From: Jean Privat <jean@pryen.org>
Date: Tue, 6 Oct 2015 15:50:59 +0000 (-0400)
Subject: model: make `MPropDef::is_intro` more robust
X-Git-Tag: v0.7.9~41^2~9
X-Git-Url: http://nitlanguage.org

model: make `MPropDef::is_intro` more robust

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

diff --git a/src/model/model.nit b/src/model/model.nit
index 8d6bf7a..941bae7 100644
--- a/src/model/model.nit
+++ b/src/model/model.nit
@@ -2301,7 +2301,7 @@ abstract class MPropDef
 	redef var to_s: String is noinit
 
 	# Is self the definition that introduce the property?
-	fun is_intro: Bool do return mproperty.intro == self
+	fun is_intro: Bool do return isset mproperty._intro and mproperty.intro == self
 
 	# Return the next definition in linearization of `mtype`.
 	#