New submission from Sebastian Ernst <[email protected]>:
A c-function with the following signature ...
```C
int16_t __stdcall __declspec(dllimport) square_int(
int16_t a
);
```
... is being called with ctypes:
```python
def test_error_callargs_unconfigured_too_many_args():
dll = ctypes.windll.LoadLibrary('tests/demo_dll.dll')
square_int = dll.square_int
with pytest.raises(ValueError):
a = square_int(1, 2, 3)
```
Expected result: If the function is called with too many (positional) arguments
(in the example 3 instead of 1), a `ValueError` should be raised. This is the
case for at least CPython 3.4 to 3.7.
Actual result: "Nothing", i.e. no exception. The described test "fails". The
function is called without an error - with CPython 3.8.0b4.
If this behavior is intended, is has not been (as far as I can tell) documented.
----------
components: ctypes
messages: 353021
nosy: smernst
priority: normal
severity: normal
status: open
title: ctypes ignores when a DLL function is called with too many arguments
type: behavior
versions: Python 3.8
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue38258>
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