[webkit-dev] WebKit debugging on OSX and ~/.lldbinit

[Sylvain Galineau]

I’ve recently found myself in the following situation while debugging 
WebKit: the debugger (Xcode) would hit a breakpoint, I would place a new 
breakpoint in a method up the current call stack, re-run my test and 
then…nothing. The new breakpoint would never be hit though the original 
one still was and I could still see that method on the call stack with my 
breakpoint in it.

For instance, I would set a breakpoint in FontCascade::width(), see 
RenderSVGText::layout() on the call stack then set a breakpoint in the 
latter. I’d try my test again and never break into 
RenderSVGText::layout(). 

I verified I was using a debug build, rebuilt from scratch, tried 
command-line LLDB, stood on my head, no luck.

Until I added:

	settings set target.inline-breakpoint-strategy always


in ~/.lldbinit.

I’m glad it works - yay breakpoints - but am not quite sure why this bit 
of magic is needed. Does anyone else use this/know why it helps?