problem in User-Space Probing

[ch huang]

i write a test function ,

#include <stdio.h>

static void my_out(void)
{
        printf("just a test\n");
}
main()
{
        printf("befor function\n");
        my_out();
        printf("after function\n");
}

and compile it
gcc -g -gdwarf-2 -g3  test.c  -o test

then write stap script

probe process("/root/test").function("my_out"){
printf("i in %s\n",pp())
}
probe process("/root/test").function("my_out").return{
printf("back from %s\n",probefunc())
}
when i run this script i find some warning information

# stap exec.stp
/usr/local/share/systemtap/runtime/uprobes/uprobes.c: In function
‘uprobe_report_exec’:
/usr/local/share/systemtap/runtime/uprobes/uprobes.c:2401: warning:
‘uproc’ may be used uninitialized in this function
/usr/local/share/systemtap/runtime/uprobes/uprobes.c: In function
‘uprobe_report_exit’:
/usr/local/share/systemtap/runtime/uprobes/uprobes.c:2101: warning:
‘uproc’ may be used uninitialized in this function
i in process("/root/test").function("my_out@/root/test.c:4")
back from my_out

it seems script works fine ,but i do not know the warning info,is
there something i missed?