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average c++ dev (programming.dev)
submitted 1 year ago by to c/programmer_humor@programming.dev
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I don't think that casting a range of bits as some other arbitrary type "is a bug nobody sees coming".

C++ compilers also warn you that this is likely an issue and will fail to compile if configured to do so. But it will let you do it if you really want to.

That's why I love C++

a screenshot from linkedin reading "I don't think that casting a range of bits as some other arbitrary type "is a bug nobody sees coming". C++ compilers also warn you that this is likely an issue and will fail to compile if configured to do so. But it will *let you do it* if you really want to. That's why I love C++"
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[–] 32 points 1 year ago (1 child)

My issue is C++ will "let me do it", and by that I mean "you didn't cast here (which is UB), so I will optimize out a null check later, and then segfault in a random location"

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  • [–] 5 points 1 year ago*

    Always check your programs on -O0 or pay the price

    Shit gets really fun when you find out your code is a edge case for compiler optimization and should never be optimized away (although this is very very rare for -O2)

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