Index: src/gas/read.c
===================================================================
--- src.orig/gas/read.c
+++ src/gas/read.c
@@ -4112,9 +4112,14 @@ emit_expr (expressionS *exp, unsigned in
 	      || (get & hibit) == 0))
 	{		/* Leading bits contain both 0s & 1s.  */
 #if defined (BFD64) && BFD_HOST_64BIT_LONG_LONG
+#ifndef __MSVCRT__
 	  as_warn (_("value 0x%llx truncated to 0x%llx"),
 		   (unsigned long long) get, (unsigned long long) use);
 #else
+	  as_warn (_("value 0x%I64x truncated to 0x%I64x"),
+		   (unsigned long long) get, (unsigned long long) use);
+#endif
+#else
 	  as_warn (_("value 0x%lx truncated to 0x%lx"),
 		   (unsigned long) get, (unsigned long) use);
 #endif
=