1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index e4188c39b07..24beebbd35a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -3016,6 +3016,11 @@ void DwarfDebug::emitDebugStrDWO() {
 void DwarfDebug::addDwarfTypeUnitType(DICompileUnit CUNode,
                                       StringRef Identifier, DIE *RefDie,
                                       DICompositeType CTy) {
+  // Flag the type unit reference as a declaration so that if it contains
+  // members (implicit special members, static data member definitions, member
+  // declarations for definitions in this CU, etc) consumers don't get confused
+  // and think this is a full definition.
+  CUMap.begin()->second->addFlag(RefDie, dwarf::DW_AT_declaration);
 
   const DwarfTypeUnit *&TU = DwarfTypeUnits[CTy];
   if (TU) {