new temps bug on indexing deletion

Cython/Compiler/ExprNodes.py

@@ -1925,6 +1925,7 @@ class IndexNode(ExprNode):
                 self.index_unsigned_parameter(),
                 code.error_goto(self.pos)))
         self.generate_subexpr_disposal_code(code)
+        self.free_subexpr_temps(code)
 
     def buffer_lookup_code(self, code):
         # Assign indices to temps

tests/run/delete.pyx

+"""
+>>> a = A()
+>>> a.f()
+[2, 1]
+>>> a.g()
+(False, True)
+"""
+
+class A:
+    def f(self):
+        self.refs = [3,2,1]
+        del self.refs[0]
+        return self.refs
+
+    def g(self):
+        self.a = 3
+        del self.a
+        return (hasattr(self, "a"), hasattr(self, "g"))