From: Jean Privat <jean@pryen.org>
Date: Tue, 26 Nov 2013 15:00:11 +0000 (-0500)
Subject: nitg: runtime cast error shows types
X-Git-Tag: v0.6.4~51^2~10
X-Git-Url: http://nitlanguage.org

nitg: runtime cast error shows types

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

diff --git a/src/abstract_compiler.nit b/src/abstract_compiler.nit
index cdd1535..df82067 100644
--- a/src/abstract_compiler.nit
+++ b/src/abstract_compiler.nit
@@ -913,7 +913,9 @@ abstract class AbstractCompilerVisitor
 	do
 		var res = self.type_test(value, mtype, tag)
 		self.add("if (!{res}) \{")
-		self.add_abort("Cast failed")
+		var cn = self.class_name_string(value)
+		self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s`, got `%s`\", \"{mtype.to_s.escape_to_c}\", {cn});")
+		self.add_raw_abort
 		self.add("\}")
 	end