RFR: 8257420: Zero VM build broken with clang after JDK-8256726 due to strlen() is not a constexpr

[Aleksey Shipilev]

On Mon, 30 Nov 2020 14:24:12 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> The newly added STATIC_ASSERT [1] breaks the build of Zero VM with clang.
> It complains that 'non-type template argument is not a constant expression' since strlen() [2] is not a constexpr.
> 
> Any comments?
> 
> Thanks.
> Best regards,
> Jie
> 
> [1] https://github.com/openjdk/jdk/blob/master/src/hotspot/share/interpreter/zero/bytecodeInterpreter.cpp#L1374
> [2] https://github.com/openjdk/jdk/blob/master/src/hotspot/share/runtime/flags/jvmFlagLookup.hpp#L42

Argh. Since I meant to backport the JDK-8257420 to 11u and 8u, and David was questioning the usefulness of `STATIC_ASSERT` in the original review, probably the simplest solution is to drop the `STATIC_ASSERT` from there entirely. This would make it a one-liner fix.

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PR: https://git.openjdk.java.net/jdk/pull/1518