branch-4.1: [fix](be) Guard empty stack trace formatting #65731#65743
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branch-4.1: [fix](be) Guard empty stack trace formatting #65731#65743github-actions[bot] wants to merge 1 commit into
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An empty or too-short libunwind stack trace underflows the remaining-frame count in `StackTrace::toString()` after it skips its internal frames. Formatting an error `Status` then reads beyond the fixed frame array and can crash the BE. Treat non-positive stack-capture results as empty, render a trace with fewer frames than the requested skip as the existing `<Empty trace>`, and preserve signal-context offsets after slicing. A debug-point BEUT injects an empty trace into the real `Status::NotFound` capture/logging path.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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run buildall |
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BE Regression && UT Coverage ReportIncrement line coverage Increment coverage report
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Cherry-picked from #65731