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Add EvalErrorBuilder::panic()

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An nicer alternative to printError + abort, or assert(false /* foo */)
This commit is contained in:
Robert Hensing 2024-07-11 11:35:58 +02:00
parent 13522229a9
commit 61577402ba
2 changed files with 14 additions and 0 deletions
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8
src/libexpr/eval-error.cc
View file

@ -92,6 +92,14 @@ void EvalErrorBuilder<T>::debugThrow()
throw error;
}
template<class T>
void EvalErrorBuilder<T>::panic()
{
logError(error.info());
printError("This is a bug! An unexpected condition occurred, causing the Nix evaluator to have to stop. If you could share a reproducible example or a core dump, please open an issue at https://github.com/NixOS/nix/issues");
abort();
}
template class EvalErrorBuilder<EvalBaseError>;
template class EvalErrorBuilder<EvalError>;
template class EvalErrorBuilder<AssertionError>;

6
src/libexpr/eval-error.hh
View file

@ -112,6 +112,12 @@ public:
* Delete the `EvalErrorBuilder` and throw the underlying exception.
*/
[[gnu::noinline, gnu::noreturn]] void debugThrow();
/**
* A programming error or fatal condition occurred. Abort the process for core dump and debugging.
* This does not print a proper backtrace, because unwinding the stack is destructive.
*/
[[gnu::noinline, gnu::noreturn]] void panic();
};
}