#define CvFILEGV(sv) ((XPVCV*)SvANY(sv))->xcv_filegv
#define CvDEPTH(sv) ((XPVCV*)SvANY(sv))->xcv_depth
#define CvPADLIST(sv) ((XPVCV*)SvANY(sv))->xcv_padlist
#define CvFILEGV(sv) ((XPVCV*)SvANY(sv))->xcv_filegv
#define CvDEPTH(sv) ((XPVCV*)SvANY(sv))->xcv_depth
#define CvPADLIST(sv) ((XPVCV*)SvANY(sv))->xcv_padlist