[backport 3.10.x] Fix #12600: handle missing project index in forked executions - #12923
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[backport 3.10.x] Fix #12600: handle missing project index in forked executions#12923gnodet wants to merge 1 commit into
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Backport of #12911 (merged to master) to maven-3.10.x. Guards against NullPointerException from auto-unboxing when ProjectIndex.getIndices().get() returns null for a project not in the reactor. Throws descriptive LifecycleExecutionException instead. Test adapted for 3.10.x (Java 8 APIs, @Inject field injection). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Aug 29, 2026
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Clean backport of the #12600 NPE fix to maven-3.10.x. No issues found.
Backport observations:
- Production code change (
int→Integer+ null guard + descriptive exception) is identical across all four branches. - Test correctly adapted for 3.10.x APIs:
@Injectfield injection, 3-argexecuteForkedExecutions,Collections.singletonList/emptyListfor Java 8 compatibility. - Test differs from the 3.9.x backport (#12918) only in two comments describing the branch context.
- All CI checks pass: build (macOS, ubuntu, windows), Jenkins, integration tests (JDK 8, 25, 26).
🔀 Backport Status
All maintenance branches are covered:
master— #12911 (MERGED)maven-4.0.x— #12917 (MERGED)maven-3.10.x— #12923 (this PR)maven-3.9.x— #12918 (OPEN)
This review was generated by an AI agent and may contain inaccuracies. Please verify all suggestions before applying.
Claude Code on behalf of Guillaume Nodet
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Summary
master) tomaven-3.10.xNullPointerExceptionfrom auto-unboxing whenProjectIndex.getIndices().get()returns null for a project not in the reactorLifecycleExecutionExceptioninstead@Injectfield injection)Companion to #12918 (3.9.x backport).