tree 35a268ac00847c20d5f109a10f75a44703dfe695
parent 15ade069b10f7f5291e48c01db2da4852dae04b7
author Peter Collingbourne <pcc@google.com> 1614979901 -0800
committer Peter Collingbourne <pcc@google.com> 1614983357 -0800

Add some slack at the end of large allocations when target SDK level < S.

This works around buggy applications that read a few bytes past the
end of their allocation, which would otherwise cause a segfault with
the concurrent Scudo change that aligns large allocations to the right.

Because the implementation of
android_set_application_target_sdk_version() lives in the linker,
we need to introduce a hook so that libc is notified when the target
SDK version changes.

Bug: 181344545
Change-Id: Id4be6645b94fad3f64ae48afd16c0154f1de448f