I wasted almost 2 weeks to figure out what the heck “Previous frame inner to this frame (gdb could not unwind past this frame)” means.
I stil don’t know what it really means, but found out when it happens as far as WebView is concerned.
Don’t set any breakpoint here.
( I guess “frame” means “stack”. )
So, to debug codes like the one above, using NSLog() is better.