The backport is needed. We have failed builds in 10.x branch using old gradle infrastructure.

I will apply my "remove" option fix.

Uwe

Am 15.06.2025 um 10:30 schrieb Uwe Schindler:

Hi Dawid,

I'd prefer that solution, should I commit?:

 build-tools/build-infra/src/main/groovy/lucene.java.core.mrjar.gradle | 2 ++  build-tools/build-infra/src/main/groovy/lucene.java.javac.gradle      | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/build-tools/build-infra/src/main/groovy/lucene.java.core.mrjar.gradle b/build-tools/build-infra/src/main/groovy/lucene.java.core.mrjar.gradle
index 60a4588ba2d..227669c6d04 100644
--- a/build-tools/build-infra/src/main/groovy/lucene.java.core.mrjar.gradle +++ b/build-tools/build-infra/src/main/groovy/lucene.java.core.mrjar.gradle
@@ -43,6 +43,8 @@ configure(project(":lucene:core")) {
           "--add-exports",
           "java.base/jdk.incubator.vector=ALL-UNNAMED",
         ]
+        // hack because -Xlint:-options does not work for all options (bug in JDK?):
+        options.compilerArgs.remove("-Werror")

         def argsProvider = objects.newInstance(CompilerArgsProvider)
         argsProvider.apiJarFile.set(apijar)
diff --git a/build-tools/build-infra/src/main/groovy/lucene.java.javac.gradle b/build-tools/build-infra/src/main/groovy/lucene.java.javac.gradle
index 67aaf29c7a4..8f20d9c030b 100644
--- a/build-tools/build-infra/src/main/groovy/lucene.java.javac.gradle
+++ b/build-tools/build-infra/src/main/groovy/lucene.java.javac.gradle
@@ -81,7 +81,7 @@ tasks.withType(JavaCompile).configureEach {
     // proc:none was added because of LOG4J2-1925 / JDK-8186647
     options.compilerArgs += ["-proc:none"]

-    if (failOnWarningsOption.get() && (rootProject.ext.runtimeJavaVersion < JavaVersion.VERSION_25)) {
+    if (failOnWarningsOption.get()) {
       options.compilerArgs += "-Werror"
     }
   }

But this is indeed a regression in JDK 25, I can look into reporting it. We clearly pass the correct command line parameter to prevent "options" warning to trigger, but in the past I have seen similar failures also for other command line options. It looks like the "-options" is not always applied.

We may need to backport this fix, it just hasn't shown up on 10.x branch. The reason why it appeared was that I updated Java 25 to RC candidate and added Java 26 yesterday afternoon-

Uwe

Am 15.06.2025 um 09:07 schrieb Uwe Schindler:

I think it would be enough to only add that command line parameter unconditionally only to the MR-JAR compilation stuff and remove it from main javac definitions.

Uwe

Am 15.06.2025 um 08:56 schrieb Uwe Schindler:

Your analysis is right. Let's just suppress that warning for the MR-JAR compilation. I already disables more stuff.

Uwe

Am 14.06.2025 um 23:13 schrieb Dawid Weiss:

This... is weird. It complains when compiling against new Java, for example:

./gradlew compileMain24Java -Pruntime.java.home=/jdks/jdk-25+27 --rerun-tasks

the problem is this:

warning: [options] location of system modules is not set in conjunction with -source 24   not setting the location of system modules may lead to class files that cannot run on JDK 24     --release 24 is recommended instead of -source 24 -target 24 because it sets the location of system modules automatically
error: warnings found and -Werror specified

but we do set:

-Xlint:-options

so I'm not sure why this warning is even triggered. We also can't use --release because we do some other tweaks to java.base in lucene.java.core.mrjar.gradle.

I haven't had the time to try to track if it's a jdk regression.

Dawid

On Sat, Jun 14, 2025 at 10:13 PM Policeman Jenkins Server <jenk...@thetaphi.de> wrote:

    Build:
    https://jenkins.thetaphi.de/job/Lucene-nightly-main-Linux/263/
    Java: 64bit/hotspot/jdk-25-ea+27 -XX:-UseCompressedOops
    -XX:+UseParallelGC

    No tests ran.

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--
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail:u...@thetaphi.de
--
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail:u...@thetaphi.de
--
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail:u...@thetaphi.de

--
Uwe Schindler
Achterdiek 19, D-28357 Bremen
https://www.thetaphi.de
eMail:u...@thetaphi.de

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