RFR: JDK-8327986: ASAN reports use-after-free in DirectivesParserTest.empty_object_vm

[Vladimir Kozlov]

On Tue, 12 Mar 2024 13:57:53 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> ASAN reports a use-after-free, because we feed the string we got from `setlocale` back to `setlocale`, but the libc owns this string, and the libc decided to free it in the meantime.
> 
> According to POSIX, it should be valid to pass into setlocale output from setlocale.
> 
> However, glibc seems to delete the old string when calling setlocale again:
> 
> https://codebrowser.dev/glibc/glibc/locale/setlocale.c.html#198
> 
> Best to make a copy, and pass in the copy to setlocale.

Looks good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/18235#pullrequestreview-1961106669