Kevin Enderby 054620884a Change all but the last ErrorOr<...> use for MachOUniversalBinary to Expected<...> to ...

allow a good error message to be produced.

I added the one test case that the object file tools could produce an error
message.  The other two errors can’t be triggered if the input file is passed
through sys::fs::identify_magic().  But the malformedError("bad magic number")
does get triggered by the logic in llvm-dsymutil when dealing with a normal
Mach-O file.  The other "File too small ..." error would take a logic error
currently to produce and is not tested for.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273946 91177308-0d34-0410-b5e6-96231b3b80d8

2016-06-27 21:39:39 +00:00

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