[GR-51257] java.io.tmpdir property not respected in java.io.File.createTempFile?

[borkdude]

GraalVM version Oracle GraalVM 21.0.1
On macOS (but happens on linux too)

Repro:

public class Temp {
    public static void main(String[] args) throws java.io.IOException {
        System.out.println("env " + System.getenv("TMPDIR"));
        System.out.println("prop " + System.getProperty("java.io.tmpdir"));
        System.out.println("tmpfile " + java.io.File.createTempFile("clojure-lsp.", ".out"));
    }
}

Compile to native image.

I would expect java.io.File.createTempFile to be affected by either TMPDIRenv var or java.io.tmpdir system property, but it isn't:

$ TMPDIR=foo ./temp
env foo
prop /var/folders/j9/xmjlcym958b1fr0npsp9msvh0000gn/T/
tmpfile /var/folders/j9/xmjlcym958b1fr0npsp9msvh0000gn/T/clojure-lsp.295997061503198015.out

$ TMPDIR=foo ./temp -Djava.io.tmpdir=foo
env foo
prop foo
tmpfile /var/folders/j9/xmjlcym958b1fr0npsp9msvh0000gn/T/clojure-lsp.10085851538447407567.out

[oubidar-Abderrahim]

Hi, Thank you for reaching out, we'll take a look into this shortly

[oubidar-Abderrahim]

Tracked internally on GR 51257

[borkdude]

This still happens with Oracle GraalVM 23+37.1

[borkdude]

Tested with Java version: 25+11-LTS, vendor version: Oracle GraalVM 25-dev+11.1 which seems to fix this issue

[zakkak]

FTR the issue seems to be fixed in GraalVM for JDK 25 by 03bc71d#diff-e6462ab7fcea98cf6d96cc67964ce7db6055aebcd5a00554234426fc0019e4cdR284 in #10613

[borkdude]

Thanks. It would be awesome if this was released in the March 18 release so we don't have to wait until September, but I guess it's not possible anymore.

[lread]

This seems like a serious enough bug to maybe be backported for the 24.0.1 April 15, 2025 release? (hint, hint, hug, hug).