RFR: 8270083: -Wnonnull errors happen with GCC 11.1.1

[Yasumasa Suenaga]

I attempted to build OpenJDK on Fedora 34 with gcc-11.1.1-3.fc34.x86_64, but I saw following errors:


In file included from /home/ysuenaga/github-forked/jdk/src/hotspot/share/runtime/frame.inline.hpp:42,
                 from /home/ysuenaga/github-forked/jdk/src/hotspot/cpu/x86/abstractInterpreter_x86.cpp:29:

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Commit messages:
 - 8270083: -Wnonnull errors happen with GCC 11.1.1

Changes: https://git.openjdk.java.net/jdk/pull/4719/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4719&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8270083
  Stats: 42 lines in 9 files changed: 38 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4719.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4719/head:pull/4719

PR: https://git.openjdk.java.net/jdk/pull/4719