Lightning Talk: Enhancing C++ exceptions with Context
summary
Claims a lightweight Class Context that attaches rich diagnostic data without changing exception types and with minimal happy-path overhead. Implementation uses a one-line instantiation at scope entry whose constructor captures relevant variables and a thread-local collector that records those context objects only when an exception unwinds. Works with standard exceptions, avoids stack-trace fragility, and powers postcatch dumps. Prototype is part of a microthreading library called f and comes from ideas salvaged from an abandoned language project.
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