Index: COFF/Chunks.cpp
===================================================================
--- COFF/Chunks.cpp
+++ COFF/Chunks.cpp
@@ -271,7 +271,8 @@
     return;
   // Copy section contents from source object file to output file.
   ArrayRef<uint8_t> A = getContents();
-  memcpy(Buf + OutputSectionOff, A.data(), A.size());
+  if (!A.empty())
+    memcpy(Buf + OutputSectionOff, A.data(), A.size());
 
   // Apply relocations.
   size_t InputSize = getSize();