Should the -w flag also halt on ddoc warnings?

[Gary Willoughby]

import std.stdio;

/**
 * The main entry point.
 *
 * Params:
 *     x = command line args.
 */
void main(string[] args)
{
        writeln("hello");
}
Compile with: rdmd -D -w test.d

Output:

test.d(9): Warning: Ddoc: function declaration has no parameter 
'x'
test.d(9): Warning: Ddoc: function declaration has no parameter 
'x'
hello

Using the -w flag, compilation halts on warnings but for ddoc 
warnings it doesn't. Is this intended behaviour because i find it 
confusing and inconsistent.