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The C++ standard for the F-35 Fighter Jet [video]

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327 points AareyBaba | 1 comments | 07 Dec 25 18:07 UTC | HN request time: 0.326s | source
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time4tea ◴[07 Dec 25 19:31 UTC] No.46184345[source]▶
a = a; // misra

Actual code i have seen with my own eyes. (Not in F-35 code)

Its a way to avoid removing an unused parameter from a method. Unused parameters are disallowed, but this is fine?

I am sceptical that these coding standards make for good code!

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msla ◴[07 Dec 25 19:41 UTC] No.46184442[source]▶
Especially since there is a widely recognized way to ignore a parameter:

    (void) a;
Every C programmer beyond weaning knows that.
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time4tea ◴[07 Dec 25 20:14 UTC] No.46184723[source]▶
The point really was that the unused method parameter should in almost all cases be removed, not that some trick should be used to make it seem used, and this is the wrong trick!
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1. addaon ◴[07 Dec 25 21:13 UTC] No.46185208[source]▶
Sometimes. But sometimes you have a set of functions that are called through function pointers that need the same signature, and one or more of them ignore some of the arguments. These days I’d spell that __attribute__((unused)); but it’s a perfectly reasonable case.