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Fix dereferencing potential null pointer #5108

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merged 2 commits into from Dec 21, 2020
Merged

Fix dereferencing potential null pointer #5108

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7673cb7
Fix dereferencing potential null pointer
cgohlke Dec 19, 2020
d1e706d
return ImagingError_MemoryError
cgohlke Dec 20, 2020
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4 changes: 4 additions & 0 deletions src/_imaging.c
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Expand Up @@ -3180,6 +3180,10 @@ _draw_polygon(ImagingDrawObject* self, PyObject* args)

/* Copy list of vertices to array */
ixy = (int*) calloc(n, 2 * sizeof(int));
if (ixy == NULL) {
free(xy);
return NULL;
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}

for (i = 0; i < n; i++) {
ixy[i+i] = (int) xy[i+i];
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