On 5.9.5+ PL_parser is always available, although not always a define, but a symbol.

diff --git a/Declare.xs b/Declare.xs
index 78177fb..ae5b164 100644 (file)
--- a/Declare.xs
+++ b/Declare.xs
@@ -25,7 +25,7 @@ static int in_declare = 0;
 
 #define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL)
 
-#ifdef PL_parser
+#if defined(PL_parser) || defined(PERL_5_9_PLUS)
 #define DD_HAVE_PARSER PL_parser
 #define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff)
 #define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK)