[extraduder_ire]

Linux did break adobe flash when it used memmove like memcopy after fixing a kernel bug. Can't think of any other examples though.

[vbezhenar]

AFAIR it was glibc change and Linux kernel had nothing to do with it.

[thayne]

memmove and memcpy don't use a syscall, that would be very inefficient. How would a kernel fix change the behavior?

[saurik]

Well, everyone breaks Adobe Flash... that's the whispered exception at the end of the rule: "don't break userspace and then blame the user (unless that user is Adobe Flash... F--- Adobe Flash)" ;P.