is domain_error in both <stdexcept> & <vector>?

[therefore]

I'm using VS++ 2008 V9 with Vista 64 SP1.

#include <vector>

using std::domain_error;

int main()
{
	try
	{
		return 0;
	}
	catch (domain_error)
	{
		return 1;
	}
}

This compiles and works fine. In the actual project, I had neglected to add in

#include <stdexcept> 

but noticed that domain_error was usable (because of #include <vector>, apparently).

Is domain_error defined in vector also? Is it defined in all containers? Why use stdexcept besides convention?

[therefore]

Is it because <stdexcept> is included in <vector>? Probably so. Therefore, the idea is to always use <stdexcept> because you really don't know definitively if it is used in another template?

[jsmith]

You are right; <vector> is directly or indirectly including <stdexcept>.

Simply stated, you should not rely upon a header file including another header you need.
When using std::domain_error, you should include <stdexcept>.