diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index e4fe203ffd12..2467143faff1 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -932,7 +932,8 @@ void CoverageMappingModuleGen::addFunctionMappingRecord(
   if (!FunctionRecordTy) {
     llvm::Type *FunctionRecordTypes[] = {Int8PtrTy, Int32Ty, Int32Ty, Int64Ty};
     FunctionRecordTy =
-        llvm::StructType::get(Ctx, makeArrayRef(FunctionRecordTypes), true);
+        llvm::StructType::get(Ctx, makeArrayRef(FunctionRecordTypes),
+                              /*isPacked=*/true);
   }
 
   llvm::Constant *FunctionRecordVals[] = {