[llvm-bugs] [Bug 26737] New: lld: implement --warn-common

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26737

            Bug ID: 26737
           Summary: lld: implement --warn-common
           Product: lld
           Version: unspecified
          Hardware: PC
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: All Bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: emaste at freebsd.org
                CC: llvm-bugs at lists.llvm.org
            Blocks: 23214
    Classification: Unclassified

--warn-common warns when combining a common symbol with another common symbol
or with a symbol definition.

It can easily be worked around (either in build infrastructure or by ignoring
it within lld) but it is a useful warning and is used in the FreeBSD
kernel/modules build. Thus, submitting this PR to track.

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