C++/libstdc++: new "statement with no effect" warnings

[Jakub Jelinek]

On Fri, Jan 04, 2002 at 04:08:04PM +0100, Gerald Pfeifer wrote:
> Today (or very recently) I started getting a warning
>   x.cc:10: warning: statement with no effect
> for the following code when compiling with -Wall:
> 
>   1 #include <vector>
>   2
>   3 using namespace std;
>   4
>   5 typedef unsigned U;
>   6 typedef vector<unsigned> V;
>   7
>   8 int main() {
>   9  U *u = new U[43];
>  10  V *v = new V[43]; // warning: statement with no effect
>  11
>  12  delete[] u;
>  13  delete[] v;
>  14  }
> 
> What's the problem here?

See http://gcc.gnu.org/ml/gcc-patches/2002-01/msg00251.html

	Jakub