On 27/08/2024 04:03, Thiago Macieira wrote:
I also urge you to expand on the case of std::vector::operator[]. Are you proposing that it a) become non-noexcept, b) have its UB not defined by the boundary of the precondition, or c) have a precondition that cannot be turned into an exception?
It's not noexcept in the Standard; implementations just chose to make it so. Libstdc++ chose¹ to have always-terminating precondition enforcement, i.e. the checks never throw, and so doesn't operator[].
We can decide otherwise -- and that's orthogonal to if and when contracts actually land, as Marc says.
¹ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58338#c17 -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (France) S.A.S., a KDAB Group company Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com KDAB - Trusted Software Excellence
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