From: Martin Sebor > Sent: 22 March 2021 22:08 ... > In GCC 11, all access warnings expect objects to be either declared > or allocated. Pointers with constant values are taken to point to > nothing valid (as Arnd mentioned above, this is to detect invalid > accesses to members of structs at address zero). > > One possible solution to the known address problem is to extend GCC > attributes address and io that pin an object to a hardwired address > to all targets (at the moment they're supported on just one or two > targets). I'm not sure this can still happen before GCC 11 releases > sometime in April or May. A different solution is to define a normal C external data item and then assign a fixed address with an asm statement or in the linker script. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
