gdb: Single stepping until exit from function

[liang tang]

Hi,
    Compiled the whole program in the centos with -g3 and gdb version
is 7.7 and gcc version is 4.7.2, single step prints gdb info:

*Single stepping until exit from function
_Z17fed_doclist_debugPKcS0_P11qfed_result,*
*which has no line number information.*

*0x00007f807fe5a892 in doclist_handler(evhtp_request_s*, void*) () from
/da1/fed/lib/libfed.so*

Thanks for help.