fix raw log; add test

tests/functional/codegen/features/test_logging.py

@@ -1254,6 +1254,22 @@ def foo():
     assert log.topics == [event_id, topic1, topic2, topic3]
 
 
+valid_list = [
+    """
+topic: constant(bytes32) = 0x1212121212121210212801291212121212121210121212121212121212121212
+
+@external
+def foo():
+    raw_log([[topic]][0], b'')
+    """
+]
+
+
+@pytest.mark.parametrize("code", valid_list)
+def test_raw_log_pass(code):
+    assert compile_code(code) is not None
+
+
 fail_list = [
     (
         """

vyper/builtins/functions.py

@@ -1257,7 +1257,8 @@ def fetch_call_return(self, node):
     def infer_arg_types(self, node, expected_return_typ=None):
         self._validate_arg_types(node)
 
-        if not isinstance(node.args[0], vy_ast.List) or len(node.args[0].elements) > 4:
+        arg = node.args[0].reduced()
+        if not isinstance(arg, vy_ast.List) or len(arg.elements) > 4:
             raise InvalidType("Expecting a list of 0-4 topics as first argument", node.args[0])
 
         # return a concrete type for `data`
@@ -1269,7 +1270,7 @@ def infer_arg_types(self, node, expected_return_typ=None):
     def build_IR(self, expr, args, kwargs, context):
         context.check_is_not_constant(f"use {self._id}", expr)
 
-        topics_length = len(expr.args[0].elements)
+        topics_length = len(expr.args[0].reduced().elements)
         topics = args[0].args
         topics = [unwrap_location(topic) for topic in topics]