Cannot see members of QNetworkRequest class in debug mode

I have wrote simpe console application that get web page by url in Qt 5.0.2
It work well.
Then I want to get the page that required the Basic authentification and got the error: "Page required Authentification".
I put break point in Qt Creator 2.7.0 to debug local variables.
The debugger stops and I click arrow before local variable request in "Locals and Expressions" window to see it's members.
I suppose to see Url and rawHeader members, but I see "d 0x... QNetworkRequest" string and nothing more.

I put breakpoint at line 21 of httpmanager.cpp.

Where is members of local variables?

I use Qt 5.0.2 on Ubuntu 12.04 64-bit on VirtualBox on Windows 7.
I use gcc 4.6.3
I use GNU gdb 7.4-2012.04 Copyright (C) 2012 Free Software Foundation, Inc.

I try to debug simple console pogram as c= a + b.
And in this program I can see values of a, b, c in debuger.