Blame SOURCES/gettext-0.19.8.1-CVE-2018-18751.patch

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From dce3a16e5e9368245735e29bf498dcd5e3e474a4 Mon Sep 17 00:00:00 2001
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From: Daiki Ueno <ueno@gnu.org>
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Date: Thu, 15 Sep 2016 13:57:24 +0200
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Subject: [PATCH] xgettext: Fix crash with *.po file input
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When xgettext was given two *.po files with the same msgid_plural, it
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crashed with double-free.  Problem reported by Davlet Panech in:
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http://lists.gnu.org/archive/html/bug-gettext/2016-09/msg00001.html
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praiskup:
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- I dropped the testsuite part, otherwise we'd have to 'autoreconf -vif' the
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  sources
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- I'm patching manually the po-gram-gen.c file to avoid 'bison' BR
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diff --git a/gettext-tools/src/po-gram-gen.y b/gettext-tools/src/po-gram-gen.y
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index becf5e607..4428e7725 100644
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--- a/gettext-tools/src/po-gram-gen.y
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+++ b/gettext-tools/src/po-gram-gen.y
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@@ -221,14 +221,11 @@ message
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                   check_obsolete ($1, $3);
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                   check_obsolete ($1, $4);
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                   if (!$1.obsolete || pass_obsolete_entries)
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-                    {
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-                      do_callback_message ($1.ctxt, string2, &$1.pos, $3.string,
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-                                           $4.rhs.msgstr, $4.rhs.msgstr_len, &$4.pos,
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-                                           $1.prev_ctxt,
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-                                           $1.prev_id, $1.prev_id_plural,
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-                                           $1.obsolete);
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-                      free ($3.string);
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-                    }
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+                    do_callback_message ($1.ctxt, string2, &$1.pos, $3.string,
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+                                         $4.rhs.msgstr, $4.rhs.msgstr_len, &$4.pos,
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+                                         $1.prev_ctxt,
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+                                         $1.prev_id, $1.prev_id_plural,
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+                                         $1.obsolete);
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                   else
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                     {
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                       free_message_intro ($1);
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diff --git a/gettext-tools/src/read-catalog.c b/gettext-tools/src/read-catalog.c
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index 571d18e1b..6af6d2025 100644
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--- a/gettext-tools/src/read-catalog.c
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+++ b/gettext-tools/src/read-catalog.c
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@@ -397,6 +397,8 @@ default_add_message (default_catalog_reader_ty *this,
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          appropriate.  */
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       mp = message_alloc (msgctxt, msgid, msgid_plural, msgstr, msgstr_len,
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                           msgstr_pos);
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+      if (msgid_plural != NULL)
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+        free (msgid_plural);
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       mp->prev_msgctxt = prev_msgctxt;
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       mp->prev_msgid = prev_msgid;
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       mp->prev_msgid_plural = prev_msgid_plural;
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diff --git a/gettext-tools/src/po-gram-gen.c b/gettext-tools/src/po-gram-gen.c
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--- a/gettext-tools/src/po-gram-gen.c
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+++ b/gettext-tools/src/po-gram-gen.c
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@@ -1,8 +1,8 @@
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-/* A Bison parser, made by GNU Bison 3.0.4.  */
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+/* A Bison parser, made by GNU Bison 3.0.5.  */
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 /* Bison implementation for Yacc-like parsers in C
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-   Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation, Inc.
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+   Copyright (C) 1984, 1989-1990, 2000-2015, 2018 Free Software Foundation, Inc.
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    This program is free software: you can redistribute it and/or modify
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    it under the terms of the GNU General Public License as published by
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@@ -44,7 +44,7 @@
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 #define YYBISON 1
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 /* Bison version.  */
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-#define YYBISON_VERSION "3.0.4"
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+#define YYBISON_VERSION "3.0.5"
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 /* Skeleton name.  */
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 #define YYSKELETON_NAME "yacc.c"
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@@ -568,9 +568,9 @@
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 static const yytype_uint16 yyrline[] =
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 {
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        0,   169,   169,   171,   172,   173,   174,   179,   187,   195,
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-     216,   240,   249,   258,   269,   278,   292,   301,   315,   321,
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-     332,   338,   350,   361,   372,   376,   391,   414,   422,   434,
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-     442
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+     216,   237,   246,   255,   266,   275,   289,   298,   312,   318,
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+     329,   335,   347,   358,   369,   373,   388,   411,   419,   431,
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+     439
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 };
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 #endif
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@@ -1054,6 +1054,7 @@
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       case N:                               \
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         yyformat = S;                       \
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       break
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+    default: /* Avoid compiler warnings. */
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       YYCASE_(0, YY_("syntax error"));
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       YYCASE_(1, YY_("syntax error, unexpected %s"));
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       YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
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@@ -1370,23 +1371,23 @@
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   switch (yyn)
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     {
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         case 7:
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-#line 180 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 180 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   po_callback_comment_dispatcher ((yyvsp[0].string).string);
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                 }
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-#line 1378 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1379 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 8:
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-#line 188 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 188 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                    po_callback_domain ((yyvsp[0].string).string);
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                 }
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-#line 1386 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1387 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 9:
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-#line 196 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 196 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   char *string2 = string_list_concat_destroy (&(yyvsp[-2].stringlist).stringlist);
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                   char *string4 = string_list_concat_destroy (&(yyvsp[0].stringlist).stringlist);
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@@ -1407,11 +1408,11 @@
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                       free (string4);
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                     }
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                 }
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-#line 1411 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1412 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 10:
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-#line 217 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 217 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   char *string2 = string_list_concat_destroy (&(yyvsp[-2].stringlist).stringlist);
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@@ -1419,14 +1420,11 @@
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                   check_obsolete ((yyvsp[-3].message_intro), (yyvsp[-1].string));
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                   check_obsolete ((yyvsp[-3].message_intro), (yyvsp[0].rhs));
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                   if (!(yyvsp[-3].message_intro).obsolete || pass_obsolete_entries)
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-                    {
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-                      do_callback_message ((yyvsp[-3].message_intro).ctxt, string2, &(yyvsp[-3].message_intro).pos, (yyvsp[-1].string).string,
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-                                           (yyvsp[0].rhs).rhs.msgstr, (yyvsp[0].rhs).rhs.msgstr_len, &(yyvsp[0].rhs).pos,
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-                                           (yyvsp[-3].message_intro).prev_ctxt,
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-                                           (yyvsp[-3].message_intro).prev_id, (yyvsp[-3].message_intro).prev_id_plural,
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-                                           (yyvsp[-3].message_intro).obsolete);
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-                      free ((yyvsp[-1].string).string);
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-                    }
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+                    do_callback_message ((yyvsp[-3].message_intro).ctxt, string2, &(yyvsp[-3].message_intro).pos, (yyvsp[-1].string).string,
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+                                         (yyvsp[0].rhs).rhs.msgstr, (yyvsp[0].rhs).rhs.msgstr_len, &(yyvsp[0].rhs).pos,
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+                                         (yyvsp[-3].message_intro).prev_ctxt,
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+                                         (yyvsp[-3].message_intro).prev_id, (yyvsp[-3].message_intro).prev_id_plural,
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+                                         (yyvsp[-3].message_intro).obsolete);
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                   else
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                     {
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                       free_message_intro ((yyvsp[-3].message_intro));
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@@ -1435,11 +1433,11 @@
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                       free ((yyvsp[0].rhs).rhs.msgstr);
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                     }
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                 }
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-#line 1439 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1437 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 11:
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-#line 241 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 238 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-2].message_intro), (yyvsp[-1].stringlist));
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                   check_obsolete ((yyvsp[-2].message_intro), (yyvsp[0].string));
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@@ -1448,11 +1446,11 @@
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                   string_list_destroy (&(yyvsp[-1].stringlist).stringlist);
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                   free ((yyvsp[0].string).string);
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                 }
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-#line 1452 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1450 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 12:
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-#line 250 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 247 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-2].message_intro), (yyvsp[-1].stringlist));
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                   check_obsolete ((yyvsp[-2].message_intro), (yyvsp[0].rhs));
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@@ -1461,22 +1459,22 @@
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                   string_list_destroy (&(yyvsp[-1].stringlist).stringlist);
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                   free ((yyvsp[0].rhs).rhs.msgstr);
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                 }
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-#line 1465 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1463 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 13:
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-#line 259 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 256 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].message_intro), (yyvsp[0].stringlist));
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                   po_gram_error_at_line (&(yyvsp[-1].message_intro).pos, _("missing 'msgstr' section"));
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                   free_message_intro ((yyvsp[-1].message_intro));
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                   string_list_destroy (&(yyvsp[0].stringlist).stringlist);
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                 }
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-#line 1476 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1474 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 14:
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-#line 270 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 267 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   (yyval.message_intro).prev_ctxt = NULL;
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                   (yyval.message_intro).prev_id = NULL;
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@@ -1485,11 +1483,11 @@
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                   (yyval.message_intro).pos = (yyvsp[0].string).pos;
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                   (yyval.message_intro).obsolete = (yyvsp[0].string).obsolete;
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                 }
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-#line 1489 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1487 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 15:
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-#line 279 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 276 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].prev), (yyvsp[0].string));
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                   (yyval.message_intro).prev_ctxt = (yyvsp[-1].prev).ctxt;
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@@ -1499,11 +1497,11 @@
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                   (yyval.message_intro).pos = (yyvsp[0].string).pos;
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                   (yyval.message_intro).obsolete = (yyvsp[0].string).obsolete;
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                 }
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-#line 1503 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1501 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 16:
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-#line 293 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 290 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].string), (yyvsp[0].stringlist));
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                   (yyval.prev).ctxt = (yyvsp[-1].string).string;
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@@ -1512,11 +1510,11 @@
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                   (yyval.prev).pos = (yyvsp[-1].string).pos;
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                   (yyval.prev).obsolete = (yyvsp[-1].string).obsolete;
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                 }
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-#line 1516 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1514 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 17:
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-#line 302 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 299 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-2].string), (yyvsp[-1].stringlist));
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                   check_obsolete ((yyvsp[-2].string), (yyvsp[0].string));
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@@ -1526,21 +1524,21 @@
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                   (yyval.prev).pos = (yyvsp[-2].string).pos;
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                   (yyval.prev).obsolete = (yyvsp[-2].string).obsolete;
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                 }
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-#line 1530 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1528 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 18:
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-#line 316 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 313 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   (yyval.string).string = NULL;
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                   (yyval.string).pos = (yyvsp[0].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[0].pos).obsolete;
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                 }
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-#line 1540 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1538 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 19:
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-#line 322 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 319 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-2].pos), (yyvsp[-1].stringlist));
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                   check_obsolete ((yyvsp[-2].pos), (yyvsp[0].pos));
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@@ -1548,21 +1546,21 @@
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                   (yyval.string).pos = (yyvsp[0].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[0].pos).obsolete;
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                 }
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-#line 1552 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1550 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 20:
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-#line 333 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 330 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   (yyval.string).string = NULL;
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                   (yyval.string).pos = (yyvsp[0].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[0].pos).obsolete;
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                 }
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-#line 1562 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1560 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 21:
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-#line 339 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 336 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-2].pos), (yyvsp[-1].stringlist));
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                   check_obsolete ((yyvsp[-2].pos), (yyvsp[0].pos));
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@@ -1570,11 +1568,11 @@
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                   (yyval.string).pos = (yyvsp[0].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[0].pos).obsolete;
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                 }
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-#line 1574 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1572 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 22:
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-#line 351 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 348 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].pos), (yyvsp[0].stringlist));
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                   plural_counter = 0;
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@@ -1582,30 +1580,30 @@
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                   (yyval.string).pos = (yyvsp[-1].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[-1].pos).obsolete;
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                 }
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-#line 1586 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1584 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 23:
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-#line 362 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 359 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].pos), (yyvsp[0].stringlist));
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                   (yyval.string).string = string_list_concat_destroy (&(yyvsp[0].stringlist).stringlist);
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                   (yyval.string).pos = (yyvsp[-1].pos).pos;
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                   (yyval.string).obsolete = (yyvsp[-1].pos).obsolete;
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                 }
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-#line 1597 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1595 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 24:
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-#line 373 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 370 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   (yyval.rhs) = (yyvsp[0].rhs);
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                 }
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-#line 1605 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1603 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
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   case 25:
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-#line 377 "po-gram-gen.y" /* yacc.c:1646  */
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+#line 374 "po-gram-gen.y" /* yacc.c:1648  */
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     {
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                   check_obsolete ((yyvsp[-1].rhs), (yyvsp[0].rhs));
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                   (yyval.rhs).rhs.msgstr = XNMALLOC ((yyvsp[-1].rhs).rhs.msgstr_len + (yyvsp[0].rhs).rhs.msgstr_len, char);
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@@ -1617,11 +1615,11 @@
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                   (yyval.rhs).pos = (yyvsp[-1].rhs).pos;
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                   (yyval.rhs).obsolete = (yyvsp[-1].rhs).obsolete;
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                 }
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-#line 1621 "po-gram-gen.c" /* yacc.c:1646  */
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+#line 1619 "po-gram-gen.c" /* yacc.c:1648  */
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     break;
245d2c
 
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   case 26:
245d2c
-#line 392 "po-gram-gen.y" /* yacc.c:1646  */
245d2c
+#line 389 "po-gram-gen.y" /* yacc.c:1648  */
245d2c
     {
245d2c
                   check_obsolete ((yyvsp[-4].pos), (yyvsp[-3].pos));
245d2c
                   check_obsolete ((yyvsp[-4].pos), (yyvsp[-2].number));
245d2c
@@ -1640,11 +1638,11 @@
245d2c
                   (yyval.rhs).pos = (yyvsp[-4].pos).pos;
245d2c
                   (yyval.rhs).obsolete = (yyvsp[-4].pos).obsolete;
245d2c
                 }
245d2c
-#line 1644 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1642 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
     break;
245d2c
 
245d2c
   case 27:
245d2c
-#line 415 "po-gram-gen.y" /* yacc.c:1646  */
245d2c
+#line 412 "po-gram-gen.y" /* yacc.c:1648  */
245d2c
     {
245d2c
                   string_list_init (&(yyval.stringlist).stringlist);
245d2c
                   string_list_append (&(yyval.stringlist).stringlist, (yyvsp[0].string).string);
245d2c
@@ -1652,11 +1650,11 @@
245d2c
                   (yyval.stringlist).pos = (yyvsp[0].string).pos;
245d2c
                   (yyval.stringlist).obsolete = (yyvsp[0].string).obsolete;
245d2c
                 }
245d2c
-#line 1656 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1654 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
     break;
245d2c
 
245d2c
   case 28:
245d2c
-#line 423 "po-gram-gen.y" /* yacc.c:1646  */
245d2c
+#line 420 "po-gram-gen.y" /* yacc.c:1648  */
245d2c
     {
245d2c
                   check_obsolete ((yyvsp[-1].stringlist), (yyvsp[0].string));
245d2c
                   (yyval.stringlist).stringlist = (yyvsp[-1].stringlist).stringlist;
245d2c
@@ -1665,11 +1663,11 @@
245d2c
                   (yyval.stringlist).pos = (yyvsp[-1].stringlist).pos;
245d2c
                   (yyval.stringlist).obsolete = (yyvsp[-1].stringlist).obsolete;
245d2c
                 }
245d2c
-#line 1669 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1667 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
     break;
245d2c
 
245d2c
   case 29:
245d2c
-#line 435 "po-gram-gen.y" /* yacc.c:1646  */
245d2c
+#line 432 "po-gram-gen.y" /* yacc.c:1648  */
245d2c
     {
245d2c
                   string_list_init (&(yyval.stringlist).stringlist);
245d2c
                   string_list_append (&(yyval.stringlist).stringlist, (yyvsp[0].string).string);
245d2c
@@ -1677,11 +1675,11 @@
245d2c
                   (yyval.stringlist).pos = (yyvsp[0].string).pos;
245d2c
                   (yyval.stringlist).obsolete = (yyvsp[0].string).obsolete;
245d2c
                 }
245d2c
-#line 1681 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1679 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
     break;
245d2c
 
245d2c
   case 30:
245d2c
-#line 443 "po-gram-gen.y" /* yacc.c:1646  */
245d2c
+#line 440 "po-gram-gen.y" /* yacc.c:1648  */
245d2c
     {
245d2c
                   check_obsolete ((yyvsp[-1].stringlist), (yyvsp[0].string));
245d2c
                   (yyval.stringlist).stringlist = (yyvsp[-1].stringlist).stringlist;
245d2c
@@ -1690,11 +1688,11 @@
245d2c
                   (yyval.stringlist).pos = (yyvsp[-1].stringlist).pos;
245d2c
                   (yyval.stringlist).obsolete = (yyvsp[-1].stringlist).obsolete;
245d2c
                 }
245d2c
-#line 1694 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1692 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
     break;
245d2c
 
245d2c
 
245d2c
-#line 1698 "po-gram-gen.c" /* yacc.c:1646  */
245d2c
+#line 1696 "po-gram-gen.c" /* yacc.c:1648  */
245d2c
       default: break;
245d2c
     }
245d2c
   /* User semantic actions sometimes alter yychar, and that requires
245d2c
-- 
245d2c
2.19.1
245d2c