fix nl_langinfo with static linking (BZ #16915)

For static linking the locale code avoids linking code and data for
unused categories. However for nl_langinfo we know only at runtime which
categories are used, so direct reference to every nl_current_CATEGORY
symbol should be done.

This was broken by commit bc3e1c1273 where
nl_langinfo_l and nl_langinfo have been merged and some code has been
lost in the process.

In order to detect locales issues with static linking, compile a version
of tst-langinfo with static linking.

Note: this is Debian bug#747103 reported by Raphael <raphael.astier@eliot-sa.com>

ChangeLog

@@ -1,3 +1,16 @@
+2014-05-20  Aurelien Jarno  <aurelien@aurel32.net>
+
+	[BZ #16915]
+	* locale/nl_langinfo_l.c: Make direct reference to every
+	_nl_current_CATEGORY symbol.
+	* localedata/Makefile (test-srcs): Add tst-langinfo-static.
+	(tests-static): Add tst-langinfo-static.
+	(tests-special): Add tst-langinfo-static.out.
+	($(objpfx)tst-langinfo.out): Redirect output.
+	($(objpfx)tst-langinfo-static.out): New.
+	* localedata/tst-langinfo.sh: Send output to stdout.
+	* localedata/tst-langinfo-static.c: New file.
+
 2014-05-20  Richard Henderson  <rth@redhat.com>
 
 	[BZ #16967]

NEWS

@@ -17,7 +17,8 @@ Version 2.20
   16712, 16713, 16714, 16731, 16739, 16740, 16743, 16754, 16758, 16759,
   16760, 16770, 16786, 16789, 16791, 16799, 16800, 16815, 16823, 16824,
   16831, 16838, 16849, 16854, 16876, 16877, 16885, 16888, 16890, 16912,
-  16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16966, 16967.
+  16915, 16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16966,
+  16967.
 
 * The minimum Linux kernel version that this version of the GNU C Library
   can be used with is 2.6.32.

locale/nl_langinfo_l.c

@@ -20,6 +20,7 @@
 #include <locale.h>
 #include <errno.h>
 #include <stddef.h>
+#include <stdlib.h>
 #include "localeinfo.h"
 
 
@@ -43,7 +44,21 @@ __nl_langinfo_l (item, l)
   if (index == _NL_ITEM_INDEX (_NL_LOCALE_NAME (category)))
     return (char *) l->__names[category];
 
+#if defined NL_CURRENT_INDIRECT
+  /* Make direct reference to every _nl_current_CATEGORY symbol,
+     since we know only at runtime which categories are used.  */
+  switch (category)
+    {
+# define DEFINE_CATEGORY(category, category_name, items, a) \
+      case category: data = *_nl_current_##category; break;
+# include "categories.def"
+# undef DEFINE_CATEGORY
+    default:                   /* Should be impossible.  */
+      abort();
+    }
+#else
   data = l->__locales[category];
+#endif
 
   if (index >= data->nstrings)
     /* Bogus index for this category: bogus item.  */

localedata/Makefile

@@ -35,7 +35,7 @@ vpath %.h tests-mbwc
 
 test-srcs := collate-test xfrm-test tst-fmon tst-rpmatch tst-trans \
 	     tst-mbswcs1 tst-mbswcs2 tst-mbswcs3 tst-mbswcs4 tst-mbswcs5 \
-	     tst-ctype tst-wctype tst-langinfo tst-numeric
+	     tst-ctype tst-wctype tst-langinfo tst-langinfo-static tst-numeric
 test-input := de_DE.ISO-8859-1 en_US.ISO-8859-1 da_DK.ISO-8859-1 \
 	      hr_HR.ISO-8859-2 sv_SE.ISO-8859-1 tr_TR.UTF-8 fr_FR.UTF-8 \
 	      si_LK.UTF-8
@@ -95,7 +95,9 @@ tests-special += $(objpfx)sort-test.out $(objpfx)tst-fmon.out \
 		 $(objpfx)tst-locale.out $(objpfx)tst-rpmatch.out \
 		 $(objpfx)tst-trans.out $(objpfx)tst-mbswcs.out \
 		 $(objpfx)tst-ctype.out $(objpfx)tst-wctype.out \
-		 $(objpfx)tst-langinfo.out $(objpfx)tst-numeric.out
+		 $(objpfx)tst-langinfo.out $(objpfx)tst-langinfo-static.out \
+		 $(objpfx)tst-numeric.out
+tests-static += tst-langinfo-static
 
 ifeq ($(run-built-tests),yes)
 # We have to generate locales
@@ -197,7 +199,12 @@ $(objpfx)tst-wctype.out: tst-wctype.sh $(objpfx)tst-wctype \
 $(objpfx)tst-langinfo.out: tst-langinfo.sh $(objpfx)tst-langinfo \
 			$(objpfx)sort-test.out \
 			$(addprefix $(objpfx),$(CTYPE_FILES))
-	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)'; \
+	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
+	$(evaluate-test)
+$(objpfx)tst-langinfo-static.out: tst-langinfo.sh $(objpfx)tst-langinfo-static \
+			$(objpfx)sort-test.out \
+			$(addprefix $(objpfx),$(CTYPE_FILES))
+	$(SHELL) $< $(common-objpfx) '$(test-program-cmd)' > $@; \
 	$(evaluate-test)
 $(objpfx)tst-digits.out: $(objpfx)tst-locale.out
 $(objpfx)tst-mbswcs6.out: $(addprefix $(objpfx),$(CTYPE_FILES))

localedata/tst-langinfo-static.c

@@ -0,0 +1 @@
+#include "tst-langinfo.c"

localedata/tst-langinfo.sh

@@ -340,7 +340,6 @@ ja_JP.EUC-JP         NOEXPR      ^([nN
 ja_JP.EUC-JP         CODESET     EUC-JP
 EOF
 LOCPATH=${common_objpfx}localedata GCONV_PATH=${common_objpfx}iconvdata \
-LC_ALL=tt_TT ${tst_langinfo} \
-    > ${common_objpfx}localedata/tst-langinfo.out
+LC_ALL=tt_TT ${tst_langinfo}
 
 exit $?