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.