the start pos (so s/.\G// would fail
on second iteration */
-#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+#if defined(PERL_USE_GCC_BRACE_GROUPS)
# define ReREFCNT_inc(re) \
({ \
/* This is here to generate a casting warning if incorrect. */ \