RFR: 8375477: CoreUtils support for SA tests should attempt to locate and unzip core files when they have been zipped

[Chris Plummer]

On Sat, 17 Jan 2026 03:49:17 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

> The support for locating zipped (and subsequently unzipped) core files broke when a message in the hs_err file changed, causing CoreUtils.java to not detect the alternate location of the core file. It became broken 2 months ago by the changes for [JDK-8368551](https://bugs.openjdk.org/browse/JDK-8368551). That changed the hotspot message related to the core file location that CoreUtils was searching for:
> 
> 
>      if (core_pattern[0] == '|') {
>        written = jio_snprintf(buffer, bufferSize,
> - ""%s" (or dumping to %s/core.%d)",
> + ""%s" (alternatively, falling back to %s/core.%d)",
>                               &core_pattern[1], p, current_process_id());
> 
> 
> CoreUtils was checking for "or ", but it needs to check for "alternatively...".
> 
> Testing: I checked our CI runs, which used to skip all the SA core files tests on linux-x64 and linux-aarch64, and they are now running the tests and passing properly.

Ping! Could I get a second review please. Thank you!

-------------

PR Comment: https://git.openjdk.org/jdk/pull/29284#issuecomment-3787999438