On Tue, 5 Mar 2019, Finn Thain wrote: > > Looks bogus to me. > > If you change memcpy to __builtin_memcpy, then we avoid the macro and the > warning changes to, > > ./include/linux/string.h:456:3: warning: '__builtin_memcpy' forming offset > [7, 8] is out of the bounds [0, 6] [-Warray-bounds] > __builtin_memcpy(dest, src, dest_len); > > The compiler has nothing to complain about here. dest is known to be > id->fr and dest_len is known to be sizeof(id->fr). > > The error message indicates that gcc has applied the bounds [0, 6] to dest > when in fact those are the bounds for src. >
My mistake. GCC is right, it seems memcpy will read past the end of "5.0.0+". --
