Integrated: 7027: Avoid NPE for callers of TransformRegistry#getTransformData

[Gunnar Morling]

On Sun, 29 Nov 2020 19:27:48 GMT, Gunnar Morling <github.com+28612+gunnarmorling at openjdk.org> wrote:

> …) of no transform data exists
> 
> @thegreystone, @Josh-Matsuoka, et al., this fixes an NPE in the `Transformer` class if there is no metadata for the given class (we unconditionally try to iterate over the returned list). I noticed this while debugging something else, it seems this NPE gets swallowed elsewhere, but creating it over and over is costly of course.
> 
> I think never returning null from a collection method is a good practice anyways, so I've changed it accordingly. Could someone log an issue for this, so I can reference it? Thanks!

This pull request has now been integrated.

Changeset: 65187e94
Author:    Gunnar Morling <gunnar.morling at googlemail.com>
Committer: Guru Hb <ghb at openjdk.org>
URL:       https://git.openjdk.java.net/jmc/commit/65187e94
Stats:     42 lines in 3 files changed: 11 ins; 2 del; 29 mod

7027: Avoid NPE for callers of TransformRegistry#getTransformData

Reviewed-by: hirt

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PR: https://git.openjdk.java.net/jmc/pull/169