Index: llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp
===================================================================
--- llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp
+++ llvm/trunk/lib/DebugInfo/DWARF/DWARFFormValue.cpp
@@ -401,12 +401,14 @@
   case DW_FORM_addrx3:
   case DW_FORM_addrx4:
   case DW_FORM_GNU_addr_index: {
+    if (U == nullptr) {
+      OS << "<invalid dwarf unit>";
+      break;
+    }
     Optional<object::SectionedAddress> A = U->getAddrOffsetSectionItem(UValue);
     if (!A || DumpOpts.Verbose)
       AddrOS << format("indexed (%8.8x) address = ", (uint32_t)UValue);
-    if (U == nullptr)
-      OS << "<invalid dwarf unit>";
-    else if (A)
+    if (A)
       dumpSectionedAddress(AddrOS, DumpOpts, *A);
     else
       OS << "<no .debug_addr section>";