Nonsense struct output with inline returns

[NoahZinsmeister]

Version Information

• vyper Version (output of vyper --version): 0.1.0b10
• OS: osx
• Python Version (output of python --version): Python 3.7.2
• Environment (output of pip freeze):

eth-tester==0.1.0b39
py-evm==0.2.0a42
pytest==5.0.1
vyper==0.1.0b10
web3==5.0.0b2

What's your issue about?

When @public functions which return structs are returned inline from other @public functions, the output is nonsense values.

In the following code, wrap_get_my_struct_WORKING returns the correct data, whereas wrap_get_my_struct_BROKEN returns nonsense.

struct MyStruct:
    e1: decimal
    e2: timestamp


# @dev Construct a MyStruct.
@public
@constant
def get_my_struct(_e1: decimal, _e2: timestamp) -> MyStruct:
    return MyStruct({e1: _e1, e2: _e2})
 

# @dev Wrap self.get_my_struct.
@public
@constant
def wrap_get_my_struct_WORKING(_e1: decimal) -> MyStruct:
    testing: MyStruct = self.get_my_struct(_e1, block.timestamp)
    return testing

# @dev Wrap self.get_my_struct.
@public
@constant
def wrap_get_my_struct_BROKEN(_e1: decimal) -> MyStruct:
    return self.get_my_struct(_e1, block.timestamp)