Message169452
This may be a bigger problem (grep for image_surface_get_data):
http://lists.cairographics.org/archives/cairo/2011-December/022563.html
The previous semantics for PyMemoryView_FromBuffer(view) were:
1) If non-NULL, steal the view.obj reference with automatic
decrement in PyBuffer_Release().
2) Copy shape and strides to view.smalltable.
The new semantics for PyMemoryView_FromBuffer(view) are:
1) If non-NULL, treat view.obj as a borrowed reference.
2) Rely on the fact that shape and strides won't disappear.
2) means that returning PyMemoryView_FromBuffer(view) from
a view allocated on the stack is no longer safe. In all instances
people could migrate to PyMemoryView_FromMemory(), which is
both safe and more convenient, but code may be broken.
PyManaged_Buffer is designed to expect buffers from exporters,
where it is guaranteed that the buffers won't disappear,so it
won't be easy to keep backwards compatibility. |
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Date |
User |
Action |
Args |
2012-08-30 13:39:04 | skrah | set | recipients:
+ skrah, ncoghlan, belopolsky, pitrou, docs@python |
2012-08-30 13:39:04 | skrah | set | messageid: <1346333944.53.0.237978097972.issue15821@psf.upfronthosting.co.za> |
2012-08-30 13:39:04 | skrah | link | issue15821 messages |
2012-08-30 13:39:03 | skrah | create | |
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