java - Exporting a package from system module is not allowed with --release -


i have following program:

// module-info.java module { }  // main.java public class main {     public static void main(string[] args) {         system.out.println(sun.nio.bytebuffered.class);     } }

this program compiles --add-exports option:

> javac --add-exports java.base/sun.nio=a module-info.java main.java

however, when add --release argument, fails:

> javac --add-exports java.base/sun.nio=a --release 9 module-info.java main.java error: exporting package system module java.base not allowed --release 1 error

basically, these 2 commands equivalent. why latter 1 forbidden?

also, since idea passes --release argument javac, makes development in idea impossible if project needs internal api.

i'm using jdk 9+178.

it appears this bug ticket --release cannot used in combination --add-exports, --add-reads, , --patch-module.

from link:

the overall proposal here make --release 9 work consistently between jdk 9 , (anticipated) jdk 10, @ cost of possible different behavior of commands like:
$ <jdk9>/javac test.java
$ <jdk9>/javac --release 9 test.java

also:

which should acceptable, given intents of --release - allow compile code using supported apis given jdk release.

in particular proposal to:

[edit]

-prevents use of --add-exports, -add-reads , --patch-module system modules in combination --release (any version)

here file diff contains:

exporting package system module {0} not allowed --release

i can't comment on rationale above quote, pertains allowing jdk 9 work consistently jdk 10.


Comments

  1. Anonymous20 April 2022 at 05:52

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