Linkage Checker fails to detect the errors in gcsio 3.0.0

[suztomo]

Linkage Checker fails to detect the errors in gcsio 3.0.0

-r
--artifacts
com.google.cloud.bigdataoss:gcsio:3.0.0,com.google.protobuf:protobuf-java:4.28.2,com.google.protobuf:protobuf-java-util:4.28.2

Why is that? It reports errors on gcsio 2.2.16 successfully.

[suztomo]

The class files in gcsio 3.0.0 was silently discarded at

cloud-opensource-java/dependencies/src/main/java/com/google/cloud/tools/opensource/classpath/ClassDumper.java

Line 152 in 703b67c

if (isCompatibleClassFileVersion(javaClass)) {

  /**
   * Returns true if {@code javaClass} file format is compatible with this tool. Currently
   * Java 8 and earlier are supported.
   *
   * @see <a href="https://docs.oracle.com/javase/specs/jvms/se11/html/jvms-4.html#jvms-4.1">Java
   *     Virtual Machine Specification: The ClassFile Structure: minor_version, major_version</a>
   */
  private static boolean isCompatibleClassFileVersion(JavaClass javaClass) {
    int classFileMajorVersion = javaClass.getMajor();
    return 45 <= classFileMajorVersion && classFileMajorVersion <= 52;
  }

[suztomo]

Nov 07, 2024 9:51:38 AM com.google.cloud.tools.opensource.classpath.ClassDumper findSymbolReferences
WARNING: com.google.cloud.bigdataoss:gcsio:3.0.0 has 130 incompatible class files (class file major version > 52).
Nov 07, 2024 9:51:38 AM com.google.cloud.tools.opensource.classpath.ClassDumper findSymbolReferences
WARNING: com.google.cloud.bigdataoss:util:3.0.0 has 60 incompatible class files (class file major version > 52).
Nov 07, 2024 9:51:39 AM com.google.cloud.tools.opensource.classpath.ClassDumper findSymbolReferences
WARNING: org.graalvm.sdk:graal-sdk:22.3.2 has 353 incompatible class files (class file major version > 52).
Nov 07, 2024 9:51:39 AM com.google.cloud.tools.opensource.classpath.ClassDumper findSymbolReferences
WARNING: xerces:xmlParserAPIs:2.6.2 has 180 incompatible class files (class file major version > 52).
Nov 07, 2024 9:51:39 AM com.google.cloud.tools.opensource.classpath.ClassDumper findSymbolReferences
WARNING: xpp3:xpp3:1.1.4c has 1 incompatible class files (class file major version > 52).