diff --git a/lld/COFF/DebugTypes.h b/lld/COFF/DebugTypes.h
--- a/lld/COFF/DebugTypes.h
+++ b/lld/COFF/DebugTypes.h
@@ -46,6 +46,7 @@
                                 const llvm::codeview::PrecompRecord *precomp);
 
 void loadTypeServerSource(llvm::MemoryBufferRef m);
+void clearTypeServerSourceInstances();
 
 // Temporary interface to get the dependency
 template <typename T> const T &retrieveDependencyInfo(const TpiSource *source);
diff --git a/lld/COFF/DebugTypes.cpp b/lld/COFF/DebugTypes.cpp
--- a/lld/COFF/DebugTypes.cpp
+++ b/lld/COFF/DebugTypes.cpp
@@ -90,6 +90,8 @@
 };
 } // namespace
 
+void lld::coff::clearTypeServerSourceInstances() { TypeServerSource::instances.clear(); }
+
 static std::vector<std::unique_ptr<TpiSource>> GC;
 
 TpiSource::TpiSource(TpiKind k, const ObjFile *f) : kind(k), file(f) {
diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -84,6 +84,8 @@
   ImportFile::instances.clear();
   BitcodeFile::instances.clear();
   memset(MergeChunk::instances, 0, sizeof(MergeChunk::instances));
+  OutputSection::clearOutputSections();
+  clearTypeServerSourceInstances();
   return !errorCount();
 }
 
diff --git a/lld/COFF/Writer.h b/lld/COFF/Writer.h
--- a/lld/COFF/Writer.h
+++ b/lld/COFF/Writer.h
@@ -75,6 +75,8 @@
 
   std::vector<PartialSection *> contribSections;
 
+  static void clearOutputSections();
+
 private:
   uint32_t stringTableOff = 0;
 };
diff --git a/lld/COFF/Writer.cpp b/lld/COFF/Writer.cpp
--- a/lld/COFF/Writer.cpp
+++ b/lld/COFF/Writer.cpp
@@ -82,6 +82,8 @@
 // this can be indexed by Chunk::getOutputSection.
 static std::vector<OutputSection *> outputSections;
 
+void OutputSection::clearOutputSections() { outputSections.clear(); }
+
 OutputSection *Chunk::getOutputSection() const {
   return osidx == 0 ? nullptr : outputSections[osidx - 1];
 }