Fix genexpr inside comprehension, ticket #715

Cython/Compiler/ExprNodes.py

@@ -4554,7 +4554,7 @@ class ScopedExprNode(ExprNode):
 
 class ComprehensionNode(ScopedExprNode):
     subexprs = ["target"]
-    child_attrs = ["loop", "append"]
+    child_attrs = ["loop"]
 
     def infer_type(self, env):
         return self.target.infer_type(env)

Cython/Compiler/Symtab.py

@@ -1512,6 +1512,10 @@ class GeneratorExpressionScope(Scope):
         self.entries[name] = entry
         return entry
 
+    def declare_pyfunction(self, name, pos, allow_redefine=False):
+        return self.outer_scope.declare_pyfunction(
+            name, pos, allow_redefine)
+
     def declare_lambda_function(self, func_cname, pos):
         return self.outer_scope.declare_lambda_function(func_cname, pos)
 

tests/run/genexpr_T715.pyx

+# mode: run
+# ticket: 715
+# tags: genexpr, comprehension
+
+def t715(*items):
+    """
+    # Blocked by T724
+    # >>> [list(i) for i in t715([1, 2, 3], [4, 5, 6])]
+    # [[1, 2, 3], [4, 5, 6]]
+    >>> [list(i) for i in t715([1, 2, 3])]
+    [[1, 2, 3]]
+    """
+    return [(j for j in i) for i in items]