Bug#1052694: libeuclid-java: FTBFS with OpenJDK 21 due to conflicting reversed() methods in the List and Deque interfaces

[Emmanuel Bourg]

Source: libeuclid-java
Version: 2.6-1
Severity: important
Tags: ftbfs sid trixie
User: debian-java at lists.debian.org
Usertags: default-java21


libeuclid-java fails to build with OpenJDK 21 because the ThriftyList class
implements the java.util.Deque and java.util.List interface which now share
a similar reversed() method but with an incompatible return type:


  [INFO] --- maven-compiler-plugin:3.10.1:compile (default-compile) @ euclid ---
  [INFO] Changes detected - recompiling the module!
  [INFO] Compiling 100 source files to /<<PKGBUILDDIR>>/target/classes
  [INFO] /<<PKGBUILDDIR>>/src/main/java/org/xmlcml/euclid/RealMatrix.java: Some input files use or override a deprecated API.
  [INFO] /<<PKGBUILDDIR>>/src/main/java/org/xmlcml/euclid/RealMatrix.java: Recompile with -Xlint:deprecation for details.
  [INFO] /<<PKGBUILDDIR>>/src/main/java/org/xmlcml/euclid/RealRange.java: Some input files use or override a deprecated API that is marked for removal.
  [INFO] /<<PKGBUILDDIR>>/src/main/java/org/xmlcml/euclid/RealRange.java: Recompile with -Xlint:removal for details.
  [INFO] /<<PKGBUILDDIR>>/src/main/java/blogspot/software_and_algorithms/stern_library/data_structure/ThriftyList.java: Some input files use unchecked or unsafe operations.
  [INFO] /<<PKGBUILDDIR>>/src/main/java/blogspot/software_and_algorithms/stern_library/data_structure/ThriftyList.java: Recompile with -Xlint:unchecked for details.
  [INFO] -------------------------------------------------------------
  [ERROR] COMPILATION ERROR :
  [INFO] -------------------------------------------------------------
  [ERROR] /<<PKGBUILDDIR>>/src/main/java/blogspot/software_and_algorithms/stern_library/data_structure/ThriftyList.java:[74,8] types java.util.Deque<T> and java.util.List<T> are incompatible;
    both define reversed(), but with unrelated return types
  [INFO] 1 error
  [INFO] -------------------------------------------------------------