[MC] Don't crash on division by zero.

[oota-llvm.git] / lib / MC / MCDwarf.cpp

diff --git a/lib/MC/MCDwarf.cpp b/lib/MC/MCDwarf.cpp
index cfe58dae343cd55d86c0c2c4aa456d978107122b..2d8912b71f14875a4ef3279e6b2ae9d6c7b3feeb 100644 (file)
--- a/lib/MC/MCDwarf.cpp
+++ b/lib/MC/MCDwarf.cpp
@@ -220,7 +220,7 @@ MCDwarfLineTableHeader::Emit(MCStreamer *MCOS,
       1  // DW_LNS_set_isa
   };
   assert(array_lengthof(StandardOpcodeLengths) >=
-         (Params.DWARF2LineOpcodeBase - 1));
+         (Params.DWARF2LineOpcodeBase - 1U));
   return Emit(MCOS, Params, ArrayRef<char>(StandardOpcodeLengths,
                                            Params.DWARF2LineOpcodeBase - 1));
 }