JDK15 - Illegal reflective access by com.google.errorprone.util.ErrorProneTokens$CommentSavingTokenizer

[jorisgeer]

Description of the problem / feature request:

Compiling josm.openstreetmap.de with ant and JDK 15 shows :

[javac] WARNING: An illegal reflective access operation has occurred
[javac] WARNING: Illegal reflective access by com.google.errorprone.util.ErrorProneTokens$CommentSavingTokenizer (file:/../com.google.errorprone/error_prone_check_api/jars/error_prone_check_api-2.5.1.jar) to field com.sun.tools.javac.parser.JavaTokenizer.reader
[javac] WARNING: Please consider reporting this to the maintainers of com.google.errorprone.util.ErrorProneTokens$CommentSavingTokenizer
[javac] WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
[javac] WARNING: All illegal access operations will be denied in a future release

Feature requests: what underlying problem are you trying to solve with this feature?

Replace this line with your answer.

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Compile with javac 15.0.2

What version of Error Prone are you using?

2.5.1

Have you found anything relevant by searching the web?

no

[cushon]

Passing the --add-exports= and --add-opens= flags documented in http://errorprone.info/docs/installation will resolve the warning. (The flags are documented as applying to JDK 16 because it makes these diagnostics errors instead of warnings, so they become non-optional.)

[davido]

I am seeing this error also with Bazel 5.0.0. Should this be fixed on Bazel side?

INFO: From Building java/com/google/gerrit/httpd/libhttpd-class.jar (101 source files) and running annotation processors (AutoAnnotationProcessor, AutoValueProcessor, AutoOneOfProcessor):
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.errorprone.util.ErrorProneTokens$CommentSavingTokenizer (file:/b/f/w/external/remote_java_tools/java_tools/JavaBuilder_deploy.jar) to field com.sun.tools.javac.parser.JavaTokenizer.reader
WARNING: Please consider reporting this to the maintainers of com.google.errorprone.util.ErrorProneTokens$CommentSavingTokenizer
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

[cushon]

Should this be fixed on Bazel side?

Yes, I just mailed a change