[NativeImageBuildStep] Unable to parse GraalVM for JDK 26

[jerboaa]

We see new native-image integration tests failing because Quarkus isn't able to parse the following JDK 26-based GraalVM version:

$ native-image --version
native-image 26 2026-03-17
GraalVM Runtime Environment GraalVM CE 26-dev+1.1 (build 26+1-jvmci-b01)
Substrate VM GraalVM CE 26-dev+1.1 (build 26+1, serial gc)

This results in the picocli-native integration test to fail with an error along the lines of this:

[INFO] --- quarkus:999-SNAPSHOT:track-config-changes (track-config-changes) @ quarkus-integration-test-picocli-native ---
[INFO] 
[INFO] --- compiler:3.14.0:compile (default-compile) @ quarkus-integration-test-picocli-native ---
[INFO] Recompiling the module because of changed source code.
[INFO] Compiling 21 source files with javac [debug deprecation parameters release 17] to target/classes
[INFO] 
[INFO] --- resources:3.3.1:testResources (default-testResources) @ quarkus-integration-test-picocli-native ---
[INFO] skip non existing resourceDirectory /home/sgehwolf/Documents/openjdk/quarkus/quarkus-source/integration-tests/picocli-native/src/test/resources
[INFO] 
[INFO] --- compiler:3.14.0:testCompile (default-testCompile) @ quarkus-integration-test-picocli-native ---
[INFO] Recompiling the module because of changed dependency.
[INFO] Compiling 4 source files with javac [debug deprecation parameters release 17] to target/test-classes
[INFO] 
[INFO] --- surefire:3.5.3:test (default-test) @ quarkus-integration-test-picocli-native ---
[INFO] Skipped
[INFO] 
[INFO] --- quarkus:999-SNAPSHOT:build (default) @ quarkus-integration-test-picocli-native ---
[INFO] [quarkus-build-caching-extension] Quarkus previous configuration not found
[INFO] [quarkus-build-caching-extension] Quarkus build goal marked as not cacheable
[INFO] [quarkus-build-caching-extension] Quarkus previous configuration not found
[INFO] [quarkus-build-caching-extension] Quarkus build goal marked as not cacheable
[INFO] [io.quarkus.deployment.pkg.steps.JarResultBuildStep] Building native image source jar: /home/sgehwolf/Documents/openjdk/quarkus/quarkus-source/integration-tests/picocli-native/target/quarkus-integration-test-picocli-native-999-SNAPSHOT-native-image-source-jar/quarkus-integration-test-picocli-native-999-SNAPSHOT-runner.jar
[INFO] [io.quarkus.deployment.pkg.steps.NativeImageBuildStep] Building native image from /home/sgehwolf/Documents/openjdk/quarkus/quarkus-source/integration-tests/picocli-native/target/quarkus-integration-test-picocli-native-999-SNAPSHOT-native-image-source-jar/quarkus-integration-test-picocli-native-999-SNAPSHOT-runner.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  4.801 s
[INFO] Finished at: 2025-06-16T12:09:32+02:00
[INFO] ------------------------------------------------------------------------
[INFO] Njord session closed
[INFO] 14 goals, 14 executed
[ERROR] Failed to execute goal io.quarkus:quarkus-maven-plugin:999-SNAPSHOT:build (default) on project quarkus-integration-test-picocli-native: Failed to build quarkus application: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
[ERROR] 	[error]: Build step io.quarkus.deployment.pkg.steps.NativeImageBuildStep#build threw an exception: java.lang.RuntimeException: Failed to get GraalVM version
[ERROR] 	at io.quarkus.deployment.pkg.steps.NativeImageBuildRunner.getGraalVMVersion(NativeImageBuildRunner.java:41)
[ERROR] 	at io.quarkus.deployment.pkg.steps.NativeImageBuildStep.build(NativeImageBuildStep.java:246)
[ERROR] 	at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:735)
[ERROR] 	at io.quarkus.deployment.ExtensionLoader$3.execute(ExtensionLoader.java:856)
[ERROR] 	at io.quarkus.builder.BuildContext.run(BuildContext.java:255)
[ERROR] 	at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2651)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2630)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1622)
[ERROR] 	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1589)
[ERROR] 	at java.base/java.lang.Thread.run(Thread.java:1474)
[ERROR] 	at org.jboss.threads.JBossThread.run(JBossThread.java:501)
[ERROR] Caused by: java.lang.NumberFormatException: For input string: "null"
[ERROR] 	at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)
[ERROR] 	at java.base/java.lang.Integer.parseInt(Integer.java:565)
[ERROR] 	at java.base/java.lang.Integer.parseInt(Integer.java:662)
[ERROR] 	at java.base/java.util.stream.ReferencePipeline$4$1.accept(ReferencePipeline.java:231)
[ERROR] 	at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:1024)
[ERROR] 	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:570)
[ERROR] 	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:560)
[ERROR] 	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:635)
[ERROR] 	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:291)
[ERROR] 	at java.base/java.util.stream.IntPipeline.toArray(IntPipeline.java:564)
[ERROR] 	at io.quarkus.runtime.graal.GraalVM$Version.breakdownVersion(GraalVM.java:127)
[ERROR] 	at io.quarkus.runtime.graal.GraalVM$Version.<init>(GraalVM.java:116)
[ERROR] 	at io.quarkus.deployment.pkg.steps.GraalVM$Version.<init>(GraalVM.java:229)
[ERROR] 	at io.quarkus.deployment.pkg.steps.GraalVM$VersionParseHelper.parse(GraalVM.java:89)
[ERROR] 	at io.quarkus.deployment.pkg.steps.GraalVM$Version.of(GraalVM.java:279)
[ERROR] 	at io.quarkus.deployment.pkg.steps.NativeImageBuildRunner.getGraalVMVersion(NativeImageBuildRunner.java:38)
[ERROR] 	... 11 more
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

We also see similar failures in our Mandrel CI here:
https://github.com/graalvm/mandrel/actions/runs/15646482173/job/44085716121#step:12:455

[jerboaa]

/cc @zakkak

[quarkus-bot]

/cc @Karm (native-image), @galderz (native-image), @zakkak (native-image)

[jerboaa]

I'll be working on a fix for this.

[zakkak]

The following trivial patch seems to work around the issue but we need to implement proper parsing for GraalVM/Mandrel for JDK >= 25.

diff --git a/core/deployment/src/main/java/io/quarkus/deployment/pkg/steps/GraalVM.java b/core/deployment/src/main/java/io/quarkus/deployment/pkg/steps/GraalVM.java
index 1da4ecacd7d..24ce617573f 100644
--- a/core/deployment/src/main/java/io/quarkus/deployment/pkg/steps/GraalVM.java
+++ b/core/deployment/src/main/java/io/quarkus/deployment/pkg/steps/GraalVM.java
@@ -152,7 +152,7 @@ private static String graalVersion(String buildInfo, int jdkFeature) {
             if (versMatcher.find()) {
                 return matchVersion(version);
             } else {
-                return Version.GRAAL_MAPPING.get(Integer.toString(jdkFeature));
+                return Version.GRAAL_MAPPING.getOrDefault(Integer.toString(jdkFeature), Integer.toString(jdkFeature));
             }
         }
 
diff --git a/core/runtime/src/main/java/io/quarkus/runtime/graal/GraalVM.java b/core/runtime/src/main/java/io/quarkus/runtime/graal/GraalVM.java
index a5852e74a7b..26411308b3f 100644
--- a/core/runtime/src/main/java/io/quarkus/runtime/graal/GraalVM.java
+++ b/core/runtime/src/main/java/io/quarkus/runtime/graal/GraalVM.java
@@ -49,7 +49,7 @@ static Version parse(String value) {
                 if (GRAALVM_CE_VERS_PREFIX.equals(vendor) || ORACLE_GRAALVM_VERS_PREFIX.equals(vendor)) {
                     String version = versionMatcher.group(VERSION_GROUP);
                     String jdkFeature = version.split("\\.", 2)[0];
-                    return new Version(value, Version.GRAAL_MAPPING.get(jdkFeature), Distribution.GRAALVM);
+                    return new Version(value, Version.GRAAL_MAPPING.getOrDefault(jdkFeature, jdkFeature), Distribution.GRAALVM);
                 } else if (LIBERICA_NIK_VERS_PREFIX.equals(vendor)) {
                     return new Version(value, versionMatcher.group(VERSION_GROUP), Distribution.LIBERICA);
                 } else if (MANDREL_VERS_PREFIX.equals(vendor)) {

[jerboaa]

Yes, but there is an issue with the JDK version that this uses. It hard-codes 21, while for JDK 22+ builds this is wrong. I see some integration test failures with this fixed (I need to re-test, though).

[jerboaa]

I see some integration test failures with this fixed (I need to re-test, though).

Fresh testing today showed no issues. PR is up.