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GDB (GNU Debugger) is an open-source command-line debugger for C, C++, Rust and other languages, used to step through programs and inspect core dumps.
Claude Code compared gcore snapshots taken 30 minutes apart and flagged a native C cache whose entry count never dropped, a lead QA engineer wrote. The method fits servers too loaded to instrument live, since it works from frozen snapshots of the process.
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GDB 18.1 adds every type symbol to .gdb_index to fix failed type lookups, and its notes say existing indexes should be regenerated. Teams that pin the debugger in CI should rebuild those indexes with it and retest any script that parses Windows paths.
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Full and empty share a residue once the cursors lap, so a four-slot ring reports empty with four live ints in it, and the sanitizers have nothing to say because nothing illegal happened.
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The Rust compiler team's first debugging survey found that 46% of respondents use a debugger, and the reasons given are about legibility rather than taste, with 74% reporting poor value rendering and 55% unable to reliably inspect a variable.
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JetBrains has pointed the next four months of CLion at embedded and agentic debugging, with the debugger config itself becoming a JSON file you can edit by hand, hand to an agent, or import from VS Code.
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