RFR: 8330520: linux ppc64le clang build fails in os_linux.cpp with static_assert with no message is a C++17 extension [v2]

[Matthias Baesken]

> We run into the following build error when compiling on Linux ppc64le with the clang toolchain
> 
> 
> jdk/src/hotspot/os/linux/os_linux.cpp:2975:65: error: 'static_assert' with no message is a C++17 extension [-Werror,-Wc++17-extensions]
> static_assert(MADV_POPULATE_WRITE == MADV_POPULATE_WRITE_value);
> 
> 
> Currently it is not clear when "8314488: Compile the JDK as C++17" will be in the codebase so better fix the static_assert .

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  use STATIC_ASSERT

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18816/files
  - new: https://git.openjdk.org/jdk/pull/18816/files/adbb1d74..be7476f4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18816&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18816&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/18816.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18816/head:pull/18816

PR: https://git.openjdk.org/jdk/pull/18816