Segmentation fault when executing qtscript example script/qsdbg

Steps to reproduce:

• compile example script/qsdbg from qtscript module (I've used a shadow build)
• start the example by passing the provided example.js to it (tried to pass it when starting from the build dir by giving a relative path as well as starting from the location of example.js and starting qsdbg by using a relative path)

The example.js could be read without problems (proved by adding a qDebug() to print out the read code) but afterwards it crashes with a segmentation fault.