Is it possible to determine if a structure is non-POD?

[hovik]

Is there a way to determine at run-time (or maybe at compile-time)
that a given class is a POD structure or it has a constructor, without
generating compiler errors?

Let's say I have a template T that takes class X as an argument, and I
want to have a clear test that tells me if X is POD or not.

Thanks,

 

[=?ISO-8859-1?Q?Erik_Wikstr=F6m?=]

Is there a way to determine at run-time (or maybe at compile-time)
that a given class is a POD structure or it has a constructor, without
generating compiler errors?

Let's say I have a template T that takes class X as an argument, and I
want to have a clear test that tells me if X is POD or not.

There's something like that in Boost, search for is_pod.

 

[John Harrison]

There's something like that in Boost, search for is_pod.

Unfortunate boost::is_pod doesn't work. To quote from the boost
documentation

Without some (as yet unspecified) help from the compiler, is_pod will
never report that a class or struct is a POD; this is always safe, if
possibly sub-optimal. Currently (May 2005) only MWCW 9 and Visual C++ 8
have the necessary compiler-intrinsics.

For 'sub-optimal' read 'doesn't work'.