#if defined(HAS_VSNPRINTF) && defined(HAS_C99_VARIADIC_MACROS) && !(defined(DEBUGGING) && !defined(PERL_USE_GCC_BRACE_GROUPS)) && !defined(PERL_GCC_PEDANTIC)
# ifdef PERL_USE_GCC_BRACE_GROUPS
-# define my_vsnprintf(buffer, len, ...) ({ int __len__ = vsnprintf(buffer, len, __VA_ARGS__); if ((len) > 0 && (Size_t)__len__ >= (len)) Perl_croak_nocontext("panic: vsnprintf buffer overflow"); __len__; })
+# define my_vsnprintf(buffer, len, ...) ({ int __len__ = vsnprintf(buffer, len, __VA_ARGS__); if ((len) > 0 && (Size_t)__len__ >= (Size_t)(len)) Perl_croak_nocontext("panic: vsnprintf buffer overflow"); __len__; })
# define PERL_MY_VSNPRINTF_GUARDED
# else
# define my_vsnprintf(buffer, len, ...) vsnprintf(buffer, len, __VA_ARGS__)
/* Set up PERLVAR macros for populating structs */
# define PERLVAR(prefix,var,type) type prefix##var;
+
+/* 'var' is an array of length 'n' */
# define PERLVARA(prefix,var,n,type) type prefix##var[n];
+
+/* initialize 'var' to init' */
# define PERLVARI(prefix,var,type,init) type prefix##var;
+
+/* like PERLVARI, but make 'var' a const */
# define PERLVARIC(prefix,var,type,init) type prefix##var;
struct interpreter {