fixes #1343

tests/vm/twrongarray.nim

@@ -0,0 +1,17 @@
+discard """
+  errormsg: "cannot evaluate at compile time: size"
+  line: 16
+"""
+
+#bug #1343
+
+when false:
+  proc one(dummy: int, size: int) =
+    var x: array[size, int] # compile error: constant expression expected
+
+  proc three(size: int) =
+    var x: array[size * 1, int] # compile error: cannot evaluate at compile time: size
+
+proc two(dummy: int, size: int) =
+  var x: array[size * 1, int] # compiles, but shouldn't?
+  #assert(x.len == size) # just for fun