fixes #7331

tests/errmsgs/twrong_at_operator.nim

@@ -0,0 +1,15 @@
+discard """
+errormsg: "type mismatch: got <array[0..0, type int]>"
+line: 15
+nimout: '''
+twrong_at_operator.nim(15, 30) Error: type mismatch: got <array[0..0, type int]>
+but expected one of:
+proc `@`[T](a: openArray[T]): seq[T]
+proc `@`[IDX, T](a: array[IDX, T]): seq[T]
+
+expression: @[int]
+'''
+"""
+
+# bug #7331
+var seqOfStrings: seq[int] = @[int]