Dan Eble <d...@faithful.be> writes:
> g++ 8 is spamming my build log with messages like this:
>
> /root/lilypond-src/lily/include/smobs.hh:228:37:
> warning: cast between incompatible function types
> from 'scm_unused_struct* (*)(SCM, SCM, SCM, SCM)’
> {aka 'scm_unused_struct* (*)(scm_unused_struct*,
> scm_unused_struct*, scm_unused_struct*, scm_unused_struct*)’}
> to 'scm_t_subr' {aka 'scm_unused_struct* (*)()’}
> [-Wcast-function-type]
> (scm_t_subr)smob_trampoline<PMF>,
> ^~~~~~~~~~~~~~~~~~~~
>
> The issue seems to be the differing number of parameters.
> https://stackoverflow.com/q/559581
> https://stackoverflow.com/q/188839
>
> Do you see anything worth doing about it at this time? I could possibly
> bring myself to ignore it, if you would recommend that.
I think that the cast is there in order to match a function's argument
type. Clearly it's the fault of the Guile function in question to
receive arguments of a type that's different from how it calls it.
So we probably need to crank out a reinterpret_cast here.
--
David Kastrup
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