model: fatal error, instead of abort if more that one primitive class

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

diff --git a/src/model/model.nit b/src/model/model.nit
index bebfa5c..47b0117 100644 (file)
--- a/src/model/model.nit
+++ b/src/model/model.nit
@@ -223,7 +223,12 @@ redef class MModule
                        print("Fatal Error: no primitive class {name}")
                        exit(1)
                end
-               assert cla.length == 1 else print cla.join(", ")
+               if cla.length != 1 then
+                       var msg = "Fatal Error: more than one primitive class {name}:"
+                       for c in cla do msg += " {c.full_name}"
+                       print msg
+                       exit(1)
+               end
                return cla.first
        end