On Sat, Oct 06, 2018 at 11:51:33AM +0800, Xi Ruoyao wrote: > > Simply crashing leaves you without any clue. You have no idea where to look > > for the bug. The crash could even be by a power outage. That's not exactly > > improving the situation. > > You have GDB. I'd happily do this. But unfortunately, this is an embedded system, and it doesn't have a debug interface. So gdb won't help very much here. > > Issuing a diagnostic "Oops, NULL-dereference at adsf.c:123" would improve > > the situation: you know where to look for the fix. > > You have -fsanitize=undefined. Ah! This seems to be exactly what I was looking for! Unfortunatly, the linker complains that it can't find -lubsan. Do I need to do something special to enable the build/install of the sanitizer runtime library on an embedded target? AFAICS, the sanitizer should be built by default? -- Josef Wolf jw@xxxxxxxxxxxxx
