tree 65d7fd8a5b9f0183014df71e386c5b2aa2e4a6fb
parent 875fd55938fe993973948bfb59b9c3814c338ef4
author Sim Sun <simsun@fb.com> 1646288127 -0800
committer Christopher Ferris <cferris@google.com> 1646332856 -0800

Allow unwinding main thread in ThreadUnwinder.

The check in ThreadUnwinder was overly aggressive, it should only
disallow unwinding itself. Unfortunately, it only disallowed
unwinding the main thread.

Add new unit tests to verify this behavior.

Test: New unit tests pass that verify thread unwinding behavior.

Signed-off-by: Sim Sun <simsun@fb.com>
Change-Id: If75399911f2f98f3155592fc292341d7b9e5e023