From man dlopen(3)
> According to the ISO C standard, casting between function
> pointers and 'void *', as done above, produces undefined results.
> POSIX.1-2001 and POSIX.1-2008 accepted this state of affairs and
> proposed the following workaround:
>
> *(void **) (&cosine) = dlsym(handle, "cos");
>
> This (clumsy) cast conforms with the ISO C standard and will
> avoid any compiler warnings.
>
> The 2013 Technical Corrigendum 1 to POSIX.1-2008 improved matters
> by requiring that conforming implementations support casting
> 'void *' to a function pointer. Nevertheless, some compilers
> (e.g., gcc with the '-pedantic' option) may complain about the
> cast used in this program.
Signed-off-by: Anhad Singh <andypython@protonmail.com>
Anhad Singh