[llvm] [llvm-objdump][ELF] Ensure offset to verdaux entry array does not go past size (PR #115284)

[James Henderson via llvm-commits]

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@@ -1921,6 +1921,7 @@ void MappingTraits<ELFYAML::VerdefEntry>::mapping(IO &IO,
   IO.mapOptional("Flags", E.Flags);
   IO.mapOptional("VersionNdx", E.VersionNdx);
   IO.mapOptional("Hash", E.Hash);
+  IO.mapOptional("AuxVOffset", E.AuxVOffset);
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jh7370 wrote:

If I understand it correctly, all this does is set the value - it doesn't actually cause the data to be written to do a different offset. Is that correct?

Assuming that's the case, I'd suggest naming it after the spec name of `vd_aux`, e.g. `VDAux`. This is to match the similar fields like `SHName` and `SHOffset` for sections, whose only impact is to modify the section header (in contrast with the `Name` and `Offset` fields etc).

https://github.com/llvm/llvm-project/pull/115284