-2017 Apple Inc. All rights reserved.

</ins><span class="cx">  *

</span><span class="cx">  * Redistribution and use in source and binary forms, with or without

</span><span class="cx">  * modification, are permitted provided that the following conditions

</span><span class="lines">@@ -44,21 +44,21 @@

</span><span class="cx">  @end

</span><span class="cx">  */

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyLinkError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyLinkError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    auto&amp; vm = state-&gt;vm();

</del><ins>+    auto&amp; vm = exec-&gt;vm();

</ins><span class="cx">     auto scope = DECLARE_THROW_SCOPE(vm);

</span><del>-    JSValue message = state-&gt;argument(0);

-    auto* structure = InternalFunction::createSubclassStructure(state, state-&gt;newTarget(), asInternalFunction(state-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyLinkErrorStructure());

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    auto* structure = InternalFunction::createSubclassStructure(exec, exec-&gt;newTarget(), asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyLinkErrorStructure());

</ins><span class="cx">     RETURN_IF_EXCEPTION(scope, encodedJSValue());

</span><del>-    return JSValue::encode(JSWebAssemblyLinkError::create(state, vm, structure, message));

</del><ins>+    return JSValue::encode(JSWebAssemblyLinkError::create(exec, vm, structure, message));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyLinkError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyLinkError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    VM&amp; vm = state-&gt;vm();

-    auto scope = DECLARE_THROW_SCOPE(vm);

-    return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(state, scope, &quot;WebAssembly.LinkError&quot;));

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    Structure* errorStructure = asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyLinkErrorStructure();

+    return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, nullptr, TypeNothing, false));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><span class="cx"> WebAssemblyLinkErrorConstructor* WebAssemblyLinkErrorConstructor::create(VM&amp; vm, Structure* structure, WebAssemblyLinkErrorPrototype* thisPrototype)

</span></span></pre></div>

<a id="trunkSourceJavaScriptCorewasmjsWebAssemblyRuntimeErrorConstructorcpp"></a>

<div class="modfile"><h4>Modified: trunk/Source/JavaScriptCore/wasm/js/WebAssemblyRuntimeErrorConstructor.cpp (214258 => 214259)</h4>

<pre class="diff"><span>

<span class="info">--- trunk/Source/JavaScriptCore/wasm/js/WebAssemblyRuntimeErrorConstructor.cpp        2017-03-22 17:51:10 UTC (rev 214258)

+++ trunk/Source/JavaScriptCore/wasm/js/WebAssemblyRuntimeErrorConstructor.cpp        2017-03-22 17:52:55 UTC (rev 214259)

</span><span class="lines">@@ -1,5 +1,5 @@

</span><span class="cx"> /*

</del><ins>+ * Copyright (C) 2016-2017 Apple Inc. All rights reserved.

</ins><span class="cx">  *

</span><span class="cx">  * Redistribution and use in source and binary forms, with or without

</span><span class="cx">  * modification, are permitted provided that the following conditions

</span><span class="lines">@@ -44,21 +44,21 @@

</span><span class="cx">  @end

</span><span class="cx">  */

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyRuntimeError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL constructJSWebAssemblyRuntimeError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    auto&amp; vm = state-&gt;vm();

</del><ins>+    auto&amp; vm = exec-&gt;vm();

</ins><span class="cx">     auto scope = DECLARE_THROW_SCOPE(vm);

</span><del>-    JSValue message = state-&gt;argument(0);

-    auto* structure = InternalFunction::createSubclassStructure(state, state-&gt;newTarget(), asInternalFunction(state-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyRuntimeErrorStructure());

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    auto* structure = InternalFunction::createSubclassStructure(exec, exec-&gt;newTarget(), asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyRuntimeErrorStructure());

</ins><span class="cx">     RETURN_IF_EXCEPTION(scope, encodedJSValue());

</span><del>-    return JSValue::encode(JSWebAssemblyRuntimeError::create(state, vm, structure, message));

</del><ins>+    return JSValue::encode(JSWebAssemblyRuntimeError::create(exec, vm, structure, message));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><del>-static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyRuntimeError(ExecState* state)

</del><ins>+static EncodedJSValue JSC_HOST_CALL callJSWebAssemblyRuntimeError(ExecState* exec)

</ins><span class="cx"> {

</span><del>-    VM&amp; vm = state-&gt;vm();

-    auto scope = DECLARE_THROW_SCOPE(vm);

-    return JSValue::encode(throwConstructorCannotBeCalledAsFunctionTypeError(state, scope, &quot;WebAssembly.RuntimeError&quot;));

</del><ins>+    JSValue message = exec-&gt;argument(0);

+    Structure* errorStructure = asInternalFunction(exec-&gt;jsCallee())-&gt;globalObject()-&gt;WebAssemblyRuntimeErrorStructure();

+    return JSValue::encode(ErrorInstance::create(exec, errorStructure, message, nullptr, TypeNothing, false));

</ins><span class="cx"> }

</span><span class="cx"> 

</span><span class="cx"> WebAssemblyRuntimeErrorConstructor* WebAssemblyRuntimeErrorConstructor::create(VM&amp; vm, Structure* structure, WebAssemblyRuntimeErrorPrototype* thisPrototype)

</span></span></pre>

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