[jdk17u-dev] RFR: 8290901: Reduce use of -source in langtools tests

[Goetz Lindenmaier]

On Wed, 13 Mar 2024 15:36:36 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> I backport this for parity with 17.0.12-oracle.
> 
> 
> Applies clean except for patch of InstanceofTotalPattern.java which is a test that came with new feature "8282274: Compiler implementation for Pattern Matching for switch (Third Preview)".
> 
> Will mark clean.

GHA failure: Risc-V compile setup failed, unrelated.

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PR Comment: https://git.openjdk.org/jdk17u-dev/pull/2297#issuecomment-1997066653