Float values are invalid in enum

compiler/semtypes.nim

@@ -100,6 +100,8 @@ proc semEnum(c: PContext, n: PNode, prev: PType): PType =
       of tyString, tyCString:
         strVal = v
         x = counter
+      of tyFloat..tyFloat128:
+        localError(c.config, v.info, errOrdinalTypeExpected)
       else:
         x = getOrdValue(v)
       if i != 1:

tests/errmsgs/t9908_01.nim

@@ -6,5 +6,5 @@ line: 10
 # https://github.com/nim-lang/Nim/issues/9908
 
 type
-    X = enum
+  X = enum
-        a = ("a", "b")
+    a = ("a", "b")

tests/errmsgs/t9908_02.nim

@@ -0,0 +1,10 @@
+discard """
+errormsg: "ordinal type expected"
+line: 10
+"""
+
+# https://github.com/nim-lang/Nim/pull/9909#issuecomment-445519287
+
+type
+  E = enum
+    myVal = 80.9