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

[James Henderson via llvm-commits]

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@@ -557,19 +559,101 @@ LLVMSymbolizer::getOrCreateObjectPair(const std::string &Path,
   if (!DbgObj)
     DbgObj = Obj;
   ObjectPair Res = std::make_pair(Obj, DbgObj);
-  std::string DbgObjPath = DbgObj->getFileName().str();
   auto Pair =
       ObjectPairForPathArch.emplace(std::make_pair(Path, ArchName), Res);
-  BinaryForPath.find(DbgObjPath)->second.pushEvictor([this, I = Pair.first]() {
+  std::string DbgObjPath = DbgObj->getFileName().str();
+  auto BinIter = BinaryForPath.find(DbgObjPath);
+  if (BinIter != BinaryForPath.end()) {
+    BinIter->second.pushEvictor([this, I = Pair.first]() {
     ObjectPairForPathArch.erase(I);
-  });
+    });
+  }
   return Res;
 }
 
+Expected<ObjectFile *> LLVMSymbolizer::getOrCreateObjectFromArchive(StringRef ArchivePath, 
+                                                                    StringRef MemberName, 
+                                                                    const std::string &ArchName) {
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jh7370 wrote:

Could `ArchName` be `StringRef`?

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