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PE's block module: Use sip.voidptr's ascapsule() instead of __int__() to retrieve its pointer.

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It caused crashes under 32 bits when pointers would flip our long's most significant bit. (Well, at least that's what I think was going on).
This commit is contained in:
Virgil Dupras 2012-06-06 17:18:53 -04:00
parent 392a802ef1
commit 64baf2a10c
1 changed files with 4 additions and 5 deletions
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9
qt/pe/modules/block.c
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@ -35,7 +35,7 @@ getblock(PyObject *image, int width, int height)
red = green = blue = 0;
pixel_count = width * height;
if (pixel_count) {
PyObject *sipptr, *pi;
PyObject *sipptr, *bits_capsule, *pi;
char *s;
int i;
@ -44,11 +44,10 @@ getblock(PyObject *image, int width, int height)
Py_DECREF(pi);
sipptr = PyObject_CallMethod(image, "bits", NULL);
/* int(sipptr) returns the address of the pointer */
pi = PyObject_CallMethod(sipptr, "__int__", NULL);
bits_capsule = PyObject_CallMethod(sipptr, "ascapsule", NULL);
Py_DECREF(sipptr);
s = (char *)PyLong_AsLong(pi);
Py_DECREF(pi);
s = (char *)PyCapsule_GetPointer(bits_capsule, NULL);
Py_DECREF(bits_capsule);
/* Qt aligns all its lines on 32bit, which means that if the number of bytes per
* line for image is not divisible by 4, there's going to be crap inserted in "s"
* We have to take this into account when calculating offsets