Index: llvm/lib/MC/MCParser/AsmParser.cpp
===================================================================
--- llvm/lib/MC/MCParser/AsmParser.cpp
+++ llvm/lib/MC/MCParser/AsmParser.cpp
@@ -5885,6 +5885,8 @@
   SMLoc EqualLoc = Parser.getTok().getLoc();
   if (Parser.parseExpression(Value))
     return Parser.TokError("missing expression");
+  if (Name.empty())
+    return Parser.TokError("Symbol name cannot be empty");
 
   // Note: we don't count b as used in "a = b". This is to allow
   // a = b