commit d1ef9e03e5517b4f7658581d8e5216bdf341c2b7
author Guillaume Chelfi <chelfi@google.com> Tue Feb 14 18:44:37 2023 +0000
committer Copybara-Service <copybara-worker@google.com> Tue Feb 14 11:05:53 2023 -0800
tree 267752a6c4105e6a3d479eae0b76b45718fe5478
parent 74edf5867c5b72b1134f3edc591ba0556e42ed45

[scudo] Call __scudo_deallocate_hook on reallocations.

Scudo is expected to call __scudo_allocate_hook on allocations, and
__scudo_deallocate_hook on deallocations, but it's behavior is not
clear on reallocations. Currently, non-trivial reallocations call
__scudo_allocate_hook but never __scudo_deallocate_hook. We should
prefer either calling both, none, or a dedicated
hook (__scudo_reallocate_hook, for instance).

This patch implements the former, and adds a unit test to enforce
those expectations.

Reviewed By: Chia-hungDuan

Differential Revision: https://reviews.llvm.org/D141407

GitOrigin-RevId: 4e3dac6f0a4c419ee0cd575407e95f3833a01a2e