Can i use FDL-licensed qt example source code in a GPL program?

[tarbos]

Hi,

I am developing a program that i would like to release under the GPL v3. In search for a way to use unix signals in qt i have come across code, posted at http://doc-snapshot.qt-project.org/qt5-nosubdir/unix-signals.html . This does exactly what i need in my application, however it is licensed under the FDL. As far as i know, there seems to be some uncertainity about using FDL code in GPL programms.

Now my questions are:
Is it ok for me to use that code (mostly unmodified) and release it under the GPL with the rest of my program?
If not: can i release the rest as GPL, and still use that code (as FDL), and in that case: how should the program header (with the license information) look?