RFR: Classfile signature bang support [v2]

[Maurizio Cimadamore]

On Tue, 20 Jan 2026 21:23:41 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Support parsing ! signatures in ClassFile API.
>
> Chen Liang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Review, various cleanup
>  - Merge branch 'bworld' of https://github.com/openjdk/valhalla into feature/cf-bang-sig
>  - Classfile signature bang support

src/java.base/share/classes/java/lang/classfile/ClassSignature.java line 84:

> 82:      * @param superclassSignature the superclass
> 83:      * @param superinterfaceSignatures the interfaces
> 84:      * @throws IllegalArgumentException if any signature has null marker

Suggestion:

     * @throws IllegalArgumentException if any signature has null markers

src/java.base/share/classes/java/lang/classfile/ClassSignature.java line 96:

> 94:      * @param superclassSignature the superclass
> 95:      * @param superinterfaceSignatures the interfaces
> 96:      * @throws IllegalArgumentException if any signature has null marker

Suggestion:

     * @throws IllegalArgumentException if any signature has null markers

src/java.base/share/classes/java/lang/classfile/MethodSignature.java line 136:

> 134:      * @param arguments signatures for the method parameters
> 135:      * @throws IllegalArgumentException if any of {@code arguments} is void or
> 136:      *         any of the exceptions signatures has null marker

Suggestion:

     *         any of the exceptions signatures has null markers

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

PR Review Comment: https://git.openjdk.org/valhalla/pull/1933#discussion_r2713228222
PR Review Comment: https://git.openjdk.org/valhalla/pull/1933#discussion_r2713228897
PR Review Comment: https://git.openjdk.org/valhalla/pull/1933#discussion_r2713229939