There are three printing tests that have been constantly crashing for a long time. This crash was hiding because the tests were marked as flaky. The tests are: editing/execCommand/print.html fast/media/print-restores-previous-mediatype.html printing/print-close-crash.html Results dashboard: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=editing%2FexecCommand%2Fprint.html&test=fast%2Fmedia%2Fprint-restores-previous-mediatype.html&test=printing%2Fprint-close-crash.html&platform=GTK&platform=WPE All tests share the same stacktrace. There's a debug stacktrace for fast/media/print-restores-previous-mediatype.html which I past below: Program terminated with signal SIGTRAP, Trace/breakpoint trap. #0 g_logv (log_domain=0x7f908a03414c "Gtk", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=<optimized out>) at ../glib/gmessages.c:1413 1413 g_private_set (&g_log_depth, GUINT_TO_POINTER (depth)); [Current thread is 1 (Thread 0x7f9086c68200 (LWP 891))] Thread 1 (Thread 0x7f9086c68200 (LWP 891)): #0 g_logv (log_domain=0x7f908a03414c "Gtk", log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>, args=<optimized out>) at ../glib/gmessages.c:1413 #1 0x00007f909d3f8973 in g_log (log_domain=<optimized out>, log_level=<optimized out>, format=<optimized out>) at ../glib/gmessages.c:1451 #2 0x00007f909139406c in IPC::encode(IPC::Encoder&, _GtkPrintSettings*) (encoder=..., printSettings=0x0) at ../../Source/WebKit/Shared/gtk/ArgumentCodersGtk.cpp:204 #3 0x00007f90912b678c in WebKit::PrintInfo::encode(IPC::Encoder&) const (this=0x7ffdc58fd470, encoder=...) at ../../Source/WebKit/Shared/PrintInfo.cpp:45 #4 0x00007f90915259d6 in IPC::ArgumentCoder<WebKit::PrintInfo, void>::encode<IPC::Encoder>(IPC::Encoder&, WebKit::PrintInfo const&) (encoder=..., t=...) at ../../Source/WebKit/Platform/IPC/ArgumentCoder.h:49 #5 0x00007f909151ffee in IPC::Encoder::operator<< <WebKit::PrintInfo const&>(WebKit::PrintInfo const&) (this=0x7f9070332900, t=...) at ../../Source/WebKit/Platform/IPC/Encoder.h:68 #6 0x00007f9091515e8e in IPC::TupleEncoder<1ul, WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&>::encode<IPC::Encoder>(IPC::Encoder&, std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&> const&) (encoder=..., tuple=std::tuple containing = {...}) at ../../Source/WebKit/Platform/IPC/ArgumentCoders.h:276 #7 0x00007f909150b5ec in IPC::TupleEncoder<2ul, WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&>::encode<IPC::Encoder>(IPC::Encoder&, std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&> const&) (encoder=..., tuple=std::tuple containing = {...}) at ../../Source/WebKit/Platform/IPC/ArgumentCoders.h:277 #8 0x00007f909150119f in IPC::ArgumentCoder<std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&>, void>::encode<IPC::Encoder>(IPC::Encoder&, std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&> const&) (encoder=..., tuple=std::tuple containing = {...}) at ../../Source/WebKit/Platform/IPC/ArgumentCoders.h:350 #9 0x00007f90914f5514 in IPC::Encoder::operator<< <std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&> const&>(std::tuple<WTF::ObjectIdentifier<WebCore::FrameIdentifierType> const&, WebKit::PrintInfo const&> const&) (this=0x7f9070332900, t=std::tuple containing = {...}) at ../../Source/WebKit/Platform/IPC/Encoder.h:68 #10 0x00007f90914e4a21 in IPC::MessageSender::send<Messages::WebPage::BeginPrinting>(Messages::WebPage::BeginPrinting const&, unsigned long, WTF::OptionSet<IPC::SendOption>) (this=0x7f90789fc040, message=..., destinationID=201, sendOptions=...) at ../../Source/WebKit/Platform/IPC/MessageSender.h:48 ...
*** This bug has been marked as a duplicate of bug 196542 ***