diff --git a/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
--- a/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
+++ b/lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
@@ -1352,7 +1352,6 @@
   if (!regex.IsValid())
     return;
 
-  auto old_size = sc_list.GetSize();
   CacheFunctionNames();
 
   std::set<uint32_t> resolved_ids;