Support Bison version 3.1 through 3.4

No significant changes in the generated code since 3.0.

perly.h

@@ -4,14 +4,15 @@
    Any changes made here will be lost!
  */
 
-#define PERL_BISON_VERSION  30000
+#define PERL_BISON_VERSION  30004
 
 #ifdef PERL_CORE
-/* A Bison parser, made by GNU Bison 3.0.4.  */
+/* A Bison parser, made by GNU Bison 3.4.1.  */
 
 /* Bison interface for Yacc-like parsers in C
 
-   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software Foundation,
+   Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -39,6 +40,9 @@
    This special exception was added by the Free Software Foundation in
    version 2.2 of Bison.  */
 
+/* Undocumented macros, especially those whose name start with YY_,
+   are private implementation details.  Do not rely on them.  */
+
 /* Debug traces.  */
 #ifndef YYDEBUG
 # define YYDEBUG 0
@@ -165,7 +169,6 @@ S_is_opval_token(int type) {
 #endif /* PERL_IN_TOKE_C */
 #endif /* PERL_CORE */
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-
 union YYSTYPE
 {
 
@@ -175,8 +178,8 @@ union YYSTYPE
     OP *opval;
     GV *gvval;
 
-};
 
+};
 typedef union YYSTYPE YYSTYPE;
 # define YYSTYPE_IS_TRIVIAL 1
 # define YYSTYPE_IS_DECLARED 1
@@ -189,5 +192,5 @@ int yyparse (void);
 
 /* Generated from:
  * 41d458c12a47d69d8ab1315970582b2055ecea77bfc8a582b557e9b3df1c290a perly.y
- * b6fae5748f9bef6db4740aa5e122b84ac5181852d42474d0ecad621fa4253306 regen_perly.pl
+ * 0947213b55d0ed11693554bea04987e886cf285f5c14cf9075fa1e7acc3f4061 regen_perly.pl
  * ex: set ro: */

perly.tab

@@ -17,16 +17,16 @@
 /* YYNSTATES -- Number of states.  */
 #define YYNSTATES  552
 
-/* YYTRANSLATE[YYX] -- Symbol number corresponding to YYX as returned
-   by yylex, with out-of-bounds checking.  */
 #define YYUNDEFTOK  2
 #define YYMAXUTOK   341
 
+/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM
+   as returned by yylex, with out-of-bounds checking.  */
 #define YYTRANSLATE(YYX)                                                \
-  ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+  ((unsigned) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
 
 /* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
-   as returned by yylex, without out-of-bounds checking.  */
+   as returned by yylex.  */
 static const yytype_uint8 yytranslate[] =
 {
        0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
@@ -1131,5 +1131,5 @@ static const toketypes yy_type_tab[] =
 
 /* Generated from:
  * 41d458c12a47d69d8ab1315970582b2055ecea77bfc8a582b557e9b3df1c290a perly.y
- * b6fae5748f9bef6db4740aa5e122b84ac5181852d42474d0ecad621fa4253306 regen_perly.pl
+ * 0947213b55d0ed11693554bea04987e886cf285f5c14cf9075fa1e7acc3f4061 regen_perly.pl
  * ex: set ro: */

pod/perldelta.pod

@@ -264,6 +264,10 @@ that was originally changed for FreeBSD, and the FreeBSD make
 apparently predefines it.  The Solaris make does not predefine C<ECHO>
 which broke this rule on Solaris.  [perl #134218]
 
+=item *
+
+Bison versions 3.1 through 3.4 are now supported.
+
 =back
 
 =head1 Testing

regen_perly.pl

@@ -76,10 +76,10 @@ EOF
 
 # Don't change this to add new bison versions without testing that the generated
 # files actually work :-) Win32 in particular may not like them. :-(
-unless ($version =~ /\b(1\.875[a-z]?|2\.[0134567]|3\.[0])\b/) { die <<EOF; }
+unless ($version =~ /\b(1\.875[a-z]?|2\.[0134567]|3\.[0-4])\b/) { die <<EOF; }
 
 You have the wrong version of bison in your path; currently versions
-1.875, 2.0-2.7 or 3.0 are known to work.  Try installing
+1.875, 2.0-2.7 or 3.0-3.4 are known to work.  Try installing
     http://ftp.gnu.org/gnu/bison/bison-2.5.1.tar.gz
 or similar.  Your bison identifies itself as: