RFR: 8336691: Test LongArgTest.java intermittent fails java.lang.NoClassDefFoundError: jdk/test/lib/Utils

[Jaikiran Pai]

On Thu, 18 Jul 2024 01:49:54 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> The testcase `serviceability/attach/LongArgTest.java` intermittent fails `java.lang.NoClassDefFoundError: jdk/test/lib/Utils`. Jtreg doesn't automatically compile `jdk/test/lib/Utils.class` and `jdk/test/lib/apps/LingeredApp.class` etc.. Maybe it's a jtreg  framework bug.
> I think it's necessory to compile `jdk.test.lib.Utils` and `jdk.test.lib.apps.LingeredApp` explicitly.
> Only change the testcase, the change has been verified, no risk.

test/hotspot/jtreg/serviceability/attach/LongArgTest.java line 30:

> 28:  * @library /test/lib
> 29:  * @modules jdk.attach/sun.tools.attach
> 30:  * @build jdk.test.lib.Utils jdk.test.lib.apps.LingeredApp LongArgTest

Hello @sendaoYan, the test class `LongArgTest` isn't needed in the `@build` set.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20228#discussion_r1682116429