Merge branch 'c11'

31 files changed, 825 insertions, 52 deletions

diff --git a/ChangeLog b/ChangeLog
index 73b1d419bf..074c7a8e8d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -30,8 +30,64 @@
 	* posix/regex_internal.c (re_string_fetch_byte_case): Remove
 	pure attribute.
 
+2011-12-24  Ulrich Drepper  <drepper@gmail.com>
+
+	* iconv/gconv_simple.c: Add ASCII<->UTF-16 transformations.
+	* iconv/gconv_builtin.h: Add entries for internal ASCII<->UTF-16
+	transformations.
+	* iconv/gconv_int.h: Likewise.
+	* wcsmbs/Makefile (routines): Add mbrtoc16 and c16rtomb.
+	* wcsmbs/Versions: Export mbrtoc16, c16rtomb, mbrtoc32, c32rtomb
+	from libc for GLIBC_2.16.
+	* wcsmbs/mbrtowc.c: Define mbrtoc32 alias.
+	* wcsmbs/wcrtomb.c: Define c32rtomb alias.
+	* wcsmbs/uchar.h: Really define mbstate_t.
+	* wcsmbs/wchar.h: Allow defining mbstate_t in uchar.h.
+	* wcsmbs/c16rtomb.c: New file.
+	* wcsmbs/mbrtoc16.c: New file.
+	* wcsmbs/wcsmbsload.c: Add static definitions for c16 conversions
+	for C/POSIX locale.
+	(__wcsmbs_load_conv): Do not fill in c16 routines yet.
+	* wcsmbs/wcsmbsload.h (gconv_fcts): Add entries for c16 routines.
+
+	* wcsmbs/wchar.h: Add missing __restrict.
+
 2011-12-23  Ulrich Drepper  <drepper@gmail.com>
 
+	[BZ #13532]
+	* time/Makefile (routines): Add timespec_get.
+	* time/Versions: Export timespec_get from libc for GLIBC_2.16.
+	* time/time.h: Define TIME_UTC and declare timespec_get.  Define
+	timespec for ISO C11.
+	* time/timespec_get.c: New file.
+	* sysdeps/unix/sysv/linux/timespec_get.c: New file.
+	* sysdeps/unix/sysv/linux/x86_64/timespec_get.c: New file.
+
+	[BZ #13531]
+	* malloc/malloc.c: Define alias aligned_alloc for public_mEMALIGn.
+	* stdlib/stdlib.h: Declare aligned_alloc.
+	* Versions.def: Add GLIBC_2.16 for libc.
+	* malloc/Versions: Export aligned_alloc from libc for GLIBC_2.16.
+
+	[BZ 13527]
+	* stdlib/stdlib.h: Make at_quick_exit and quick_exit available for
+	ISO C11.
+
+	* include/features.h: Define __USE_ISOCXX11 when compiling ISO C++11
+	code.
+
+	[BZ #13528]
+	* libio/stdio.h: Do not declare gets for ISO C11 and _GNU_SOURCE.
+
+	[BZ #13529]
+	* assert/assert.h (static_assert): Define.
+
+	* version.h: Update for 2.16 development version.
+
+	[BZ #13526]
+	* include/features.h: Handle __STDC_VERSION__ >= 201112 and
+	_ISOC11_SOURCE.
+
 	* version.h (RELEASE): Bump for 2.15 release.
 	* include/features.h (__GLIBC_MINOR__): Bump to 15.
 
diff --git a/NEWS b/NEWS
index 55dba1bb79..2d7a9df3d7 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,27 @@ See the end for copying conditions.
 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
 using `glibc' in the "product" field.
 
+Version 2.16
+
+* The following bugs are resolved with this release:
+
+  13526, 13527, 13528, 13529, 13531, 13532
+
+* ISO C11 support:
+
+  + define static_assert
+
+  + do not declare gets
+
+  + declare at_quick_exit and quick_exit also for ISO C11
+
+  + aligned_alloc.  NB: The code is deliberately allows the size parameter
+    to not be a multiple of the alignment.  This is a moronic requirement
+    in the standard but it is only a requirement on the caller, not the
+    implementation.
+
+  + timespec_get added
+
 Version 2.15
 
 * The following bugs are resolved with this release:
diff --git a/Versions.def b/Versions.def
index 6b05e5ba5d..2b44f5e0bb 100644
--- a/Versions.def
+++ b/Versions.def
@@ -32,6 +32,7 @@ libc {
   GLIBC_2.13
   GLIBC_2.14
   GLIBC_2.15
+  GLIBC_2.16
   HURD_CTHREADS_0.3
 %ifdef EXPORT_UNWIND_FIND_FDE
   GCC_3.0
diff --git a/assert/assert.h b/assert/assert.h
index 841f435973..4022e28b55 100644
--- a/assert/assert.h
+++ b/assert/assert.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991,1992,1994-2001,2003,2004,2007
+/* Copyright (C) 1991,1992,1994-2001,2003,2004,2007,2011
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -113,3 +113,10 @@ __END_DECLS
 # endif
 
 #endif /* NDEBUG.  */
+
+
+#ifdef __USE_ISOC11
+/* Static assertion.  Requires support in the compiler.  */
+# undef static_assert
+# define static_assert _Static_assert
+#endif
diff --git a/debug/tst-chk1.c b/debug/tst-chk1.c
index 0ec8ab07d9..7f0186e706 100644
--- a/debug/tst-chk1.c
+++ b/debug/tst-chk1.c
@@ -33,6 +33,12 @@
 #include <sys/socket.h>
 #include <sys/un.h>
 
+__BEGIN_DECLS
+/* The <stdio.h> header does not include the declaration for gets
+   anymore when compiling with _GNU_SOURCE.  Provide a copy here.  */
+extern char *gets (char *__s);
+__END_DECLS
+
 #define obstack_chunk_alloc malloc
 #define obstack_chunk_free free
 
diff --git a/iconv/gconv_builtin.h b/iconv/gconv_builtin.h
index ef9ab8d7cf..fd736a480d 100644
--- a/iconv/gconv_builtin.h
+++ b/iconv/gconv_builtin.h
@@ -1,5 +1,5 @@
 /* Builtin transformations.
-   Copyright (C) 1997-1999, 2000-2002, 2006 Free Software Foundation, Inc.
+   Copyright (C) 1997-1999, 2000-2002, 2006, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -122,3 +122,24 @@ BUILTIN_TRANSFORMATION ("INTERNAL", "UNICODEBIG//", 1,
 			__gconv_transform_internal_ucs2reverse, NULL,
 			4, 4, 2, 2)
 #endif
+
+
+BUILTIN_TRANSFORMATION ("ANSI_X3.4-1968//", "UTF-16//", 1, "=ascii->UTF-16",
+			__gconv_transform_ascii_utf16, NULL, 2, 2, 1, 1)
+
+BUILTIN_TRANSFORMATION ("UTF-16//", "ANSI_X3.4-1968//", 1, "=UTF-16->ascii",
+			__gconv_transform_utf16_ascii, NULL, 2, 2, 1, 1)
+
+#if BYTE_ORDER == BIG_ENDIAN
+BUILTIN_TRANSFORMATION ("ANSI_X3.4-1968//", "UTF-16BE//", 1, "=ascii->UTF-16BE",
+			__gconv_transform_ascii_utf16, NULL, 2, 2, 1, 1)
+
+BUILTIN_TRANSFORMATION ("UTF-16BE//", "ANSI_X3.4-1968//", 1, "=UTF-16BE->ascii",
+			__gconv_transform_utf16_ascii, NULL, 2, 2, 1, 1)
+#else
+BUILTIN_TRANSFORMATION ("ANSI_X3.4-1968//", "UTF-16LE//", 1, "=ascii->UTF-16LE",
+			__gconv_transform_ascii_utf16, NULL, 2, 2, 1, 1)
+
+BUILTIN_TRANSFORMATION ("UTF-16LE//", "ANSI_X3.4-1968//", 1, "=UTF-16LE->ascii",
+			__gconv_transform_utf16_ascii, NULL, 2, 2, 1, 1)
+#endif
diff --git a/iconv/gconv_int.h b/iconv/gconv_int.h
index fd112204bc..80253dd5be 100644
--- a/iconv/gconv_int.h
+++ b/iconv/gconv_int.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997-2005, 2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1997-2005, 2006, 2007, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -303,6 +303,8 @@ __BUILTIN_TRANSFORM (__gconv_transform_internal_ucs4le);
 __BUILTIN_TRANSFORM (__gconv_transform_ucs4le_internal);
 __BUILTIN_TRANSFORM (__gconv_transform_internal_utf16);
 __BUILTIN_TRANSFORM (__gconv_transform_utf16_internal);
+__BUILTIN_TRANSFORM (__gconv_transform_ascii_utf16);
+__BUILTIN_TRANSFORM (__gconv_transform_utf16_ascii);
 # undef __BUITLIN_TRANSFORM
 
 /* Specialized conversion function for a single byte to INTERNAL, recognizing
diff --git a/iconv/gconv_simple.c b/iconv/gconv_simple.c
index e34f3770ad..b0ef3e67b0 100644
--- a/iconv/gconv_simple.c
+++ b/iconv/gconv_simple.c
@@ -1,5 +1,5 @@
 /* Simple transformations functions.
-   Copyright (C) 1997-2005, 2007, 2008, 2009 Free Software Foundation, Inc.
+   Copyright (C) 1997-2005, 2007, 2008, 2009, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -965,7 +965,7 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
 	    cnt = 2;							      \
 	    ch &= 0x1f;							      \
 	  }								      \
-        else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1))		      \
+	else if (__builtin_expect ((ch & 0xf0) == 0xe0, 1))		      \
 	  {								      \
 	    /* We expect three bytes.  */				      \
 	    cnt = 3;							      \
@@ -1221,7 +1221,7 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
     else								      \
       {									      \
 	put16 (outptr, val);						      \
-        outptr += sizeof (uint16_t);					      \
+	outptr += sizeof (uint16_t);					      \
 	inptr += 4;							      \
       }									      \
   }
@@ -1320,3 +1320,72 @@ ucs4le_internal_loop_single (struct __gconv_step *step,
 #define LOOP_NEED_FLAGS
 #include <iconv/loop.c>
 #include <iconv/skeleton.c>
+
+
+/* Convert from ISO 646-IRV to UTF-16.  */
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		1
+#define MIN_NEEDED_TO		2
+#define FROM_DIRECTION		1
+#define FROM_LOOP		ascii_utf16_loop
+#define TO_LOOP			ascii_utf16_loop /* This is not used.  */
+#define FUNCTION_NAME		__gconv_transform_ascii_utf16
+#define ONE_DIRECTION		1
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    if (__builtin_expect (*inptr > '\x7f', 0))				      \
+      {									      \
+	/* The value is too large.  We don't try transliteration here since   \
+	   this is not an error because of the lack of possibilities to	      \
+	   represent the result.  This is a genuine bug in the input since    \
+	   ASCII does not allow such values.  */			      \
+	STANDARD_FROM_LOOP_ERR_HANDLER (1);				      \
+      }									      \
+    else								      \
+      {									      \
+	/* It's an one byte sequence.  */				      \
+	*((uint16_t *) outptr) = *inptr++;				      \
+	outptr += sizeof (uint16_t);					      \
+      }									      \
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+#include <iconv/skeleton.c>
+
+
+/* Convert from UTF-16 to ISO 646-IRV.  */
+#define DEFINE_INIT		0
+#define DEFINE_FINI		0
+#define MIN_NEEDED_FROM		2
+#define MIN_NEEDED_TO		1
+#define FROM_DIRECTION		1
+#define FROM_LOOP		utf16_ascii_loop
+#define TO_LOOP			utf16_ascii_loop /* This is not used.  */
+#define FUNCTION_NAME		__gconv_transform_utf16_ascii
+#define ONE_DIRECTION		1
+
+#define MIN_NEEDED_INPUT	MIN_NEEDED_FROM
+#define MIN_NEEDED_OUTPUT	MIN_NEEDED_TO
+#define LOOPFCT			FROM_LOOP
+#define BODY \
+  {									      \
+    if (__builtin_expect (*((const uint16_t *) inptr) > 0x7f, 0))	      \
+      {									      \
+	UNICODE_TAG_HANDLER (*((const uint16_t *) inptr), 2);		      \
+	STANDARD_TO_LOOP_ERR_HANDLER (2);				      \
+      }									      \
+    else								      \
+      {									      \
+	/* It's an one byte sequence.  */				      \
+	*outptr++ = *((const uint16_t *) inptr);			      \
+	inptr += sizeof (uint16_t);					      \
+      }									      \
+  }
+#define LOOP_NEED_FLAGS
+#include <iconv/loop.c>
+#include <iconv/skeleton.c>
diff --git a/include/features.h b/include/features.h
index c7b7972806..7bb27c5b08 100644
--- a/include/features.h
+++ b/include/features.h
@@ -25,6 +25,7 @@
 
    __STRICT_ANSI__	ISO Standard C.
    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
+   _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
    _POSIX_SOURCE	IEEE Std 1003.1.
    _POSIX_C_SOURCE	If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;
 			if >=199309L, add IEEE Std 1003.1b-1993;
@@ -57,6 +58,7 @@
    These are defined by this file and are used by the
    header files to decide what to declare or define:
 
+   __USE_ISOC11		Define ISO C11 things.
    __USE_ISOC99		Define ISO C99 things.
    __USE_ISOC95		Define ISO C90 AMD1 (C95) things.
    __USE_POSIX		Define IEEE Std 1003.1 things.
@@ -95,8 +97,10 @@
 
 
 /* Undefine everything, so we get a clean slate.  */
+#undef	__USE_ISOC11
 #undef	__USE_ISOC99
 #undef	__USE_ISOC95
+#undef	__USE_ISOCXX11
 #undef	__USE_POSIX
 #undef	__USE_POSIX2
 #undef	__USE_POSIX199309
@@ -158,6 +162,8 @@
 # define _ISOC95_SOURCE	1
 # undef  _ISOC99_SOURCE
 # define _ISOC99_SOURCE	1
+# undef  _ISOC11_SOURCE
+# define _ISOC11_SOURCE	1
 # undef  _POSIX_SOURCE
 # define _POSIX_SOURCE	1
 # undef  _POSIX_C_SOURCE
@@ -185,21 +191,33 @@
 # define _SVID_SOURCE	1
 #endif
 
-/* This is to enable the ISO C99 extension.  Also recognize the old macro
-   which was used prior to the standard acceptance.  This macro will
-   eventually go away and the features enabled by default once the ISO C99
-   standard is widely adopted.  */
-#if (defined _ISOC99_SOURCE || defined _ISOC9X_SOURCE \
+/* This is to enable the ISO C11 extension.  */
+#if (defined _ISOC11_SOURCE \
+     || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L))
+# define __USE_ISOC11	1
+#endif
+
+/* This is to enable the ISO C99 extension.  */
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
      || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
 # define __USE_ISOC99	1
 #endif
 
 /* This is to enable the ISO C90 Amendment 1:1995 extension.  */
-#if (defined _ISOC99_SOURCE || defined _ISOC9X_SOURCE \
+#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \
      || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199409L))
 # define __USE_ISOC95	1
 #endif
 
+/* This is to enable compatibility for ISO C++11.
+
+   So far g++ does not provide a macro.  Check the temporary macro for
+   now, too.  */
+#if ((defined __cplusplus && __cplusplus >= 201103L)			      \
+     || defined __GXX_EXPERIMENTAL_CXX0X__)
+# define __USE_ISOCXX11	1
+#endif
+
 /* If none of the ANSI/POSIX macros are defined, use POSIX.1 and POSIX.2
    (and IEEE Std 1003.1b-1993 unless _XOPEN_SOURCE is defined).  */
 #if ((!defined __STRICT_ANSI__ || (_XOPEN_SOURCE - 0) >= 500) && \
diff --git a/libio/stdio.h b/libio/stdio.h
index 8e23903c25..b39202879c 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -628,12 +628,18 @@ __BEGIN_NAMESPACE_STD
 extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
      __wur;
 
+#ifndef __USE_ISOC11
 /* Get a newline-terminated string from stdin, removing the newline.
    DO NOT USE THIS FUNCTION!!  There is no limit on how much it will read.
 
+   The function has been officially removed in ISO C11.  This opportunity
+   is used to also remove it from the GNU feature list.  It is now only
+   available when explicitly using an old ISO C, Unix, or POSIX standard.
+
    This function is a possible cancellation point and therefore not
    marked with __THROW.  */
-extern char *gets (char *__s) __wur;
+extern char *gets (char *__s) __wur __attribute_deprecated__;
+#endif
 __END_NAMESPACE_STD
 
 #ifdef __USE_GNU
diff --git a/malloc/Versions b/malloc/Versions
index cf0b1e559a..7ca9bdf25f 100644
--- a/malloc/Versions
+++ b/malloc/Versions
@@ -58,6 +58,9 @@ libc {
   GLIBC_2.10 {
     malloc_info;
   }
+  GLIBC_2.16 {
+    aligned_alloc;
+  }
   GLIBC_PRIVATE {
     # Internal startup hook for libpthread.
     __libc_malloc_pthread_startup;
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 8608083adb..300e879b8c 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -3124,6 +3124,8 @@ public_mEMALIGn(size_t alignment, size_t bytes)
 	 ar_ptr == arena_for_chunk(mem2chunk(p)));
   return p;
 }
+/* For ISO C11.  */
+weak_alias (public_mEMALIGn, aligned_alloc)
 libc_hidden_def (public_mEMALIGn)
 
 void*
diff --git a/stdio-common/tst-gets.c b/stdio-common/tst-gets.c
index 87786f5b71..463f345e0e 100644
--- a/stdio-common/tst-gets.c
+++ b/stdio-common/tst-gets.c
@@ -1,5 +1,5 @@
 /* Tests for gets.
-   Copyright (C) 2001 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
 
@@ -21,6 +21,11 @@
 #include <stdio.h>
 #include <string.h>
 
+/* The <stdio.h> header does not include the declaration for gets
+   anymore when compiling with _GNU_SOURCE.  Provide a copy here.  */
+extern char *gets (char *__s)