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Rossi(Ruoxi) Sun authored and GitHub committed 1dc3b81875d
GH-39583: [C++] Fix the issue of ExecBatchBuilder when appending consecutive tail rows with the same id may exceed buffer boundary (for fixed size types) (#39585) ### Rationale for this change #39583 is a subsequent issue of #32570 (fixed by #39234). The last issue and fixed only resolved var length types. It turns out fixed size types have the same issue. ### What changes are included in this PR? Do the same fix of #39234 for fixed size types. ### Are these changes tested? UT included. ### Are there any user-facing changes? * Closes: #39583 Authored-by: zanmato1984 <zanmato1984@gmail.com> Signed-off-by: Antoine Pitrou <antoine@python.org>