https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111669
Jeffrey A. Law <law at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #8 from Jeffrey A. Law <law at gcc dot gnu.org> --- The warning is meant to catch cases where the compiler can prove there is a NULL value that flows into either a pointer dereference or into a function argument where that argument has been declared as never allowed to be NULL. In this case we have no semantic information about GetWindowsDirectoryA; it's totally opaque. So the NULL poiner that gets passed in as PATH in the call to GetSystemDirectory16 flows into the __builtin_strcpy and we get a warning per design.