When iam using any KDE CONTROLS IN qt application eg like KDatPicker it is showing segmentation fault during execution.

the error when analyzing the core dump using gdb is

0x42015574 in __libc_start_main () from /lib/tls/libc.so.6

The above error is shown in a form created using QT designer and KDE CONTROLS pasted in the respective form.The compilation is done using g++ with compilation
option -lkdecore -lkdeui

please help