strengthen an invariant

vyperlang · Oct 1, 2024 · 04c7124 · 04c7124
1 parent 3813558
commit 04c7124
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/vyper/codegen/stmt.py b/vyper/codegen/stmt.py
@@ -214,9 +214,9 @@ def _parse_For_range(self):
                 raise TypeCheckFailure("unreachable: unchecked 0 bound")
 
             varname = self.stmt.target.target.id
-            i = IRnode.from_list(self.context.fresh_varname("range_ix"), typ=target_type)
-
             assert varname not in forvars
+
+            i = IRnode.from_list(self.context.fresh_varname("range_ix"), typ=target_type)
             self.context.forvars[varname] = i
 
             loop_body = ["seq"]