emit the .size directive for global variables on ELF through
mcstreamer.

llvm-svn: 94416
diff --git a/llvm/lib/MC/MCNullStreamer.cpp b/llvm/lib/MC/MCNullStreamer.cpp
index 7c219b32..1d2b778 100644
--- a/llvm/lib/MC/MCNullStreamer.cpp
+++ b/llvm/lib/MC/MCNullStreamer.cpp
@@ -38,7 +38,7 @@
     virtual void EmitSymbolAttribute(MCSymbol *Symbol, MCSymbolAttr Attribute){}
 
     virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {}
-
+    virtual void EmitELFSize(MCSymbol *Symbol, const MCExpr *Value) {}
     virtual void EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
                                   unsigned ByteAlignment) {}
     virtual void EmitLocalCommonSymbol(MCSymbol *Symbol, uint64_t Size) {}