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neilmacintosh avatar neilmacintosh commented on May 14, 2024

I suspect you have misunderstood the implementation. The library only throws exceptions if configured to do so for testing (and ONLY for testing according to the design).

When used normally, it "fails fast" (i.e. calls std::terminate()) if a precondition, postcondition or invariant is violated.

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rodiers avatar rodiers commented on May 14, 2024

My point is actually that I want to be able to specify the behavior in some way. For example I might want to have the behavior of assert and not directly terminate.

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tamaskenez avatar tamaskenez commented on May 14, 2024

Reading the specification of std::assert and std::terminate suggests they are doing the same thing: Provided #ifndef NDEBUG and the default terminate handler is active, they both call std::abort
The only difference is the diagnostics sent to stderr.

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rodiers avatar rodiers commented on May 14, 2024

@tamaskenez Yes, the diagnostics are a big difference. It is also a semantical difference.
Anyway once (if?) we'll have contracts (http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2015/n4415.pdf), I guess that this library will implement that mechanism...

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tamaskenez avatar tamaskenez commented on May 14, 2024

You're right, my homebrew implementation of the fail_fast_assert concept is also more like an NDEBUG-independent assert.

*fail_fast_assert could issue some assert-like diagnostics before calling std::terminate

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