Update jacoco to v0.8.15 (#921)

* Update jacoco to v0.8.15

* Update dependency jacoco to v0.8.15

* Apply post-upgrade adjustments for JaCoCo 0.8.15

Update the shaded internal package hash in JaCoCoPreMain and
LenientCoverageTransformer, port the upstream Analyzer change
(synthetic check replaced with package-info check) into OpenAnalyzer,
and add a changelog entry for the user-visible Java 26/27 support.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Extend Kotlin string transformer to cover ClassAnalyzer

JaCoCo 0.8.15 inlines the Lkotlin/Metadata; descriptor constant from
Filters into ClassAnalyzer.visitAnnotation, one package above the
filter/ subpackage. The shadow build relocates kotlin to shadow.kotlin,
which mangles this literal; without the revert, ClassAnalyzer no longer
recognizes the Kotlin metadata annotation, the SMAP is never parsed,
and KotlinInlineFilter is silently disabled. Broaden the post-build
transformer's path match accordingly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Florian Dreier <dreier@cqse.eu>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: 3 people

CHANGELOG.md

@@ -5,6 +5,7 @@ We use [semantic versioning](http://semver.org/):
 - PATCH version when you make backwards compatible bug fixes.
 
 # Next version
+- [feature] _agent_: Added official support for Java 26 and experimental support for Java 27 (via JaCoCo 0.8.15)
 
 # 36.5.2
 - [security fix] _agent_: The Teamscale access token was logged in clear text in DEBUG-level logs (e.g., when `debug=true` was set) and in the WARN-level log emitted when multiple `-javaagent` arguments are present. The token is now obfuscated in those logs as well, matching INFO-level behavior.

agent/src/main/java/com/teamscale/jacoco/agent/JaCoCoPreMain.java

@@ -13,15 +13,15 @@
 
 package com.teamscale.jacoco.agent;
 
-import org.jacoco.agent.rt.internal_29a6edd.Agent;
-import org.jacoco.agent.rt.internal_29a6edd.AgentModule;
-import org.jacoco.agent.rt.internal_29a6edd.CoverageTransformer;
-import org.jacoco.agent.rt.internal_29a6edd.IExceptionLogger;
-import org.jacoco.agent.rt.internal_29a6edd.PreMain;
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.AgentOptions;
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.IRuntime;
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.InjectedClassRuntime;
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.ModifiedSystemClassRuntime;
+import org.jacoco.agent.rt.internal_bac9136.Agent;
+import org.jacoco.agent.rt.internal_bac9136.AgentModule;
+import org.jacoco.agent.rt.internal_bac9136.CoverageTransformer;
+import org.jacoco.agent.rt.internal_bac9136.IExceptionLogger;
+import org.jacoco.agent.rt.internal_bac9136.PreMain;
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.AgentOptions;
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.IRuntime;
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.InjectedClassRuntime;
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.ModifiedSystemClassRuntime;
 import org.slf4j.Logger;
 
 import java.lang.instrument.Instrumentation;

agent/src/main/kotlin/com/teamscale/jacoco/agent/LenientCoverageTransformer.kt

@@ -1,15 +1,15 @@
 package com.teamscale.jacoco.agent
 
-import org.jacoco.agent.rt.internal_29a6edd.CoverageTransformer
-import org.jacoco.agent.rt.internal_29a6edd.IExceptionLogger
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.AgentOptions
-import org.jacoco.agent.rt.internal_29a6edd.core.runtime.IRuntime
+import org.jacoco.agent.rt.internal_bac9136.CoverageTransformer
+import org.jacoco.agent.rt.internal_bac9136.IExceptionLogger
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.AgentOptions
+import org.jacoco.agent.rt.internal_bac9136.core.runtime.IRuntime
 import org.slf4j.Logger
 import java.lang.instrument.IllegalClassFormatException
 import java.security.ProtectionDomain
 
 /**
- * A class file transformer which delegates to the JaCoCo [org.jacoco.agent.rt.internal_29a6edd.CoverageTransformer] to do the actual instrumentation,
+ * A class file transformer which delegates to the JaCoCo [org.jacoco.agent.rt.internal_bac9136.CoverageTransformer] to do the actual instrumentation,
  * but treats instrumentation errors e.g. due to unsupported class file versions more lenient by only logging them, but
  * not bailing out completely. Those unsupported classes will not be instrumented and will therefore not be contained in
  * the collected coverage report.

buildSrc/src/main/kotlin/KotlinStringTransformer.kt

@@ -9,7 +9,10 @@ import kotlin.io.path.pathString
 
 /**
  * Reverts the transformation from "kotlin" to "shadow/kotlin" within strings of
- * "org/jacoco/core/internal/analysis/filter" to make JaCoCo correctly process Kotlin class files.
+ * "org/jacoco/core/internal/analysis" (including the "filter" subpackage) to make JaCoCo correctly
+ * process Kotlin class files. Since JaCoCo 0.8.15 the kotlin.Metadata descriptor literal is also
+ * inlined into ClassAnalyzer (in the parent "analysis" package), so the filter subpackage alone is
+ * not enough.
  */
 fun revertKotlinPackageChanges(archiveFile: Provider<RegularFile>) {
 	val zip = archiveFile.get().asFile.toPath()
@@ -37,7 +40,7 @@ private fun transformClass(file: Path) {
 }
 
 private fun shouldTransform(path: String): Boolean {
-	return path.contains("org/jacoco/core/internal/analysis/filter")
+	return path.contains("org/jacoco/core/internal/analysis")
 }
 
 private class StringReplacerClassVisitor(classNode: ClassVisitor?) : ClassVisitor(Opcodes.ASM9, classNode) {

buildSrc/src/main/kotlin/com.teamscale.coverage.gradle.kts

@@ -4,7 +4,7 @@ plugins {
 }
 
 jacoco {
-	toolVersion = "0.8.14"
+	toolVersion = "0.8.15"
 }
 
 tasks.jacocoTestReport {

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 # When upgrading JaCoCo to a newer version, make sure to
 # check the comment in the OpenAnalyzer.java, JaCoCoPreMain.java and CachingInstructionsBuilder.java
 # and update the internal_xxxxxx hash included in the imports in LenientCoverageTransformer.java and JaCoCoPreMain.java.
-jacoco = "0.8.14"
+jacoco = "0.8.15"
 # We need to stay on the 1.3.x release line as 1.4.x requires Java 11
 logback = "1.3.16"
 retrofit = "3.0.0"

report-generator/src/main/java/com/teamscale/report/jacoco/OpenAnalyzer.java

@@ -113,7 +113,7 @@ protected void analyzeClass(final byte[] source) {
 		if ((reader.getAccess() & Opcodes.ACC_MODULE) != 0) {
 			return;
 		}
-		if ((reader.getAccess() & Opcodes.ACC_SYNTHETIC) != 0) {
+		if (reader.getClassName().endsWith("/package-info")) {
 			return;
 		}
 		final ClassVisitor visitor = createAnalyzingVisitor(classId,