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[3.15] gh-156939: Fix xmlcharrefreplace() buffer overflow (GH-157109) - #157232
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vstinner
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Sep 9, 2026
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LGTM
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Write into a temporary buffer to not write the trailing NUL byte
into the writer. Previously, the NUL byte was written outsize
the writer buffer.
(cherry picked from commit 9398655)
Co-authored-by: Victor Stinner vstinner@python.org