Closure Compiler / JDK-25: WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
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Adrian Wenz
Jan 26, 2026, 1:54:20 AM (3 days ago) Jan 26
to Closure Compiler Discuss
When compiling '*.js' files with the latest (and previous) Closure Compiler (v20260121) together with the JDK-25 the following warnings are issued:
'WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
WARNING: sun.misc.Unsafe::arrayBaseOffset has been called by com.google.javascript.jscomp.jarjar.com.google.protobuf.UnsafeUtil$MemoryAccessor (file:closure-compiler.jar)
WARNING: Please consider reporting this to the maintainers of class com.google.javascript.jscomp.jarjar.com.google.protobuf.UnsafeUtil$MemoryAccessor
WARNING: sun.misc.Unsafe::arrayBaseOffset will be removed in a future release'.
Could you please update the Closure Compiler accordingly to prevent these warnings to occur in future releases?
Thanks.
A. Wenz
'WARNING: A terminally deprecated method in sun.misc.Unsafe has been called
WARNING: sun.misc.Unsafe::arrayBaseOffset has been called by com.google.javascript.jscomp.jarjar.com.google.protobuf.UnsafeUtil$MemoryAccessor (file:closure-compiler.jar)
WARNING: Please consider reporting this to the maintainers of class com.google.javascript.jscomp.jarjar.com.google.protobuf.UnsafeUtil$MemoryAccessor
WARNING: sun.misc.Unsafe::arrayBaseOffset will be removed in a future release'.
Could you please update the Closure Compiler accordingly to prevent these warnings to occur in future releases?
Thanks.
A. Wenz
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