diff --git a/lld/COFF/ICF.cpp b/lld/COFF/ICF.cpp
index 7684b2c80a32..f7dd0a1295a3 100644
--- a/lld/COFF/ICF.cpp
+++ b/lld/COFF/ICF.cpp
@@ -51,7 +51,6 @@ private:
   bool equalsConstant(const SectionChunk *A, const SectionChunk *B);
   bool equalsVariable(const SectionChunk *A, const SectionChunk *B);
 
-  uint32_t getHash(SectionChunk *C);
   bool isEligible(SectionChunk *C);
 
   size_t findBoundary(size_t Begin, size_t End);
diff --git a/lld/COFF/InputFiles.h b/lld/COFF/InputFiles.h
index 78a95014d445..08b730683a37 100644
--- a/lld/COFF/InputFiles.h
+++ b/lld/COFF/InputFiles.h
@@ -99,7 +99,6 @@ public:
 
 private:
   std::unique_ptr<Archive> File;
-  std::string Filename;
   llvm::DenseSet<uint64_t> Seen;
 };
 
diff --git a/lld/COFF/MarkLive.h b/lld/COFF/MarkLive.h
index 3d7ef932e45d..9c584dc19e2b 100644
--- a/lld/COFF/MarkLive.h
+++ b/lld/COFF/MarkLive.h
@@ -15,6 +15,8 @@
 namespace lld {
 namespace coff {
 
+class Chunk;
+
 void markLive(ArrayRef<Chunk *> Chunks);
 
 } // namespace coff
diff --git a/lld/COFF/Writer.h b/lld/COFF/Writer.h
index c4309175302f..36ad259a09f0 100644
--- a/lld/COFF/Writer.h
+++ b/lld/COFF/Writer.h
@@ -35,7 +35,6 @@ public:
   void addChunk(Chunk *C);
   void insertChunkAtStart(Chunk *C);
   void merge(OutputSection *Other);
-  void addPermissions(uint32_t C);
   void setPermissions(uint32_t C);
   uint64_t getRVA() { return Header.VirtualAddress; }
   uint64_t getFileOff() { return Header.PointerToRawData; }