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[3.15] gh-160324: Keep io.StringIO state after MemoryError (GH-160325) - #161041
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…GH-160325) Allocate before consuming the accumulated writes in realize() and make_intermediate(), and reset the size when the contents are lost, so that later calls do not index outside the internal buffer. Shrink the buffer of the accumulating writer before finishing it, so that getvalue(), read() and the other methods leave the contents unchanged when they fail with MemoryError instead of dropping them. ANT-2026-MPHGX2FL (cherry picked from commit 83b047ef80836c24672cf3e2e807e68efed7d495) Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com>
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Allocate before consuming the accumulated writes in realize() and
make_intermediate(), and reset the size when the contents are lost,
so that later calls do not index outside the internal buffer.
Shrink the buffer of the accumulating writer before finishing it, so
that getvalue(), read() and the other methods leave the contents
unchanged when they fail with MemoryError instead of dropping them.
ANT-2026-MPHGX2FL
(cherry picked from commit 83b047e)
Co-authored-by: Gregory P. Smith 68491+gpshead@users.noreply.github.com
io.StringIOcrashes or returns garbage when used after aMemoryError#160324