git: openjdk/jdk: 8268165: AsyncLogging will crash if rotate() fails

[Yasumasa Suenaga]

Changeset: 81054789
Author:    Xin Liu <xliu at openjdk.org>
Committer: Yasumasa Suenaga <ysuenaga at openjdk.org>
Date:      2021-06-08 07:20:13 +0000
URL:       https://git.openjdk.java.net/jdk/commit/81054789a32f29b06f0804e09aabd7cf17464778

8268165: AsyncLogging will crash if rotate() fails

LogFileOutput::rotate() may leave _stream NULL because os::fopen() may return NULL due to space or inode limitations.  AsyncLogWriter::write() calls LogFileOutput::write_blocking() without null check.  Null check is added to prevent from crashing.

Reviewed-by: ysuenaga

! src/hotspot/share/logging/logFileOutput.cpp