<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>[213905] branches/safari-603-branch/Source</title>
</head>
<body>
<style type="text/css"><!--
#msg dl.meta { border: 1px #006 solid; background: #369; padding: 6px; color: #fff; }
#msg dl.meta dt { float: left; width: 6em; font-weight: bold; }
#msg dt:after { content:':';}
#msg dl, #msg dt, #msg ul, #msg li, #header, #footer, #logmsg { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; }
#msg dl a { font-weight: bold}
#msg dl a:link { color:#fc3; }
#msg dl a:active { color:#ff0; }
#msg dl a:visited { color:#cc6; }
h3 { font-family: verdana,arial,helvetica,sans-serif; font-size: 10pt; font-weight: bold; }
#msg pre { overflow: auto; background: #ffc; border: 1px #fa0 solid; padding: 6px; }
#logmsg { background: #ffc; border: 1px #fa0 solid; padding: 1em 1em 0 1em; }
#logmsg p, #logmsg pre, #logmsg blockquote { margin: 0 0 1em 0; }
#logmsg p, #logmsg li, #logmsg dt, #logmsg dd { line-height: 14pt; }
#logmsg h1, #logmsg h2, #logmsg h3, #logmsg h4, #logmsg h5, #logmsg h6 { margin: .5em 0; }
#logmsg h1:first-child, #logmsg h2:first-child, #logmsg h3:first-child, #logmsg h4:first-child, #logmsg h5:first-child, #logmsg h6:first-child { margin-top: 0; }
#logmsg ul, #logmsg ol { padding: 0; list-style-position: inside; margin: 0 0 0 1em; }
#logmsg ul { text-indent: -1em; padding-left: 1em; }#logmsg ol { text-indent: -1.5em; padding-left: 1.5em; }
#logmsg > ul, #logmsg > ol { margin: 0 0 1em 0; }
#logmsg pre { background: #eee; padding: 1em; }
#logmsg blockquote { border: 1px solid #fa0; border-left-width: 10px; padding: 1em 1em 0 1em; background: white;}
#logmsg dl { margin: 0; }
#logmsg dt { font-weight: bold; }
#logmsg dd { margin: 0; padding: 0 0 0.5em 0; }
#logmsg dd:before { content:'\00bb';}
#logmsg table { border-spacing: 0px; border-collapse: collapse; border-top: 4px solid #fa0; border-bottom: 1px solid #fa0; background: #fff; }
#logmsg table th { text-align: left; font-weight: normal; padding: 0.2em 0.5em; border-top: 1px dotted #fa0; }
#logmsg table td { text-align: right; border-top: 1px dotted #fa0; padding: 0.2em 0.5em; }
#logmsg table thead th { text-align: center; border-bottom: 1px solid #fa0; }
#logmsg table th.Corner { text-align: left; }
#logmsg hr { border: none 0; border-top: 2px dashed #fa0; height: 1px; }
#header, #footer { color: #fff; background: #636; border: 1px #300 solid; padding: 6px; }
#patch { width: 100%; }
#patch h4 {font-family: verdana,arial,helvetica,sans-serif;font-size:10pt;padding:8px;background:#369;color:#fff;margin:0;}
#patch .propset h4, #patch .binary h4 {margin:0;}
#patch pre {padding:0;line-height:1.2em;margin:0;}
#patch .diff {width:100%;background:#eee;padding: 0 0 10px 0;overflow:auto;}
#patch .propset .diff, #patch .binary .diff {padding:10px 0;}
#patch span {display:block;padding:0 10px;}
#patch .modfile, #patch .addfile, #patch .delfile, #patch .propset, #patch .binary, #patch .copfile {border:1px solid #ccc;margin:10px 0;}
#patch ins {background:#dfd;text-decoration:none;display:block;padding:0 10px;}
#patch del {background:#fdd;text-decoration:none;display:block;padding:0 10px;}
#patch .lines, .info {color:#888;background:#fff;}
--></style>
<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/213905">213905</a></dd>
<dt>Author</dt> <dd>matthew_hanson@apple.com</dd>
<dt>Date</dt> <dd>2017-03-14 10:13:22 -0700 (Tue, 14 Mar 2017)</dd>
</dl>
<h3>Log Message</h3>
<pre>Merge <a href="http://trac.webkit.org/projects/webkit/changeset/212692">r212692</a>. rdar://problem/30635854</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari603branchSourceJavaScriptCoreChangeLog">branches/safari-603-branch/Source/JavaScriptCore/ChangeLog</a></li>
<li><a href="#branchessafari603branchSourceWTFChangeLog">branches/safari-603-branch/Source/WTF/ChangeLog</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari603branchSourceJavaScriptCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/JavaScriptCore/ChangeLog (213904 => 213905)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/JavaScriptCore/ChangeLog 2017-03-14 17:02:15 UTC (rev 213904)
+++ branches/safari-603-branch/Source/JavaScriptCore/ChangeLog 2017-03-14 17:13:22 UTC (rev 213905)
</span><span class="lines">@@ -1,3 +1,58 @@
</span><ins>+2017-02-21 Matthew Hanson <matthew_hanson@apple.com>
+
+ Merge r212692. rdar://problem/30635854
+
+ 2017-02-20 Mark Lam <mark.lam@apple.com>
+
+ [Re-landing] CachedCall should let GC know to keep its arguments alive.
+ https://bugs.webkit.org/show_bug.cgi?id=168567
+ <rdar://problem/30475767>
+
+ Reviewed by Saam Barati.
+
+ We fix this by having CachedCall use a MarkedArgumentBuffer to store its
+ arguments instead of a Vector.
+
+ Also declared CachedCall, MarkedArgumentBuffer, and ProtoCallFrame as
+ WTF_FORBID_HEAP_ALLOCATION because they rely on being stack allocated for
+ correctness.
+
+ Update: the original patch has a bug in MarkedArgumentBuffer::expandCapacity()
+ where it was copying and calling addMarkSet() on values in m_buffer beyond m_size
+ (up to m_capacity). As a result, depending on the pre-existing values in
+ m_inlineBuffer, this may result in a computed Heap pointer that is wrong, and
+ subsequently, manifest as a crash. This is likely to be the cause of the PLT
+ regression.
+
+ I don't have a new test for this fix because the issue relies on sufficiently bad
+ values randomly showing up in m_inlineBuffer when we do an ensureCapacity() which
+ calls expandCapacity().
+
+ * interpreter/CachedCall.h:
+ (JSC::CachedCall::CachedCall):
+ (JSC::CachedCall::call):
+ (JSC::CachedCall::clearArguments):
+ (JSC::CachedCall::appendArgument):
+ (JSC::CachedCall::setArgument): Deleted.
+ * interpreter/CallFrame.h:
+ (JSC::ExecState::emptyList):
+ * interpreter/Interpreter.cpp:
+ (JSC::Interpreter::prepareForRepeatCall):
+ * interpreter/Interpreter.h:
+ * interpreter/ProtoCallFrame.h:
+ * runtime/ArgList.cpp:
+ (JSC::MarkedArgumentBuffer::slowEnsureCapacity):
+ (JSC::MarkedArgumentBuffer::expandCapacity):
+ (JSC::MarkedArgumentBuffer::slowAppend):
+ * runtime/ArgList.h:
+ (JSC::MarkedArgumentBuffer::append):
+ (JSC::MarkedArgumentBuffer::ensureCapacity):
+ * runtime/StringPrototype.cpp:
+ (JSC::replaceUsingRegExpSearch):
+ * runtime/VM.cpp:
+ (JSC::VM::VM):
+ * runtime/VM.h:
+
</ins><span class="cx"> 2017-02-23 Filip Pizlo <fpizlo@apple.com>
</span><span class="cx">
</span><span class="cx"> Disable concurrent GC A:B testing.
</span></span></pre></div>
<a id="branchessafari603branchSourceWTFChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-603-branch/Source/WTF/ChangeLog (213904 => 213905)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-603-branch/Source/WTF/ChangeLog 2017-03-14 17:02:15 UTC (rev 213904)
+++ branches/safari-603-branch/Source/WTF/ChangeLog 2017-03-14 17:13:22 UTC (rev 213905)
</span><span class="lines">@@ -1,3 +1,26 @@
</span><ins>+2017-02-21 Matthew Hanson <matthew_hanson@apple.com>
+
+ Merge r212692. rdar://problem/30635854
+
+ 2017-02-20 Mark Lam <mark.lam@apple.com>
+
+ [Re-landing] CachedCall should let GC know to keep its arguments alive.
+ https://bugs.webkit.org/show_bug.cgi?id=168567
+ <rdar://problem/30475767>
+
+ Reviewed by Saam Barati.
+
+ Added a WTF_FORBID_HEAP_ALLOCATION that will cause a compilation failure if
+ a class declared with it is malloced.
+
+ While this doesn't prevent that class declared WTF_FORBID_HEAP_ALLOCATION from
+ being embedded in another class that is heap allocated, it does at minimum
+ document the intent and gives the users of this class a chance to do the
+ right thing.
+
+ * WTF.xcodeproj/project.pbxproj:
+ * wtf/ForbidHeapAllocation.h: Added.
+
</ins><span class="cx"> 2017-02-17 JF Bastien <jfbastien@apple.com>
</span><span class="cx">
</span><span class="cx"> A/B test concurrent GC
</span></span></pre>
</div>
</div>
</body>
</html>