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bpo-39593: Adding an unit test of ctypes #18424

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Merged
vstinner merged 6 commits into from
Jun 1, 2020
Merged

bpo-39593: Adding an unit test of ctypes #18424

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7727b2d
Adding an unit test of ctypes
shihai1991 Feb 9, 2020
f013d98
Adding bpo info in code
shihai1991 Feb 10, 2020
ab1a72d
Merge remote-tracking branch 'origin/master' into bpo_39593
shihai1991 May 27, 2020
dfa4d1b
update struct_fields' case
shihai1991 May 27, 2020
fd6c06c
update desc in s_set()
shihai1991 May 28, 2020
bc3b678
Update Modules/_ctypes/cfield.c
shihai1991 May 28, 2020
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Adding bpo info in code
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@shihai1991
shihai1991 committed Feb 10, 2020
commit f013d98ddac940341376675817273f91847ac1f4
1 change: 1 addition & 0 deletions Modules/_ctypes/cfield.c
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Expand Up @@ -1294,6 +1294,7 @@ s_set(void *ptr, PyObject *value, Py_ssize_t length)
}

data = PyBytes_AS_STRING(value);
/* bpo-39593: XXX Why not Py_SIZE(value)? */
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@vstinner vstinner May 28, 2020

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I don't think that it's correct to add a test which indirectly specify the behavior and keep this comment which suggests to change the behavior.

I suggest to rewrite the comment to explain that we do use strlen() on purpose, rather than PyBytes_GET_SIZE() since we truncate characters after a null character on purpose. Keep the bpo number in the comment.

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@shihai1991 shihai1991 May 28, 2020

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Thanks, got it. I updated the description info, do you think it's clear enough?

size = strlen(data);
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if (size < length) {
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