• Russ Cox's avatar
    cmd/gc, runtime: fix race, nacl for writebarrier changes · ff6d0a4d
    Russ Cox authored
    The racewalk code was not updated for the new write barriers.
    Make it more future-proof.
    
    The new write barrier code assumed that +1 pointer would
    be aligned properly for any type that might follow, but that's
    not true on 32-bit systems where some types are 64-bit aligned.
    The only system like that today is nacl/amd64p32.
    Insert a dummy pointer so that the ambiguously typed
    value is at +2 pointers, which is always max-aligned.
    
    LGTM=r
    R=r
    CC=golang-codereviews, iant, khr
    https://golang.org/cl/158890046
    ff6d0a4d
builtin.c 9.49 KB