[llvm] big archive recognition by the llvm-symbolizer (PR #150401)

[James Henderson via llvm-commits]

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@@ -321,7 +323,7 @@ bool checkFileCRC(StringRef Path, uint32_t CRCHash) {
 
 bool getGNUDebuglinkContents(const ObjectFile *Obj, std::string &DebugName,
                              uint32_t &CRCHash) {
-  if (!Obj)
+  if (!Obj || !isa<ObjectFile>(Obj))
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jh7370 wrote:

When could this `isa` actually fail and why is it changing here?

https://github.com/llvm/llvm-project/pull/150401