X-Git-Url: http://nitlanguage.org

diff --git a/src/frontend/div_by_zero.nit b/src/frontend/div_by_zero.nit
index 4a8cfb4..16802c0 100644
--- a/src/frontend/div_by_zero.nit
+++ b/src/frontend/div_by_zero.nit
@@ -37,7 +37,8 @@ private class DivByZeroPhase
 	redef fun process_nmodule(nmodule)
 	do
 		# The AST node is not enough, we need also the associated model element
-		var mmodule = nmodule.mmodule.as(not null)
+		var mmodule = nmodule.mmodule
+		if mmodule == null then return
 		# For the specific job we have, the simpler it to launch a visitor on
 		# all elements of the AST.
 		var visitor = new DivByZeroVisitor(toolcontext, mmodule)
@@ -65,9 +66,9 @@ private class DivByZeroVisitor
 		# 1. We need a `/` operation
 		if not node isa ASlashExpr then return
 
-		# 2. The second operand must be a integer literal
+		# 2. The second operand must be an integer literal
 		var op2 = node.n_expr2
-		if not op2 isa AIntExpr then return
+		if not op2 isa AIntegerExpr then return
 
 		# 3. Its value must be 0
 		# Note: because of `literal_phase` the `value` method exists
@@ -79,6 +80,6 @@ private class DivByZeroVisitor
 		if not op1.mtype.is_subtype(mmodule, null, int_type) then return
 
 		# Error detected
-		toolcontext.error(node.location, "Error: Definitely division by zero")
+		toolcontext.warning(node.location, "div-by-zero", "Warning: division by zero.")
 	end
 end