Index: lib/Target/X86/AsmParser/X86AsmParser.cpp
===================================================================
--- lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -3002,6 +3002,7 @@
     getStreamer().InitSections(false);
     Section = getStreamer().getCurrentSection().first;
   }
+  assert(Section && "must have section to emit alignment");
   if (Section->UseCodeAlign())
     getStreamer().EmitCodeAlignment(2, 0);
   else