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Fix crash in SQL query results when stale editor positions are used - #4115
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mgrojo merged 3 commits intoOct 4, 2026
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The query_logger lambda is called via Qt::QueuedConnection, so editor content may have changed by the time it executes. This caused Scintilla assertion failures when from_position/to_position exceeded document length, or when line numbers were out of bounds after conversion. - Clamp from_position/to_position with qBound before use - Clamp line indices against actual line lengths before setErrorIndicator - Call finishExecution on early return when editor is empty - Guard line iteration loops with lines boundary check Fixes sqlitebrowser#4109.
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@rachavz sorry about the delay. Could you resolve the conflict? |
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mgrojo
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Oct 4, 2026
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Fixes #4109
Summary
Random crash when a cell with ordinary text is selected in the SQL query results table.
Root cause: The query_logger lambda in MainWindow.cpp captures the SQL editor state and is invoked via Qt::QueuedConnection. By the time it executes asynchronously, the editor content may have changed, making from_position/to_position stale. This triggers a Scintilla assertion failure in SCI_GETTEXTRANGE when positions are out of bounds.
Fix:
Testing