[jdk21] RFR: 8310405: Linker.Option.firstVariadicArg should specify which index values are valid

Wed Jun 28 17:42:14 UTC 2023

Hi all,

This pull request contains a backport of commit [7fffdb5e](https://github.com/openjdk/jdk/commit/7fffdb5e60351026c9ee77f438b8fe505d85de4c) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Jorn Vernee on 28 Jun 2023 and was reviewed by Maurizio Cimadamore.

Thanks!

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Commit messages:
 - Backport 7fffdb5e60351026c9ee77f438b8fe505d85de4c

Changes: https://git.openjdk.org/jdk21/pull/78/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21&pr=78&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310405
  Stats: 19 lines in 1 file changed: 15 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk21/pull/78.diff
  Fetch: git fetch https://git.openjdk.org/jdk21.git pull/78/head:pull/78

PR: https://git.openjdk.org/jdk21/pull/78