On Sat, 22 Dec 2018 23:24:11 +0900 Namhyung Kim <namhy...@kernel.org> wrote:
> > No, because we don't know the length of str. > > > > > > [ str = "h\0[bad memory]" ] > > > > > > str_has_prefix(str, "TEST THIS BIG STRING AT FRONT") > > > > > > If we use memcmp(), then we are testing way after str has ended, and > > that can cause a memory fault. > > I don't know what's the bad memory causing memory fault but anyway > memcpy() should stop at the NUL character first as it's different, no? No, that's the difference between memcpy() and strncpy(), memcpy() doesn't care about nul characters. It's copying memory not strings. -- Steve
