fc208ec1dfc58873b0b55786e418e51519eb388e
deleteTree did qDeleteAll(children) AND delete item, but ~TreeItem already frees children recursively (qDeleteAll(children)). The children were freed twice -> heap-use-after-free -> SIGSEGV exactly on app teardown, only visible when mail threads had real tree children (empty DB masked it). Reproduced under ASAN with seeded thread data: old code = heap-use-after-free exit 1; fixed code = clean exit 0. Reproducible, not guessed.
Wino Mail Qt (C++/DTK)
A modern C++/Qt port of Wino Mail for Deepin Linux using DTKWidget.
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Wino Mail v0.2.0
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