Thanks a lot, that's exactly what I've been looking for. On 28 May 2015 at 06:27, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > On 27 May 2015 at 20:29, Eduardo Piombino wrote: >> Hi. >> >> I'm currently using __builtin_types_compatible_p basically for >> determining if the passed value is an array in the following manner: >> >> #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) >> #define __is_array(a) (__same_type((a), &(a)[0]) == 0) >> >> This way the __is_array() tells me if im dealing with an array or a >> bare pointer: >> >> char dest[10]; >> char * p; >> >> __is_array(dest) would evaluate to 1, while __is_array(p) would >> evaluate to 0, allowing me to raise a warning or an assert at compile >> time. > > You don't need any bultins for C++: > > static_assert( std::is_array<decltype(dest)>::value, "dest is an array" ); > static_assert( !std::is_array<decltype(p)>::value, "p is not an array" );
