Local Hint Resolve valid_block_inject_1 valid_block_inject_2: mem.

Theorem valid_access_inject:
forall f m1 m2 chunk b1 ofs b2 delta p,
f b1 = Some(b2, delta) ->
inject f m1 m2 ->
valid_access m1 chunk b1 ofs p ->
valid_access m2 chunk b2 (ofs + delta) p.