Index: llvm/lib/MC/MCParser/AsmParser.cpp
===================================================================
--- llvm/lib/MC/MCParser/AsmParser.cpp
+++ llvm/lib/MC/MCParser/AsmParser.cpp
@@ -1666,7 +1666,7 @@
   AsmToken ID = getTok();
   SMLoc IDLoc = ID.getLoc();
   StringRef IDVal;
-  int64_t LocalLabelVal = -1;
+  int32_t LocalLabelVal = -1;
   if (Lexer.is(AsmToken::HashDirective))
     return parseCppHashLineFilenameComment(IDLoc);
   // Allow an integer followed by a ':' as a directional local label.
Index: llvm/test/MC/AsmParser/label_errors.s
===================================================================
--- /dev/null
+++ llvm/test/MC/AsmParser/label_errors.s
@@ -0,0 +1,5 @@
+# RUN: not llvm-mc -triple i386-unknown-unknown %s 2>&1 > /dev/null| FileCheck %s --check-prefix=CHECK-ERROR
+
+
+# CHECK-ERROR: error: unexpected token at start of statement
+0777777777777777: foo