Please check the code.
$ /usr/local/libexec/clang_delta --transformation=rename-var --counter=1 abc.c
Segmentation fault (core dumped)
$ cat abc.c
typedef struct gx_device_procs_s gx_device_procs;
struct gx_device_printer_s {
gx_device_procs *static_procs
};
gx_device_procs prn_bj10v_procs;
struct gx_device_printer_s gs_bj10v_device = {&prn_bj10v_procs}