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bpo-40052: Fix alignment issue in PyVectorcall_Function() (GH-23999)
``` In file included from /usr/include/python3.8/Python.h:147: In file included from /usr/include/python3.8/abstract.h:837: /usr/include/python3.8/cpython/abstract.h:91:11: error: cast from 'char *' to 'vectorcallfunc *' (aka 'struct _object *(**)(struct _object *, struct _object *const *, unsigned long, struct _object *)') increases required alignment from 1 to 8 [-Werror,-Wcast-align] ptr = (vectorcallfunc*)(((char *)callable) + offset); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. ``` Co-Authored-By: Andreas Schneider <asn@cryptomilk.org> Co-Authored-By: Antoine Pitrou <antoine@python.org>
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3 changed files with 7 additions and 4 deletions
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@ -63,7 +63,7 @@ PyVectorcall_Function(PyObject *callable)
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{
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PyTypeObject *tp;
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Py_ssize_t offset;
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vectorcallfunc *ptr;
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vectorcallfunc ptr;
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assert(callable != NULL);
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tp = Py_TYPE(callable);
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@ -73,8 +73,8 @@ PyVectorcall_Function(PyObject *callable)
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assert(PyCallable_Check(callable));
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offset = tp->tp_vectorcall_offset;
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assert(offset > 0);
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ptr = (vectorcallfunc *)(((char *)callable) + offset);
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return *ptr;
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memcpy(&ptr, (char *) callable + offset, sizeof(ptr));
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return ptr;
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}
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/* Call the callable object 'callable' with the "vectorcall" calling
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