RFR: 8288485: [PPC64] Usage of iostream breaks NullCallerTest

[Alan Bateman]

On Wed, 15 Jun 2022 13:25:21 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> I'd like to revert to "<stdio.h>" functions like it was before [JDK-8281001](https://bugs.openjdk.org/browse/JDK-8281001), except that I'm using stderr in order to preserve the new behavior. Also see JBS issue.

Switching it to stdio.h is okay but I think the JBS issue or PR should explain if why the test is failing on this platform.

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Marked as reviewed by alanb (Reviewer).

PR: https://git.openjdk.org/jdk19/pull/19