From: Jean Privat <jean@pryen.org>
Date: Tue, 16 Jun 2015 14:50:28 +0000 (-0400)
Subject: compiler: no-on for `AIsaExpr` without a valid `cast_type`
X-Git-Tag: v0.7.6~34^2~1
X-Git-Url: http://nitlanguage.org

compiler: no-on for `AIsaExpr` without a valid `cast_type`

Signed-off-by: Jean Privat <jean@pryen.org>
---

diff --git a/src/compiler/abstract_compiler.nit b/src/compiler/abstract_compiler.nit
index 221e628..8fae169 100644
--- a/src/compiler/abstract_compiler.nit
+++ b/src/compiler/abstract_compiler.nit
@@ -3044,7 +3044,9 @@ redef class AIsaExpr
 	redef fun expr(v)
 	do
 		var i = v.expr(self.n_expr, null)
-		return v.type_test(i, self.cast_type.as(not null), "isa")
+		var cast_type = self.cast_type
+		if cast_type == null then return null # no-no on broken node
+		return v.type_test(i, cast_type, "isa")
 	end
 end