From 04ff073f4b6c9f7c5b178bb492893b4dd5053b6c Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Tue, 25 Sep 2012 03:51:14 -0500
Subject: fix regen_perly.pl for bison 2.6

---
 regen_perly.pl | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'regen_perly.pl')

diff --git a/regen_perly.pl b/regen_perly.pl
index 124b031edb..a49e30e13f 100644
--- a/regen_perly.pl
+++ b/regen_perly.pl
@@ -73,7 +73,7 @@ unless ($version) { die <<EOF; }
 Could not find a version of bison in your path. Please install bison.
 EOF
 
-unless ($version =~ /\b(1\.875[a-z]?|2\.[01345])\b/) { die <<EOF; }
+unless ($version =~ /\b(1\.875[a-z]?|2\.[013456])\b/) { die <<EOF; }
 
 You have the wrong version of bison in your path; currently 1.875
 2.0, 2.1, 2.3, 2.4 or 2.5 is required.  Try installing
@@ -116,9 +116,13 @@ open my $tmph_fh, '<', $tmph_file or die "Can't open $tmph_file: $!\n";
 
 my $endcore_done = 0;
 # Token macros need to be generated manually from bison 2.4 on
-my $gather_tokens = ($version =~ /\b2\.[45]\b/ ? undef : 0);
+my $gather_tokens = ($version =~ /\b2\.[456]\b/ ? undef : 0);
 my $tokens;
 while (<$tmph_fh>) {
+    # bison 2.6 adds header guards, which break things because of where we
+    # insert #ifdef PERL_CORE, so strip them because they aren't important
+    next if /YY_PERLYTMP_H/;
+
     print $h_fh "#ifdef PERL_CORE\n" if $. == 1;
     if (!$endcore_done and /YYSTYPE_IS_DECLARED/) {
 	print $h_fh <<h;
@@ -302,7 +306,7 @@ sub make_type_tab {
 		{ "toketype_" .
 		    (defined $tokens{$1} ? $tokens{$1} : $default_token)
 		}ge;
-    $fields =~ s/, \s* 0 \s* $//x
+    $fields =~ s/, \s* (?:0|YY_NULL) \s* $//x
 	or die "make_type_tab: couldn't delete trailing ',0'\n";
 
     return 
-- 
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