On Fri, 17 Jan 2025 16:46:58 GMT, Brian Burkhalter <b...@openjdk.org> wrote:
>> test/jdk/java/io/File/createTempFile/SpecialTempFile.java line 95:
>>
>>> 93:
>>> 94: String cmd = "Systeminfo";
>>> 95: Process p = Runtime.getRuntime().exec(new String[] {cmd});
>>
>> I'm not a big fan of running third-party tools in our tests; did you try
>> fixing the regex expression?
>> Replace: `"^.*[11|2025]$"` (character class) -> `"^.*(11|2025)$"`
>> (alternative strings)
>
> No, I replaced it with splitting the OS version string. In any case, would
> that cover, e.g., the hypothetical cases Windows 27, Windows Server 2038,
> etc.?
>
> Unfortunately Miscrosoft does not provide a reliable API to obtain the build
> number. `GetVersionEx` is deprecated.
> [KUSER_SHARED_DATA](https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-kuser_shared_data)
> contains `NtBuildNumber` but some device driver kit has to be installed to
> use it.
>
> Also,
> [IsWindows10OrGreater](https://learn.microsoft.com/en-us/windows/win32/api/versionhelpers/nf-versionhelpers-iswindows10orgreater)
> returned `false` on my Windows 11 machine so it is suspicious, and
> [IsWindowsVersionOrGreater](https://learn.microsoft.com/en-us/windows/win32/api/versionhelpers/nf-versionhelpers-iswindowsversionorgreater)
> would require being able to know the service pack number of a particular
> build which I am not sure is possible,
No, it wouldn't cover any future Windows versions, but it would definitely buy
us a few years.
Regarding a more permanent solution: the test is supposed to verify the fix for
[JDK-8013827](https://bugs.openjdk.org/browse/JDK-8013827). I think it should
accept both outcomes (success and the specific exception); the only
unacceptable outcomes are:
- timeout,
- unexpected exception.
We don't need to know the exact Windows version to verify that the test doesn't
time out.
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/23117#discussion_r1920491885
