RFR: 8337302: Undefined type variable results in null [v4]

[Joe Darcy]

On Tue, 13 Aug 2024 23:41:06 GMT, Rafael Winterhalter <winterhalter at openjdk.org> wrote:

>> When a type uses a type variable without a declaration, no exception is thrown. This change triggers a `TypeNotFoundException` to be thrown.
>
> Rafael Winterhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8337302: Fix copyright years.

test/jdk/java/lang/reflect/Generics/TestMissingTypeVariable.java line 43:

> 41: public class TestMissingTypeVariable {
> 42: 
> 43:     public static void main(String[] args) throws Exception {

To make the test more understandable to casual readers, I suggest putting the corresponding source code, as much as possible, as a comment.

test/jdk/java/lang/reflect/Generics/TestMissingTypeVariable.java line 52:

> 50:                     classBuilder.withField("f",
> 51:                             ClassDesc.of("java.lang.Object"),
> 52:                             fieldBuilder -> fieldBuilder.withFlags(AccessFlag.PUBLIC).with(SignatureAttribute.of(Signature.parseFrom("TA;"))));

If the signature is incorrect, please leave a comment describing how it is incorrect. "// Type A is non-existent" etc.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20535#discussion_r1719247725
PR Review Comment: https://git.openjdk.org/jdk/pull/20535#discussion_r1719248512