This document defines the coverage for the pthread_attr_setstackaddr function:

Assertion	Tested?
1		YES
2		YES (The test uses a Non-POSIX-Compliant API
                     pthread_getattr_np to get attr in a created thread)
3		YES
4		won't test

Note: pthread_attr_setstackaddr is marked with __attribute_deprecated__
      in glibc implementation, it will got compile warning.
