Merge "Test stack buffer size calculation." into main am: a7da00f4

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3342429



Change-Id: Ib1211301c68528998ca9f481204977ecaf3b3caf
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>