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gh-64490: Fix bugs in argument clinic varargs processing (#32092)

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colorfulappl 2022-11-25 03:56:50 +08:00 • committed by GitHub
parent 351842b46a
commit 0da728387c
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11 changed files with 612 additions and 11 deletions
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20
Python/getargs.c
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@ -2598,7 +2598,25 @@ _PyArg_UnpackKeywordsWithVararg(PyObject *const *args, Py_ssize_t nargs,
current_arg = NULL;
}
buf[i + vararg + 1] = current_arg;
/* If an arguments is passed in as a keyword argument,
* it should be placed before `buf[vararg]`.
*
* For example:
* def f(a, /, b, *args):
* pass
* f(1, b=2)
*
* This `buf` array should be: [1, 2, NULL].
* In this case, nargs < vararg.
*
* Otherwise, we leave a place at `buf[vararg]` for vararg tuple
* so the index is `i + 1`. */
if (nargs < vararg) {
buf[i] = current_arg;
}
else {
buf[i + 1] = current_arg;
}
if (current_arg) {
--nkwargs;