std vector, QVector and fields..

[JonB]

@jsulm
Oh yes I am! In @J-Hilk's code (at least originally) his main() calls fibonacci(10), so assume that, and then tell me what happens while I sit waiting for the compilation to finish?

And it would not hang if you would call it with any number as parameter. It could probably slow down compilation if you would pass a huge number :-)

I think you should look at the code again... :)

[jsulm]

@JonB OK, I see n > 0. You should try :-)

[J.Hilk]

@JonB Add at least a function call to your calculation, then you get an stack overflow(eventually)

[JonB]

@jsulm

You should try :-)

I'm terrified of seizing up my Linux VM :) It already does that if I accidentally debug from Creator when inside a QComboBox clicked slot, and I have to hard-switch-off the whole VM... :(

[J.Hilk]

@JonB

main.cpp:158:18: error: expression is not an integral constant expression
main.cpp:152:13: note: constexpr evaluation hit maximum step limit; possible infinite loop?
main.cpp:158:18: note: in call to 'fibonacci(25)'

smart things these compilers

[JonB]

@J-Hilk said in std vector, QVector and fields..:

@JonB Add at least a function call to your calculation, then you get an stack overflow(eventually)

But I don't want a stackoverflow to terminate! I want to know whether the compiler sits there forever! Which is why I wrote as I did.

OK, I'm off to try....

[JonB]

@J-Hilk said in std vector, QVector and fields..:

note: constexpr evaluation hit maximum step limit; possible infinite loop?

Ah ha! So..... this C++ constexpr has what "maximum step limit`? Where is that in the spec? :)

[J.Hilk]

@JonB up to you with the compiler option -fconstexpr-steps

[JonB]

@J-Hilk
Wow! They think of everything! I wonder if that would accept -fconstexpr-steps fibonacci(25) ;-)

OK, enough now, thanks!