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libbinder: keep ashmem size >= 0
authorTri Vo <trong@google.com>
Tue, 29 Jan 2019 21:23:46 +0000 (13:23 -0800)
committerTri Vo <trong@google.com>
Wed, 30 Jan 2019 04:11:35 +0000 (20:11 -0800)
commitaa6e1118cc39f64361aac614f58105557e7f3299
treeab1180629ae9a0fcb47d003db7ff24e98dc6ef14
parentf9a1f695d30c3cc96dc6c890407a0db34411521e
libbinder: keep ashmem size >= 0

Avoid integer overflow.

Bug: 123590642
Test: device boots
Change-Id: I9f25827842da00c4e69efca849c6a94721964007
libs/binder/Parcel.cpp