[lld] [lld][MachO] Support for -interposable (PR #131813)

[John Holdsworth via llvm-commits]

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@@ -204,8 +204,9 @@ Defined *SymbolTable::addDefined(StringRef name, InputFile *file,
 
   // With -flat_namespace, all extern symbols in dylibs are interposable.
   // FIXME: Add support for `-interposable` (PR53680).
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johnno1962 wrote:

Thanks for the info @carlocab, I was able to adapt an existing test to test symbols interpose with the new flag.

https://github.com/llvm/llvm-project/pull/131813