Bug 150716 – [GTK] WebProcess from WebKitGtk+ 2.10.0 compiled in Debug mode hits ASSERT on paintIntoLayer

• Status: NEW
• Component: WebKitGTK

[Andres Gomez Garcia]

Created attachment 264390 [details]
BT from gdb

I'm using WebKitGtk+ with my own JHBuild setting:
https://github.com/tanty/jhbuild-epiphany/tree/wkgtk-devel

MiniBrowser from WebKit 2.10.0

The compilation was done with CMake args:

"-DPORT=GTK -DCMAKE_BUILD_TYPE=Debug -DDEVELOPER_MODE=ON -DCMAKE_C_FLAGS_DEBUG=-g1 -DCMAKE_CXX_FLAGS_DEBUG=-g1"

When visiting several pages, eventually, WebKitWebProcess crashes.

This bug is not reproducible in a predictable way.

[Carlos Garcia Campos]

This is hitting this assert:

if ((paintsIntoWindow() || paintsIntoCompositedAncestor()) && paintingPhase != GraphicsLayerPaintChildClippingMask) {
#if !PLATFORM(IOS)
    // FIXME: Looks like the CALayer tree is out of sync with the GraphicsLayer heirarchy
    // when pages are restored from the PageCache.
    // <rdar://problem/8712587> ASSERT: When Going Back to Page with Plugins in PageCache
    ASSERT_NOT_REACHED();
#endif
    return;
}

But I haven't been able to reproduce it with current trunk