RFR: 8315794: RISC-V: build fails with GCC 12.3

[Antonios Printezis]

The build failure happens when building on RISC-V with GCC 12.3. Is there a better way to address this than disabling the stringop-overflow warnings for the two files in question?

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

Commit messages:
 - 8315794: RISC-V: build fails with GCC 12.3

Changes: https://git.openjdk.org/jdk/pull/15593/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15593&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8315794
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/15593.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15593/head:pull/15593

PR: https://git.openjdk.org/jdk/pull/15593