[issue36027] Support negative exponents in pow() where a modulus is specified.

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

PR 13266 introduced a compiler warning.

Objects/longobject.c: In function ‘long_invmod’:
Objects/longobject.c:4246:25: warning: passing argument 2 of ‘long_compare’ from incompatible pointer type [-Wincompatible-pointer-types]
     if (long_compare(a, _PyLong_One)) {
                         ^~~~~~~~~~~
Objects/longobject.c:3057:1: note: expected ‘PyLongObject * {aka struct _longobject *}’ but argument is of type ‘PyObject * {aka struct _object *}’
 long_compare(PyLongObject *a, PyLongObject *b)
 ^~~~~~~~~~~~

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nosy: +serhiy.storchaka

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<https://bugs.python.org/issue36027>
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