tree 453ed154af17c6a52f33c86f4835c02cbc8bc437
parent 26d25a22e27fff4c23669d0dd66e3a09d869857d
author George Burgess IV <gbiv@google.com> 1559868840 -0700
committer George Burgess IV <gbiv@google.com> 1560493562 -0700

fortify: fix overflow checks in unistd

We should only be calling _real versions of the functions that use this
if the input size is verifiably <= SSIZE_MAX. Otherwise, just fall
through to _chk and let that handle it.

Bug: 131861088
Test: mma && bionic-unit-tests
Change-Id: Iba04e486ef91ea1b3539ab6df6260429264e66b4