Debugged application crashes only when stepping with cdb

1. Open simple.pro from Creator's repository
2. Set a breakpoint at call to testStdSet() (simple_gdbtest_app.cpp, 2037)
3. Run in debugger. Wait until execution stops at breakpoint
   1. Step over. Everything works fine
   2. Step into testStdSet() and step over all function calls there. Debugged application crashes when stepping over return (line 1194)

Creator does not provide a stacktrace to where the crash happens.