diff options
| -rw-r--r-- | compiler/semexprs.nim | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/semexprs.nim b/compiler/semexprs.nim index 61d4687a3..17a3082ff 100644 --- a/compiler/semexprs.nim +++ b/compiler/semexprs.nim @@ -518,8 +518,9 @@ proc isOpImpl(c: PContext, n: PNode, flags: TExprFlags): PNode = result.typ = n.typ proc semIs(c: PContext, n: PNode, flags: TExprFlags): PNode = - if n.len != 3: + if n.len != 3 or n[2].kind == nkEmpty: localError(c.config, n.info, "'is' operator takes 2 arguments") + return errorNode(c, n) let boolType = getSysType(c.graph, n.info, tyBool) result = n |