diff --git a/clang/tools/driver/cc1as_main.cpp b/clang/tools/driver/cc1as_main.cpp
index 5bce70cb2a1b..288e110cf49c 100644
--- a/clang/tools/driver/cc1as_main.cpp
+++ b/clang/tools/driver/cc1as_main.cpp
@@ -274,6 +274,7 @@ static bool ExecuteAssembler(AssemblerInvocation &Opts, Diagnostic &Diags) {
     TargetAsmBackend *TAB = TheTarget->createAsmBackend(Opts.Triple);
     Str.reset(TheTarget->createObjectStreamer(Opts.Triple, Ctx, *TAB, *Out,
                                               CE, Opts.RelaxAll));
+    Str.get()->InitSections();
   }
 
   OwningPtr<MCAsmParser> Parser(createMCAsmParser(*TheTarget, SrcMgr, Ctx,