-#ifdef DEBUGGING
-# define GvGP(gv) (*(assert(SvTYPE(gv) == SVt_PVGV || \
- SvTYPE(gv) == SVt_PVLV), \
- &(GvXPVGV(gv)->xgv_gp)))
+
+#if defined (DEBUGGING) && defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) && !defined(__INTEL_COMPILER)
+# define GvGP(gv) \
+ (*({GV *const _gvgp = (GV *) (gv); \
+ assert(SvTYPE(_gvgp) == SVt_PVGV || SvTYPE(_gvgp) == SVt_PVLV); \
+ assert(isGV_with_GP(_gvgp)); \
+ &((_gvgp)->sv_u.svu_gp);}))
+# define GvFLAGS(gv) \
+ (*({GV *const _gvflags = (GV *) (gv); \
+ assert(SvTYPE(_gvflags) == SVt_PVGV || SvTYPE(_gvflags) == SVt_PVLV); \
+ assert(isGV_with_GP(_gvflags)); \
+ &(GvXPVGV(_gvflags)->xpv_cur);}))
+# define GvSTASH(gv) \
+ (*({ GV * const _gvstash = (GV *) (gv); \
+ assert(isGV_with_GP(_gvstash)); \
+ assert(SvTYPE(_gvstash) == SVt_PVGV || SvTYPE(_gvstash) >= SVt_PVLV); \
+ &(GvXPVGV(_gvstash)->xnv_u.xgv_stash); \
+ }))
+# define GvNAME_HEK(gv) \
+ (*({ GV * const _gvname_hek = (GV *) (gv); \
+ assert(isGV_with_GP(_gvname_hek)); \
+ assert(SvTYPE(_gvname_hek) == SVt_PVGV || SvTYPE(_gvname_hek) >= SVt_PVLV); \
+ assert(!SvVALID(_gvname_hek)); \
+ &(GvXPVGV(_gvname_hek)->xiv_u.xivu_namehek); \
+ }))
+# define GvNAME_get(gv) ({ assert(GvNAME_HEK(gv)); (char *)HEK_KEY(GvNAME_HEK(gv)); })
+# define GvNAMELEN_get(gv) ({ assert(GvNAME_HEK(gv)); HEK_LEN(GvNAME_HEK(gv)); })