Steps to reproduce: 1. Open the iOS Simulator 2. Open Safari and navigate to apple.com 3. Tap the shopping bag icon in the top right of the screen 4. Tap on Bag At this point this assertion is hit with a debug build: PseudoClassType pseudoClassType() const { ASSERT(match() == PseudoClass); return static_cast<PseudoClassType>(m_pseudoType); }
<rdar://problem/73040905>