[3.13] gh-77894: Fix a crash when the GC breaks a loop containing a memoryview (GH-123898) #123936
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…moryview (pythonGH-123898) Now a memoryview object can only be cleared if there are no buffers that refer it. (cherry picked from commit a1dbf2e) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This was referenced Sep 11, 2024
rruuaanng
reviewed
Sep 15, 2024
| return 0; | ||
| self->flags |= _Py_MEMORYVIEW_RELEASED; | ||
| assert(self->mbuf->exports > 0); | ||
| if (--self->mbuf->exports == 0) { |
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Maybe changing if (--self->mbuf->exports == 0) to
self->mbuf->exports -= 1; // or self->mbuf->exports--;
if (self->mbuf->exports == 0)
...
will be more readable, that my idea.
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I personally think that --self->mbuf->exports is a bit confusing.
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This was in the old code.
If you want to change this code, create a PR for the main branch. The backported code should not differ from the original code without good reasons.
serhiy-storchaka
approved these changes
Sep 24, 2024
| return 0; | ||
| self->flags |= _Py_MEMORYVIEW_RELEASED; | ||
| assert(self->mbuf->exports > 0); | ||
| if (--self->mbuf->exports == 0) { |
There was a problem hiding this comment.
This was in the old code.
If you want to change this code, create a PR for the main branch. The backported code should not differ from the original code without good reasons.
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Now a memoryview object can only be cleared if there are no buffers
that refer it.
(cherry picked from commit a1dbf2e)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com