I am confused about the configure rename managing hardlinks test.

[John E. Malmberg]

Hello,

I am confused about the rename managing hardlinks test.

It starts out with conftest.f as an empty file and conftest.fl as a hard 
link to conftest.f.

Step 1:
    rename ("conftest.f", "conftest.f1")

I would expect after a success, conftest.f would no longer exist, only 
conftest.f1.

Step 2:
    unlink ("conftest.f1")

Now I would expect confest.f1 to not exist after this.

Step 3 is what confuses me.

   rename("conftest.f", "conftest.f") which is expected to work.

How can this succeed if "conftest.f" was removed in step 1?

Regards,
-John