[llvm-bugs] [Bug 43008] New: CommandLine Error: Option 'limited-coverage-experimental' registered more than once!

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43008

            Bug ID: 43008
           Summary: CommandLine Error: Option
                    'limited-coverage-experimental' registered more than
                    once!
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Modules
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rene at exactcode.de
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org,
                    richard-llvm at metafoo.co.uk

Building 9.0-rc2 my resulting clang errors out early on startup with: :
CommandLine Error: Option 'limited-coverage-experimental' registered more than
once!
LLVM ERROR: inconsistency in registered CommandLine options

I immediately only see that defined once in the source though. Patching the
erorr way, and rebuilding I get a couple more:

: CommandLine Error: Option 'limited-coverage-experimental' registered more
than once!
: CommandLine Error: Option 'enable-value-profiling' registered more than once!
: CommandLine Error: Option 'filter' registered more than once!
: CommandLine Error: Option 'execute-concurrency' registered more than once!
: CommandLine Error: Option 'executor' registered more than once!

(and then it segfaults, but that is my fault of patching throwing the error
out).

This is on GNU (T2) Linux, and I even build it three times on a x32/gcc/glibc
amd64/gcc/glibc and amd64/gcc/musl VM with exactly same result on each three.

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