Merge "Add a test for a recent POSIX change." am: cfb9030ff0 am: 028f3b6058 am: 760102d7a9 am: cc01683ce6

Original change: https://android-review.googlesource.com/c/platform/bionic/+/2638673

Change-Id: I3bcf42aa6dfb365ad04205b998b04caa817ed2d4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>