Created attachment 265150 [details] Test Load the attached test with debug MiniBrowser: <style> * { display: table-caption; position: relative; column-count: +98048; } textarea { position: absolute; } canvas { column-span: all; } </style> <textarea></textarea> <span> <canvas></canvas> </span> OS: Ubuntu 15.04 x86_64 Checked build: debug EFL Checked version: 009fb33 Backtrace: ASSERTION FAILED: !fullRemoveInsert || !is<RenderBlock>(*this) || !downcast<RenderBlock>(*this).hasPositionedObjects() ../../Source/WebCore/rendering/RenderBoxModelObject.cpp(2514) : void WebCore::RenderBoxModelObject::moveChildTo(WebCore::RenderBoxModelObject*, WebCore::RenderObject*, WebCore::RenderObject*, bool) 1 0x7fc8f4a17f97 WTFCrash 2 0x7fc8fb3a1fc3 WebCore::RenderBoxModelObject::moveChildTo(WebCore::RenderBoxModelObject*, WebCore::RenderObject*, WebCore::RenderObject*, bool) 3 0x7fc8fb489be7 WebCore::RenderMultiColumnFlowThread::flowThreadDescendantInserted(WebCore::RenderObject*) 4 0x7fc8fb4ac211 WebCore::RenderObject::insertedIntoTree() 5 0x7fc8fb3b6733 WebCore::RenderElement::insertedIntoTree() 6 0x7fc8fb3b4b3f WebCore::RenderElement::insertChildInternal(WebCore::RenderObject*, WebCore::RenderObject*, WebCore::RenderElement::NotifyChildrenType) 7 0x7fc8fb3b46c2 WebCore::RenderElement::addChild(WebCore::RenderObject*, WebCore::RenderObject*) 8 0x7fc8fb3065da WebCore::RenderBlock::addChildIgnoringContinuation(WebCore::RenderObject*, WebCore::RenderObject*) 9 0x7fc8fb3060b0 WebCore::RenderBlock::addChild(WebCore::RenderObject*, WebCore::RenderObject*) 10 0x7fc8fb3460f3 WebCore::RenderBlockFlow::addChild(WebCore::RenderObject*, WebCore::RenderObject*) 11 0x7fc8fb3a20a8 WebCore::RenderBoxModelObject::moveChildTo(WebCore::RenderBoxModelObject*, WebCore::RenderObject*, WebCore::RenderObject*, bool) 12 0x7fc8fb3a2297 WebCore::RenderBoxModelObject::moveChildrenTo(WebCore::RenderBoxModelObject*, WebCore::RenderObject*, WebCore::RenderObject*, WebCore::RenderObject*, bool) 13 0x7fc8fb31988d WebCore::RenderBoxModelObject::moveChildrenTo(WebCore::RenderBoxModelObject*, WebCore::RenderObject*, WebCore::RenderObject*, bool) 14 0x7fc8fb488ed1 WebCore::RenderMultiColumnFlowThread::populate() 15 0x7fc8fb3339c1 WebCore::RenderBlockFlow::createMultiColumnFlowThread() 16 0x7fc8fb34653a WebCore::RenderBlockFlow::setComputedColumnCountAndWidth(int, WebCore::LayoutUnit) 17 0x7fc8fb3355d4 WebCore::RenderBlockFlow::computeColumnCountAndWidth() 18 0x7fc8fb335085 WebCore::RenderBlockFlow::recomputeLogicalWidthAndColumnWidth() 19 0x7fc8fb3356c7 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) 20 0x7fc8fb30810e WebCore::RenderBlock::layout() 21 0x7fc8fb2db5d9 WebCore::RenderElement::layoutIfNeeded() 22 0x7fc8fb4ca6a8 WebCore::RenderTable::layoutCaption(WebCore::RenderTableCaption*) 23 0x7fc8fb4cafc0 WebCore::RenderTable::layout() 24 0x7fc8fb336a34 WebCore::RenderBlockFlow::layoutBlockChild(WebCore::RenderBox&, WebCore::RenderBlockFlow::MarginInfo&, WebCore::LayoutUnit&, WebCore::LayoutUnit&) 25 0x7fc8fb336573 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) 26 0x7fc8fb3359d7 WebCore::RenderBlockFlow::layoutBlock(bool, WebCore::LayoutUnit) 27 0x7fc8fb30810e WebCore::RenderBlock::layout() 28 0x7fc8fb3d5c45 WebCore::RenderFlowThread::layout() 29 0x7fc8fb488d52 WebCore::RenderMultiColumnFlowThread::layout() 30 0x7fc8fb346016 WebCore::RenderBlockFlow::layoutSpecialExcludedChild(bool) 31 0x7fc8fb336439 WebCore::RenderBlockFlow::layoutBlockChildren(bool, WebCore::LayoutUnit&) Aborted (core dumped) Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fc8f4a17f9c in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321 321 *(int *)(uintptr_t)0xbbadbeef = 0; #0 0x00007fc8f4a17f9c in WTFCrash () at ../../Source/WTF/wtf/Assertions.cpp:321 #1 0x00007fc8fb3a1fc3 in WebCore::RenderBoxModelObject::moveChildTo (this=0x7fc8d7bb77e8, toBoxModelObject=0x7fc8d7b50958, child=0x7fc8d7b54850, beforeChild=0x0, fullRemoveInsert=true) at ../../Source/WebCore/rendering/RenderBoxModelObject.cpp:2514 #2 0x00007fc8fb489be7 in WebCore::RenderMultiColumnFlowThread::flowThreadDescendantInserted (this=0x7fc8d7a7c470, descendant=0x7fc8d7be1a00) at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:374 #3 0x00007fc8fb4ac211 in WebCore::RenderObject::insertedIntoTree (this=0x7fc8d7abea40) at ../../Source/WebCore/rendering/RenderObject.cpp:1554 #4 0x00007fc8fb3b6733 in WebCore::RenderElement::insertedIntoTree (this=0x7fc8d7abea40) at ../../Source/WebCore/rendering/RenderElement.cpp:1057 #5 0x00007fc8fb3b4b3f in WebCore::RenderElement::insertChildInternal (this=0x7fc8d7a7c470, newChild=0x7fc8d7abea40, beforeChild=0x0, notifyChildren=WebCore::RenderElement::NotifyChildren) at ../../Source/WebCore/rendering/RenderElement.cpp:602 #6 0x00007fc8fb3b46c2 in WebCore::RenderElement::addChild (this=0x7fc8d7a7c470, newChild=0x7fc8d7abea40, beforeChild=0x0) at ../../Source/WebCore/rendering/RenderElement.cpp:526 #7 0x00007fc8fb3065da in WebCore::RenderBlock::addChildIgnoringContinuation (this=0x7fc8d7a7c470, newChild=0x7fc8d7abea40, beforeChild=0x0) at ../../Source/WebCore/rendering/RenderBlock.cpp:492 #8 0x00007fc8fb3060b0 in WebCore::RenderBlock::addChild (this=0x7fc8d7a7c470, newChild=0x7fc8d7abea40, beforeChild=0x0) at ../../Source/WebCore/rendering/RenderBlock.cpp:407 #9 0x00007fc8fb3460f3 in WebCore::RenderBlockFlow::addChild (this=0x7fc8d7a7c470, newChild=0x7fc8d7abea40, beforeChild=0x0) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3796 #10 0x00007fc8fb3a20a8 in WebCore::RenderBoxModelObject::moveChildTo (this=0x7fc8d7b64678, toBoxModelObject=0x7fc8d7a7c470, child=0x7fc8d7abea40, beforeChild=0x0, fullRemoveInsert=true) at ../../Source/WebCore/rendering/RenderBoxModelObject.cpp:2522 #11 0x00007fc8fb3a2297 in WebCore::RenderBoxModelObject::moveChildrenTo (this=0x7fc8d7b64678, toBoxModelObject=0x7fc8d7a7c470, startChild=0x7fc8d7abea40, endChild=0x7fc8d7a7c470, beforeChild=0x0, fullRemoveInsert=true) at ../../Source/WebCore/rendering/RenderBoxModelObject.cpp:2561 #12 0x00007fc8fb31988d in WebCore::RenderBoxModelObject::moveChildrenTo (this=0x7fc8d7b64678, toBoxModelObject=0x7fc8d7a7c470, startChild=0x7fc8d7abea40, endChild=0x7fc8d7a7c470, fullRemoveInsert=true) at ../../Source/WebCore/rendering/RenderBoxModelObject.h:291 #13 0x00007fc8fb488ed1 in WebCore::RenderMultiColumnFlowThread::populate (this=0x7fc8d7a7c470) at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:153 #14 0x00007fc8fb3339c1 in WebCore::RenderBlockFlow::createMultiColumnFlowThread (this=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:128 #15 0x00007fc8fb34653a in WebCore::RenderBlockFlow::setComputedColumnCountAndWidth (this=0x7fc8d7b64678, count=65535, width=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3859 #16 0x00007fc8fb3355d4 in WebCore::RenderBlockFlow::computeColumnCountAndWidth (this=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:426 #17 0x00007fc8fb335085 in WebCore::RenderBlockFlow::recomputeLogicalWidthAndColumnWidth (this=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:386 #18 0x00007fc8fb3356c7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7b64678, relayoutChildren=false, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:438 #19 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #20 0x00007fc8fb2db5d9 in WebCore::RenderElement::layoutIfNeeded (this=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderElement.h:135 #21 0x00007fc8fb4ca6a8 in WebCore::RenderTable::layoutCaption (this=0x7fc8d7abe7b0, caption=0x7fc8d7b64678) at ../../Source/WebCore/rendering/RenderTable.cpp:389 #22 0x00007fc8fb4cafc0 in WebCore::RenderTable::layout (this=0x7fc8d7abe7b0) at ../../Source/WebCore/rendering/RenderTable.cpp:488 #23 0x00007fc8fb336a34 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x7fc8d7a8ab18, child=..., marginInfo=..., previousFloatLogicalBottom=..., maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:709 #24 0x00007fc8fb336573 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fc8d7a8ab18, relayoutChildren=false, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632 #25 0x00007fc8fb3359d7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7a8ab18, relayoutChildren=false, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #26 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7a8ab18) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #27 0x00007fc8fb3d5c45 in WebCore::RenderFlowThread::layout (this=0x7fc8d7a8ab18) at ../../Source/WebCore/rendering/RenderFlowThread.cpp:202 #28 0x00007fc8fb488d52 in WebCore::RenderMultiColumnFlowThread::layout (this=0x7fc8d7a8ab18) at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:126 #29 0x00007fc8fb346016 in WebCore::RenderBlockFlow::layoutSpecialExcludedChild (this=0x7fc8d7bb77e8, relayoutChildren=true) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3771 #30 0x00007fc8fb336439 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fc8d7bb77e8, relayoutChildren=true, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:604 #31 0x00007fc8fb3359d7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7bb77e8, relayoutChildren=true, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #32 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7bb77e8) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #33 0x00007fc8fb2db5d9 in WebCore::RenderElement::layoutIfNeeded (this=0x7fc8d7bb77e8) at ../../Source/WebCore/rendering/RenderElement.h:135 #34 0x00007fc8fb4ca6a8 in WebCore::RenderTable::layoutCaption (this=0x7fc8d7abe000, caption=0x7fc8d7bb77e8) at ../../Source/WebCore/rendering/RenderTable.cpp:389 #35 0x00007fc8fb4cafc0 in WebCore::RenderTable::layout (this=0x7fc8d7abe000) at ../../Source/WebCore/rendering/RenderTable.cpp:488 #36 0x00007fc8fb336a34 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x7fc8d7a8a470, child=..., marginInfo=..., previousFloatLogicalBottom=..., maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:709 #37 0x00007fc8fb336573 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fc8d7a8a470, relayoutChildren=false, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632 #38 0x00007fc8fb3359d7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7a8a470, relayoutChildren=false, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #39 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7a8a470) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #40 0x00007fc8fb3d5c45 in WebCore::RenderFlowThread::layout (this=0x7fc8d7a8a470) at ../../Source/WebCore/rendering/RenderFlowThread.cpp:202 #41 0x00007fc8fb488d52 in WebCore::RenderMultiColumnFlowThread::layout (this=0x7fc8d7a8a470) at ../../Source/WebCore/rendering/RenderMultiColumnFlowThread.cpp:126 #42 0x00007fc8fb346016 in WebCore::RenderBlockFlow::layoutSpecialExcludedChild (this=0x7fc8d7bb75c0, relayoutChildren=true) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:3771 #43 0x00007fc8fb336439 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fc8d7bb75c0, relayoutChildren=true, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:604 #44 0x00007fc8fb3359d7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7bb75c0, relayoutChildren=true, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #45 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7bb75c0) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #46 0x00007fc8fb336a34 in WebCore::RenderBlockFlow::layoutBlockChild (this=0x7fc8d7add228, child=..., marginInfo=..., previousFloatLogicalBottom=..., maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:709 #47 0x00007fc8fb336573 in WebCore::RenderBlockFlow::layoutBlockChildren (this=0x7fc8d7add228, relayoutChildren=true, maxFloatLogicalBottom=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:632 #48 0x00007fc8fb3359d7 in WebCore::RenderBlockFlow::layoutBlock (this=0x7fc8d7add228, relayoutChildren=true, pageLogicalHeight=...) at ../../Source/WebCore/rendering/RenderBlockFlow.cpp:485 #49 0x00007fc8fb30810e in WebCore::RenderBlock::layout (this=0x7fc8d7add228) at ../../Source/WebCore/rendering/RenderBlock.cpp:931 #50 0x00007fc8fb51a7af in WebCore::RenderView::layoutContent (this=0x7fc8d7add228, state=...) at ../../Source/WebCore/rendering/RenderView.cpp:253 #51 0x00007fc8fb51aea2 in WebCore::RenderView::layout (this=0x7fc8d7add228) at ../../Source/WebCore/rendering/RenderView.cpp:378 #52 0x00007fc8fb0ed19b in WebCore::FrameView::layout (this=0x7fc8d7825540, allowSubtree=true) at ../../Source/WebCore/page/FrameView.cpp:1414 #53 0x00007fc8fab4d5b8 in WebCore::Document::implicitClose (this=0x7fc8d7826a40) at ../../Source/WebCore/dom/Document.cpp:2704 #54 0x00007fc8fafb0b1b in WebCore::FrameLoader::checkCallImplicitClose (this=0x7fc8d7ae4098) at ../../Source/WebCore/loader/FrameLoader.cpp:889 #55 0x00007fc8fafb0852 in WebCore::FrameLoader::checkCompleted (this=0x7fc8d7ae4098) at ../../Source/WebCore/loader/FrameLoader.cpp:835 #56 0x00007fc8fafb05c2 in WebCore::FrameLoader::finishedParsing (this=0x7fc8d7ae4098) at ../../Source/WebCore/loader/FrameLoader.cpp:756 #57 0x00007fc8fab575e8 in WebCore::Document::finishedParsing (this=0x7fc8d7826a40) at ../../Source/WebCore/dom/Document.cpp:4897 #58 0x00007fc8fbebe799 in WebCore::HTMLConstructionSite::finishedParsing (this=0x7fc8d7afe6e0) at ../../Source/WebCore/html/parser/HTMLConstructionSite.cpp:403 #59 0x00007fc8faeaa210 in WebCore::HTMLTreeBuilder::finished (this=0x7fc8d7afe6c0) at ../../Source/WebCore/html/parser/HTMLTreeBuilder.cpp:2937 #60 0x00007fc8fae7a8b4 in WebCore::HTMLDocumentParser::end (this=0x7fc8d782e840) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:393 #61 0x00007fc8fae7a98d in WebCore::HTMLDocumentParser::attemptToRunDeferredScriptsAndEnd (this=0x7fc8d782e840) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:402 #62 0x00007fc8fae7966f in WebCore::HTMLDocumentParser::prepareToStopParsing (this=0x7fc8d782e840) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:132 #63 0x00007fc8fae7a9d0 in WebCore::HTMLDocumentParser::attemptToEnd (this=0x7fc8d782e840) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:414 #64 0x00007fc8fae7aa87 in WebCore::HTMLDocumentParser::finish (this=0x7fc8d782e840) at ../../Source/WebCore/html/parser/HTMLDocumentParser.cpp:442 #65 0x00007fc8faf9b9f6 in WebCore::DocumentWriter::end (this=0x7fc8d78249e0) at ../../Source/WebCore/loader/DocumentWriter.cpp:247 #66 0x00007fc8faf852cc in WebCore::DocumentLoader::finishedLoading (this=0x7fc8d7824940, finishTime=0) at ../../Source/WebCore/loader/DocumentLoader.cpp:437 #67 0x00007fc8faf8502a in WebCore::DocumentLoader::notifyFinished (this=0x7fc8d7824940, resource=0x7fc8d7836000) at ../../Source/WebCore/loader/DocumentLoader.cpp:384 #68 0x00007fc8fb030437 in WebCore::CachedResource::checkNotify (this=0x7fc8d7836000) at ../../Source/WebCore/loader/cache/CachedResource.cpp:297 #69 0x00007fc8fb030546 in WebCore::CachedResource::finishLoading (this=0x7fc8d7836000) at ../../Source/WebCore/loader/cache/CachedResource.cpp:313 #70 0x00007fc8fb02c73a in WebCore::CachedRawResource::finishLoading (this=0x7fc8d7836000, data=0x7fc8d7bbb680) at ../../Source/WebCore/loader/cache/CachedRawResource.cpp:103 #71 0x00007fc8faff5168 in WebCore::SubresourceLoader::didFinishLoading (this=0x7fc8d782fa80, finishTime=0) at ../../Source/WebCore/loader/SubresourceLoader.cpp:372 #72 0x00007fc8fafefc47 in WebCore::ResourceLoader::didFinishLoading (this=0x7fc8d782fa80, finishTime=0) at ../../Source/WebCore/loader/ResourceLoader.cpp:638 #73 0x00007fc8fb7e1560 in WebCore::readCallback (asyncResult=0x21aa450, data=0x7fc8d7bbd660) at ../../Source/WebCore/platform/network/soup/ResourceHandleSoup.cpp:1341 #74 0x00007fc8f10075b6 in async_ready_callback_wrapper (source_object=0x20b65b0, res=0x21aa450, user_data=0x7fc8d7bbd660) at ginputstream.c:523 #75 0x00007fc8f102db84 in g_task_return_now (task=0x21aa450) at gtask.c:1077 #76 0x00007fc8f102dba9 in complete_in_idle_cb (task=0x21aa450) at gtask.c:1086 #77 0x00007fc8f0a65add in g_main_dispatch (context=0x20b08d0) at gmain.c:3064 #78 g_main_context_dispatch (context=context@entry=0x20b08d0) at gmain.c:3663 #79 0x00007fc8f23d1e58 in _ecore_glib_select__locked (ecore_timeout=<optimized out>, efds=0x7fff79fb2e80, wfds=0x7fff79fb2e00, rfds=0x7fff79fb2d80, ecore_fds=<optimized out>, ctx=<optimized out>) at lib/ecore/ecore_glib.c:172 #80 _ecore_glib_select (ecore_fds=<optimized out>, rfds=0x7fff79fb2d80, wfds=0x7fff79fb2e00, efds=0x7fff79fb2e80, ecore_timeout=<optimized out>) at lib/ecore/ecore_glib.c:204 #81 0x00007fc8f23d54a4 in _ecore_main_select (timeout=9.532824124368238e-130) at lib/ecore/ecore_main.c:1459 #82 0x00007fc8f23d5ed4 in _ecore_main_loop_iterate_internal (once_only=once_only@entry=0) at lib/ecore/ecore_main.c:1893 #83 0x00007fc8f23d5fc7 in ecore_main_loop_begin () at lib/ecore/ecore_main.c:983 #84 0x00007fc8f4a72e8d in WTF::RunLoop::run () at ../../Source/WTF/wtf/efl/RunLoopEfl.cpp:49 #85 0x00007fc8fa8d2e1b in WebKit::ChildProcessMain<WebKit::WebProcess, WebKit::WebProcessMain> (argc=2, argv=0x7fff79fb32b8) at ../../Source/WebKit2/Shared/unix/ChildProcessMain.h:61 #86 0x00007fc8fa8d2a29 in WebKit::WebProcessMainUnix (argc=2, argv=0x7fff79fb32b8) at ../../Source/WebKit2/WebProcess/efl/WebProcessMainEfl.cpp:161 #87 0x00000000004008ea in main (argc=2, argv=0x7fff79fb32b8) at ../../Source/WebKit2/WebProcess/EntryPoint/unix/WebProcessMain.cpp:44
This reproduces in r204037.
<rdar://problem/28213486>
I can't reproduce this with r209438.