Index: llvm/trunk/lib/Transforms/Utils/ImportedFunctionsInliningStatistics.cpp
===================================================================
--- llvm/trunk/lib/Transforms/Utils/ImportedFunctionsInliningStatistics.cpp
+++ llvm/trunk/lib/Transforms/Utils/ImportedFunctionsInliningStatistics.cpp
@@ -62,6 +62,8 @@
 void ImportedFunctionsInliningStatistics::setModuleInfo(const Module &M) {
   ModuleName = M.getName();
   for (const auto &F : M.functions()) {
+    if (F.isDeclaration())
+      continue;
     AllFunctions++;
     ImportedFunctions += int(F.getMetadata("thinlto_src_module") != nullptr);
   }
Index: llvm/trunk/test/Transforms/Inline/inline_stats.ll
===================================================================
--- llvm/trunk/test/Transforms/Inline/inline_stats.ll
+++ llvm/trunk/test/Transforms/Inline/inline_stats.ll
@@ -36,9 +36,12 @@
     ret void
 }
 
+declare void @external_decl()
+
 define void @external1() alwaysinline !thinlto_src_module !0 {
     call fastcc void @internal2()
     call fastcc void @external2();
+    call void @external_decl();
     ret void
 }