Exactly. Propagating the information that p was passed as argument to memcpy and thus must be non-null is a new GCC 4.9 optimization (some discussion here: http

Exactly. Propagating the information that p was passed as argument to memcpy and thus must be non-null is a new GCC 4.9 optimization (some discussion here: http://stackoverflow.com/questions/5243012/is-it-guaranteed-to-be-safe-to-perform-memcpy0-0-0 http://stackoverflow.com/questions/5243012/is-it-guaranteed-... ).