Fix isblank / isascii / toascii namespace (bug 17635).

Use of isblank brings in isascii and toascii, but isblank is a C99
function and the other two aren't; similarly, isascii and toascii are
UNIX98 functions and bring in isblank, which isn't.  (Not a
conformance issue because of the is* and to* reservation, but still
contrary to glibc practice.)  This patch fixes this by splitting
isblank out of ctype-extn.c to a separate ctype-c99.c.  isblank_l is
also moved to a separate file, ctype-c99_l.c (non-XSI POSIX.1-2008 has
isblank_l, but isascii / toascii are marked OB XSI).  (In principle
all these functions could go in separate files - that's optimal for
static linking - but they are also all very small, and splitting them
all out is not needed to fix the present bug.)

Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by the patch - the ordering in which new and
existing sources are listed in ctype/Makefile is arranged so functions
go in the same order so that this comparison works).

	[BZ #17635]
	* ctype/ctype-c99.c: New file.  isblank implementation moved from
	...
	* ctype/ctype-extn.c: ... here.
	(__isblank_l): Move to ...
	* ctype/ctype-c99_l.c: ... here.  New file.
	* ctype/Makefile (routines): Add ctype-c99 and ctype-c99_l.
	* conform/Makefile (test-xfail-ISO99/ctype.h/linknamespace):
	Remove variable.
	(test-xfail-ISO11/ctype.h/linknamespace): Likewise.
	(test-xfail-XPG3/ctype.h/linknamespace): Likewise.
	(test-xfail-XPG4/ctype.h/linknamespace): Likewise.
	(test-xfail-UNIX98/ctype.h/linknamespace): Likewise.
	(test-xfail-POSIX2008/ctype.h/linknamespace): Likewise.

ChangeLog

@@ -1,5 +1,20 @@
 2015-01-05  Joseph Myers  <joseph@codesourcery.com>
 
+	[BZ #17635]
+	* ctype/ctype-c99.c: New file.  isblank implementation moved from
+	...
+	* ctype/ctype-extn.c: ... here.
+	(__isblank_l): Move to ...
+	* ctype/ctype-c99_l.c: ... here.  New file.
+	* ctype/Makefile (routines): Add ctype-c99 and ctype-c99_l.
+	* conform/Makefile (test-xfail-ISO99/ctype.h/linknamespace):
+	Remove variable.
+	(test-xfail-ISO11/ctype.h/linknamespace): Likewise.
+	(test-xfail-XPG3/ctype.h/linknamespace): Likewise.
+	(test-xfail-XPG4/ctype.h/linknamespace): Likewise.
+	(test-xfail-UNIX98/ctype.h/linknamespace): Likewise.
+	(test-xfail-POSIX2008/ctype.h/linknamespace): Likewise.
+
 	[BZ #17777]
 	* sysdeps/unix/sysv/linux/wordsize-64/posix_fadvise.c
 	(posix_fadvise64): Define as weak alias not strong alias.

NEWS

@@ -14,9 +14,9 @@ Version 2.21
   17344, 17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506,
   17508, 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581, 17582,
   17583, 17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625, 17630,
-  17633, 17634, 17647, 17653, 17657, 17664, 17665, 17668, 17682, 17717,
+  17633, 17634, 17635, 17647, 17653, 17657, 17664, 17665, 17668, 17682,
-  17719, 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746,
+  17717, 17719, 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745,
-  17747, 17775, 17777, 17780, 17781, 17782
+  17746, 17747, 17775, 17777, 17780, 17781, 17782
 
 * i386 memcpy functions optimized with SSE2 unaligned load/store.
 

conform/Makefile

@@ -345,9 +345,6 @@ test-xfail-XOPEN2K/ndbm.h/linknamespace = yes
 test-xfail-XOPEN2K8/ndbm.h/linknamespace = yes
 
 # Unsorted expected failures.
-test-xfail-ISO99/ctype.h/linknamespace = yes
-test-xfail-ISO11/ctype.h/linknamespace = yes
-test-xfail-XPG3/ctype.h/linknamespace = yes
 test-xfail-XPG3/fnmatch.h/linknamespace = yes
 test-xfail-XPG3/glob.h/linknamespace = yes
 test-xfail-XPG3/regex.h/linknamespace = yes
@@ -355,7 +352,6 @@ test-xfail-XPG3/search.h/linknamespace = yes
 test-xfail-XPG3/stdio.h/linknamespace = yes
 test-xfail-XPG3/unistd.h/linknamespace = yes
 test-xfail-XPG3/wordexp.h/linknamespace = yes
-test-xfail-XPG4/ctype.h/linknamespace = yes
 test-xfail-XPG4/fmtmsg.h/linknamespace = yes
 test-xfail-XPG4/fnmatch.h/linknamespace = yes
 test-xfail-XPG4/glob.h/linknamespace = yes
@@ -375,7 +371,6 @@ test-xfail-POSIX/regex.h/linknamespace = yes
 test-xfail-POSIX/semaphore.h/linknamespace = yes
 test-xfail-POSIX/unistd.h/linknamespace = yes
 test-xfail-POSIX/wordexp.h/linknamespace = yes
-test-xfail-UNIX98/ctype.h/linknamespace = yes
 test-xfail-UNIX98/fmtmsg.h/linknamespace = yes
 test-xfail-UNIX98/fnmatch.h/linknamespace = yes
 test-xfail-UNIX98/glob.h/linknamespace = yes
@@ -403,7 +398,6 @@ test-xfail-XOPEN2K/syslog.h/linknamespace = yes
 test-xfail-XOPEN2K/ucontext.h/linknamespace = yes
 test-xfail-XOPEN2K/unistd.h/linknamespace = yes
 test-xfail-XOPEN2K/wordexp.h/linknamespace = yes
-test-xfail-POSIX2008/ctype.h/linknamespace = yes
 test-xfail-POSIX2008/dirent.h/linknamespace = yes
 test-xfail-POSIX2008/grp.h/linknamespace = yes
 test-xfail-POSIX2008/netdb.h/linknamespace = yes

ctype/Makefile

@@ -24,7 +24,7 @@ include ../Makeconfig
 
 headers	:= ctype.h
 
-routines	:= ctype ctype-extn ctype_l isctype
+routines	:= ctype ctype-c99 ctype-extn ctype-c99_l ctype_l isctype
 aux		:= ctype-info
 
 tests	:= test_ctype

ctype/ctype-c99.c

@@ -0,0 +1,26 @@
+/* External function version of isblank.
+   Copyright (C) 1991-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define	__NO_CTYPE
+#include <ctype.h>
+
+int
+isblank (int c)
+{
+  return __isctype (c, _ISblank);
+}

ctype/ctype-c99_l.c

@@ -0,0 +1,27 @@
+/* External function version of isblank_l.
+   Copyright (C) 1991-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define	__NO_CTYPE
+#include <ctype.h>
+
+int
+__isblank_l (int c, __locale_t l)
+{
+  return __isctype_l (c, _ISblank, l);
+}
+weak_alias (__isblank_l, isblank_l)

ctype/ctype-extn.c

@@ -23,14 +23,7 @@
 #define __ctype_toupper \
   ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128)
 
-/* Real function versions of the non-ANSI ctype functions.  isblank is
+/* Real function versions of the non-ANSI ctype functions.  */
-   now in ISO C99 but we leave it here.  */
-
-int
-isblank (int c)
-{
-  return __isctype (c, _ISblank);
-}
 
 int
 _tolower (int c)
@@ -56,11 +49,3 @@ isascii (int c)
   return __isascii (c);
 }
 weak_alias (isascii, __isascii_l)
-
-
-int
-__isblank_l (int c, __locale_t l)
-{
-  return __isctype_l (c, _ISblank, l);
-}
-weak_alias (__isblank_l, isblank_l)