https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92867
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |msebor at gcc dot gnu.org --- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> --- The "returns-argument" attribute should also be used to help detect buffer overflow after returning from functions declared with it (either built-ins or user-defined): __attribute__ ((returns_arg (1))) char* f (char*); char a[4], b[8]; void g (void) { memcpy (b, f (a), sizeof b); // reads 8 bytes from a }