RFR: 8208470: Type annotations on inner type that is an array component [v2]

[Vicente Romero]

> As stated in the bug great description by Werner D.:
> 
> Considering this example:
> 
> import java.lang.annotation.ElementType;
> import java.lang.annotation.Retention;
> import java.lang.annotation.RetentionPolicy;
> import java.lang.annotation.Target;
> 
> @Retention(RetentionPolicy.RUNTIME)
> @Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})
> @interface TA {
>   int value();
> }
> 
> class ArrayOfInner {
>   class Inner {}
> 
>   @TA(1) ArrayOfInner. @TA(2) Inner oi;
>   @TA(3) ArrayOfInner. @TA(4) Inner [] oia;
>   @TA(5) Inner i;
>   @TA(6) Inner [] ia;
> }
> 
> If compiled with javac 8, according to javap -v field ia has the annotation:
> 
>   ArrayOfInner$Inner[] ia;
>     descriptor: [LArrayOfInner$Inner;
>     flags: (0x0000)
>     RuntimeVisibleTypeAnnotations:
>       0: #10(#11=I#21): FIELD, location=[ARRAY, INNER_TYPE]
>         TA(
>           value=6
>         )
> 
> if compiled with javac > 8 ia has the annotation:
> 
>   ArrayOfInner$Inner[] ia;
>     descriptor: [LArrayOfInner$Inner;
>     flags: (0x0000)
>     RuntimeVisibleTypeAnnotations:
>       0: #10(#11=I#21): FIELD, location=[ARRAY]
>         TA(
>           value=6
>         )
> 
> Note the missing `INNER_TYPE` location. This PR is re-establishing the Java 8 behavior.
> 
> TIA

Vicente Romero has updated the pull request incrementally with one additional commit since the last revision:

  adding bug number to regression test

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/12522/files
  - new: https://git.openjdk.org/jdk/pull/12522/files/91bef728..8cf99672

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12522&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12522&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/12522.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12522/head:pull/12522

PR: https://git.openjdk.org/jdk/pull/12522