SDR               987 vm_dump.c      	SDR();
SDR              1197 vm_eval.c      	    SDR(); fprintf(stderr, "%p, %p\n", cfp, escape_cfp);
SDR               151 vm_exec.h        SDR(); \
SDR               204 vm_insnhelper.c 	SDR();
SDR               216 vm_insnhelper.c 	SDR();