I remember spending quality time with coredumps and gdb back in 2012/2013, when a prototype supercar dashboard we were building crashed on certain CSS animations.[ß]
The call chain went through GTKWebkit, Wayland and all the way to Pango and Cairo. Getting that part untangled took a long afternoon. Figuring out the root cause was another two full days.
The topmost parts of the stack above could be dealt with breakpoints, but even with pango/cairo libs from a debug build it was painful. The failing function could only be single-stepped, trying to place breakpoints inside it would not work. In the end it was an unhandled divide-by-zero deep inside the rendering library.
The call chain went through GTKWebkit, Wayland and all the way to Pango and Cairo. Getting that part untangled took a long afternoon. Figuring out the root cause was another two full days.
The topmost parts of the stack above could be dealt with breakpoints, but even with pango/cairo libs from a debug build it was painful. The failing function could only be single-stepped, trying to place breakpoints inside it would not work. In the end it was an unhandled divide-by-zero deep inside the rendering library.
ß: story for another time.