On Mon, 29 Jun 2026 22:19:39 GMT, April Ivy <[email protected]> wrote:

> As noted in https://bugs.openjdk.org/browse/JDK-8386802, `Util.entryList` and 
> `Util.moduleEntryList` copy their input lists using indexed access. This is 
> fine for `RandomAccess` lists but can be inefficient for 
> sequentially-accessed implementations.
> 
> This patch keeps the existing indexed path for `RandomAccess` lists and falls 
> back to iteration otherwise. Regression coverage is added for 
> non-`RandomAccess` inputs.
> 
> Testing:
> - `make CONF_CHECK=ignore java.base-java images`
> - `make CONF_CHECK=ignore test-only 
> TEST="test/jdk/jdk/classfile/UtilTest.java"`
> - `make CONF_CHECK=ignore test-only TEST="test/jdk/jdk/classfile"`
> - `make CONF_CHECK=ignore test-only TEST="test/jdk:tier1" 
> JTREG="VERBOSE=summary"`
> 
> ---------
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@liach could you take a look? Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/31719#issuecomment-4837790504

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