RE: pg_ctl start may return 0 even if the postmaster has been already started on Windows

Dear Horiguchi-san,

> I added the thread to next CF entry, so let's see the how cfbot says.

At least there are several compiler warnings. E.g.,

* pgwin32_find_postmaster_pid() has "return;", but IIUC it should be "exit(1)"
* When DWORD is printed, "%lx" should be used.
* The variable "flags" seems not needed.

Here is a patch which suppresses warnings, whereas test would fail...
You can use it if acceptable.

Best Regards,
Hayato Kuroda
FUJITSU LIMITED