#define CvFILEGV(sv) (gv_fetchfile(CvFILE(sv)))
#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
# define CvDEPTH(sv) (*({const CV *_cv = (CV *)sv; \
#define CvFILEGV(sv) (gv_fetchfile(CvFILE(sv)))
#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
# define CvDEPTH(sv) (*({const CV *_cv = (CV *)sv; \