merge uClibc git master

20 files changed, 495 insertions, 117 deletions

diff --git a/include/atomic.h b/include/atomic.h
index 307704cba..3680d8714 100644
--- a/include/atomic.h
+++ b/include/atomic.h
@@ -1,5 +1,5 @@
 /* Internal macros for atomic operations for GNU C Library.
-   Copyright (C) 2002-2006, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2002-2015 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
 
@@ -32,7 +32,7 @@
      the multi-thread case.  The interfaces have the prefix
      "catomic_".
 
-   - support functions like barriers.  They also have the preifx
+   - support functions like barriers.  They also have the prefix
      "atomic_".
 
    Architectures must provide a few lowlevel macros (the compare
@@ -198,8 +198,12 @@
 
 
 /* Add VALUE to *MEM and return the old value of *MEM.  */
-#ifndef atomic_exchange_and_add
-# define atomic_exchange_and_add(mem, value) \
+#ifndef atomic_exchange_and_add_acq
+# ifdef atomic_exchange_and_add
+#  define atomic_exchange_and_add_acq(mem, value) \
+  atomic_exchange_and_add (mem, value)
+# else
+#  define atomic_exchange_and_add_acq(mem, value) \
   ({ __typeof (*(mem)) __atg6_oldval;					      \
      __typeof (mem) __atg6_memp = (mem);				      \
      __typeof (*(mem)) __atg6_value = (value);				      \
@@ -213,8 +217,18 @@
 						   __atg6_oldval), 0));	      \
 									      \
      __atg6_oldval; })
+# endif
 #endif
 
+#ifndef atomic_exchange_and_add_rel
+# define atomic_exchange_and_add_rel(mem, value) \
+  atomic_exchange_and_add_acq(mem, value)
+#endif
+
+#ifndef atomic_exchange_and_add
+# define atomic_exchange_and_add(mem, value) \
+  atomic_exchange_and_add_acq(mem, value)
+#endif
 
 #ifndef catomic_exchange_and_add
 # define catomic_exchange_and_add(mem, value) \
@@ -528,6 +542,219 @@
   ({ __typeof (x) __x; __asm__ ("" : "=r" (__x) : "0" (x)); __x; })
 #endif
 
+/* This is equal to 1 iff the architecture supports 64b atomic operations.  */
+#define __HAVE_64B_ATOMICS 0 /* TODO: not yet used - Add these to arch bits! */
+#ifndef __HAVE_64B_ATOMICS
+#error Unable to determine if 64-bit atomics are present.
+#endif
+
+/* The following functions are a subset of the atomic operations provided by
+   C11.  Usually, a function named atomic_OP_MO(args) is equivalent to C11's
+   atomic_OP_explicit(args, memory_order_MO); exceptions noted below.  */
+
+/* Each arch can request to use compiler built-ins for C11 atomics.  If it
+   does, all atomics will be based on these.  */
+#if 0 /* not yet used USE_ATOMIC_COMPILER_BUILTINS */
+
+/* We require 32b atomic operations; some archs also support 64b atomic
+   operations.  */
+void __atomic_link_error (void);
+# if __HAVE_64B_ATOMICS == 1
+#  define __atomic_check_size(mem) \
+   if ((sizeof (*mem) != 4) && (sizeof (*mem) != 8))			      \
+     __atomic_link_error ();
+# else
+#  define __atomic_check_size(mem) \
+   if (sizeof (*mem) != 4)						      \
+     __atomic_link_error ();
+# endif
+
+# define atomic_thread_fence_acquire() \
+  __atomic_thread_fence (__ATOMIC_ACQUIRE)
+# define atomic_thread_fence_release() \
+  __atomic_thread_fence (__ATOMIC_RELEASE)
+# define atomic_thread_fence_seq_cst() \
+  __atomic_thread_fence (__ATOMIC_SEQ_CST)
+
+# define atomic_load_relaxed(mem) \
+  ({ __atomic_check_size((mem)); __atomic_load_n ((mem), __ATOMIC_RELAXED); })
+# define atomic_load_acquire(mem) \
+  ({ __atomic_check_size((mem)); __atomic_load_n ((mem), __ATOMIC_ACQUIRE); })
+
+# define atomic_store_relaxed(mem, val) \
+  do {									      \
+    __atomic_check_size((mem));						      \
+    __atomic_store_n ((mem), (val), __ATOMIC_RELAXED);			      \
+  } while (0)
+# define atomic_store_release(mem, val) \
+  do {									      \
+    __atomic_check_size((mem));						      \
+    __atomic_store_n ((mem), (val), __ATOMIC_RELEASE);			      \
+  } while (0)
+
+/* On failure, this CAS has memory_order_relaxed semantics.  */
+# define atomic_compare_exchange_weak_relaxed(mem, expected, desired) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_compare_exchange_n ((mem), (expected), (desired), 1,		      \
+    __ATOMIC_RELAXED, __ATOMIC_RELAXED); })
+# define atomic_compare_exchange_weak_acquire(mem, expected, desired) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_compare_exchange_n ((mem), (expected), (desired), 1,		      \
+    __ATOMIC_ACQUIRE, __ATOMIC_RELAXED); })
+# define atomic_compare_exchange_weak_release(mem, expected, desired) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_compare_exchange_n ((mem), (expected), (desired), 1,		      \
+    __ATOMIC_RELEASE, __ATOMIC_RELAXED); })
+
+# define atomic_exchange_acquire(mem, desired) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_exchange_n ((mem), (desired), __ATOMIC_ACQUIRE); })
+# define atomic_exchange_release(mem, desired) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_exchange_n ((mem), (desired), __ATOMIC_RELEASE); })
+
+# define atomic_fetch_add_relaxed(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_add ((mem), (operand), __ATOMIC_RELAXED); })
+# define atomic_fetch_add_acquire(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_add ((mem), (operand), __ATOMIC_ACQUIRE); })
+# define atomic_fetch_add_release(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_add ((mem), (operand), __ATOMIC_RELEASE); })
+# define atomic_fetch_add_acq_rel(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_add ((mem), (operand), __ATOMIC_ACQ_REL); })
+
+# define atomic_fetch_and_acquire(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_and ((mem), (operand), __ATOMIC_ACQUIRE); })
+
+# define atomic_fetch_or_relaxed(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_or ((mem), (operand), __ATOMIC_RELAXED); })
+# define atomic_fetch_or_acquire(mem, operand) \
+  ({ __atomic_check_size((mem));					      \
+  __atomic_fetch_or ((mem), (operand), __ATOMIC_ACQUIRE); })
+
+#else /* !USE_ATOMIC_COMPILER_BUILTINS  */
+
+/* By default, we assume that read, write, and full barriers are equivalent
+   to acquire, release, and seq_cst barriers.  Archs for which this does not
+   hold have to provide custom definitions of the fences.  */
+# ifndef atomic_thread_fence_acquire
+#  define atomic_thread_fence_acquire() atomic_read_barrier ()
+# endif
+# ifndef atomic_thread_fence_release
+#  define atomic_thread_fence_release() atomic_write_barrier ()
+# endif
+# ifndef atomic_thread_fence_seq_cst
+#  define atomic_thread_fence_seq_cst() atomic_full_barrier ()
+# endif
+
+# ifndef atomic_load_relaxed
+#  define atomic_load_relaxed(mem) \
+   ({ __typeof (*(mem)) __atg100_val;					      \
+   __asm__ ("" : "=r" (__atg100_val) : "0" (*(mem)));			      \
+   __atg100_val; })
+# endif
+# ifndef atomic_load_acquire
+#  define atomic_load_acquire(mem) \
+   ({ __typeof (*(mem)) __atg101_val = atomic_load_relaxed (mem);	      \
+   atomic_thread_fence_acquire ();					      \
+   __atg101_val; })
+# endif
+
+# ifndef atomic_store_relaxed
+/* XXX Use inline asm here?  */
+#  define atomic_store_relaxed(mem, val) do { *(mem) = (val); } while (0)
+# endif
+# ifndef atomic_store_release
+#  define atomic_store_release(mem, val) \
+   do {									      \
+     atomic_thread_fence_release ();					      \
+     atomic_store_relaxed ((mem), (val));				      \
+   } while (0)
+# endif
+
+/* On failure, this CAS has memory_order_relaxed semantics.  */
+/* XXX This potentially has one branch more than necessary, but archs
+   currently do not define a CAS that returns both the previous value and
+   the success flag.  */
+# ifndef atomic_compare_exchange_weak_acquire
+#  define atomic_compare_exchange_weak_acquire(mem, expected, desired) \
+   ({ __typeof (*(expected)) __atg102_expected = *(expected);		      \
+   *(expected) =							      \
+     atomic_compare_and_exchange_val_acq ((mem), (desired), *(expected));     \
+   *(expected) == __atg102_expected; })
+# endif
+# ifndef atomic_compare_exchange_weak_relaxed
+/* XXX Fall back to CAS with acquire MO because archs do not define a weaker
+   CAS.  */
+#  define atomic_compare_exchange_weak_relaxed(mem, expected, desired) \
+   atomic_compare_exchange_weak_acquire ((mem), (expected), (desired))
+# endif
+# ifndef atomic_compare_exchange_weak_release
+#  define atomic_compare_exchange_weak_release(mem, expected, desired) \
+   ({ __typeof (*(expected)) __atg103_expected = *(expected);		      \
+   *(expected) =							      \
+     atomic_compare_and_exchange_val_rel ((mem), (desired), *(expected));     \
+   *(expected) == __atg103_expected; })
+# endif
+
+# ifndef atomic_exchange_acquire
+#  define atomic_exchange_acquire(mem, val) \
+   atomic_exchange_acq ((mem), (val))
+# endif
+# ifndef atomic_exchange_release
+#  define atomic_exchange_release(mem, val) \
+   atomic_exchange_rel ((mem), (val))
+# endif
+
+# ifndef atomic_fetch_add_acquire
+#  define atomic_fetch_add_acquire(mem, operand) \
+   atomic_exchange_and_add_acq ((mem), (operand))
+# endif
+# ifndef atomic_fetch_add_relaxed
+/* XXX Fall back to acquire MO because the MO semantics of
+   atomic_exchange_and_add are not documented; the generic version falls back
+   to atomic_exchange_and_add_acq if atomic_exchange_and_add is not defined,
+   and vice versa.  */
+#  define atomic_fetch_add_relaxed(mem, operand) \
+   atomic_fetch_add_acquire ((mem), (operand))
+# endif
+# ifndef atomic_fetch_add_release
+#  define atomic_fetch_add_release(mem, operand) \
+   atomic_exchange_and_add_rel ((mem), (operand))
+# endif
+# ifndef atomic_fetch_add_acq_rel
+#  define atomic_fetch_add_acq_rel(mem, operand) \
+   ({ atomic_thread_fence_release ();					      \
+   atomic_exchange_and_add_acq ((mem), (operand)); })
+# endif
+
+/* XXX The default for atomic_and_val has acquire semantics, but this is not
+   documented.  */
+# ifndef atomic_fetch_and_acquire
+#  define atomic_fetch_and_acquire(mem, operand) \
+   atomic_and_val ((mem), (operand))
+# endif
+
+/* XXX The default for atomic_or_val has acquire semantics, but this is not
+   documented.  */
+# ifndef atomic_fetch_or_acquire
+#  define atomic_fetch_or_acquire(mem, operand) \
+   atomic_or_val ((mem), (operand))
+# endif
+/* XXX Fall back to acquire MO because archs do not define a weaker
+   atomic_or_val.  */
+# ifndef atomic_fetch_or_relaxed
+#  define atomic_fetch_or_relaxed(mem, operand) \
+   atomic_fetch_or_acquire ((mem), (operand))
+# endif
+
+#endif /* !USE_ATOMIC_COMPILER_BUILTINS  */
+
 
 #ifndef atomic_delay
 # define atomic_delay() do { /* nothing */ } while (0)
diff --git a/include/complex.h b/include/complex.h
index 91efc0d2b..ed7e502b7 100644
--- a/include/complex.h
+++ b/include/complex.h
@@ -79,6 +79,7 @@ __BEGIN_DECLS
 #endif
 #include <bits/cmathcalls.h>
 #undef	_Mdouble_
+#undef	_Mfloat_
 #undef	__MATH_PRECNAME
 
 /* And the long double versions.  It is non-critical to define them
@@ -97,6 +98,7 @@ __BEGIN_DECLS
 # include <bits/cmathcalls.h>
 #endif
 #undef	_Mdouble_
+#undef	_Mlong_double_
 #undef	__MATH_PRECNAME
 #undef	__MATHDECL_1
 #undef	__MATHDECL
diff --git a/include/dlfcn.h b/include/dlfcn.h
index 41d0d6fa4..241ec5480 100644
--- a/include/dlfcn.h
+++ b/include/dlfcn.h
@@ -55,11 +55,11 @@ __BEGIN_DECLS
 
 /* Open the shared object FILE and map it in; return a handle that can be
    passed to `dlsym' to get symbol values from it.  */
-extern void *dlopen (const char *__file, int __mode) __THROW;
+extern void *dlopen (const char *__file, int __mode) __THROWNL;
 
 /* Unmap and close a shared object opened by `dlopen'.
    The handle cannot be used again after calling `dlclose'.  */
-extern int dlclose (void *__handle) __THROW __nonnull ((1));
+extern int dlclose (void *__handle) __THROWNL __nonnull ((1));
 
 /* Find the run-time address in the shared object HANDLE refers to
    of the symbol called NAME.  */
@@ -68,7 +68,7 @@ extern void *dlsym (void *__restrict __handle,
 
 #if 0 /*def __USE_GNU*/
 /* Like `dlopen', but request object to be allocated in a new namespace.  */
-extern void *dlmopen (Lmid_t __nsid, const char *__file, int __mode) __THROW;
+extern void *dlmopen (Lmid_t __nsid, const char *__file, int __mode) __THROWNL;
 
 /* Find the run-time address in the shared object HANDLE refers to
    of the symbol called NAME with VERSION.  */
diff --git a/include/fcntl.h b/include/fcntl.h
index 04fc2c06d..11000ddb5 100644
--- a/include/fcntl.h
+++ b/include/fcntl.h
@@ -221,7 +221,7 @@ extern int posix_fadvise64 (int __fd, __off64_t __offset, __off64_t __len,
 
 /* Reserve storage for the data of the file associated with FD.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 # ifndef __USE_FILE_OFFSET64
 extern int posix_fallocate (int __fd, __off_t __offset, __off_t __len);
diff --git a/include/iconv.h b/include/iconv.h
index d850de56e..5ab4c6cb9 100644
--- a/include/iconv.h
+++ b/include/iconv.h
@@ -36,7 +36,7 @@ typedef void *iconv_t;
 /* Allocate descriptor for code conversion from codeset FROMCODE to
    codeset TOCODE.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern iconv_t iconv_open (const char *__tocode, const char *__fromcode);
 
@@ -50,7 +50,7 @@ extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
 
 /* Free resources allocated for descriptor CD for code conversion.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int iconv_close (iconv_t __cd);
 
diff --git a/include/internal/utmp.h b/include/internal/utmp.h
new file mode 100644
index 000000000..49f96b4d8
--- /dev/null
+++ b/include/internal/utmp.h
@@ -0,0 +1,92 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * internal helper for utmp and utmpx handling
+ *
+ * Copyright (C) 2015 by Bernhard Reutner-Fischer
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+#ifndef __INTERNAL_UTMP_H
+#define __INTERNAL_UTMP_H
+
+#include <utmpx.h>
+#include <utmp.h>
+
+/* Note: _PATH_UTMPX == _PATH_UTMP */
+
+#if (defined __UCLIBC_HAS_UTMPX__ && defined __UCLIBC_HAS_UTMP__) \
+	|| !defined __UCLIBC_HAS_UTMP__
+/* implement the X and alias the non-X */
+# define __set_unlocked __setutxent_unlocked
+# define set setutxent
+# define __get_unlocked __getutxent_unlocked
+# define get getutxent
+# define end endutxent
+# define __getid_unlocked __getutxid_unlocked
+# define getid getutxid
+# define getline getutxline
+# define putline pututxline
+# define name utmpxname
+# define updw updwtmpx
+# define UT utmpx
+# ifndef __DEFAULT_PATH_UTMP
+#  define __DEFAULT_PATH_UTMP _PATH_UTMPX
+# endif
+# if defined __UCLIBC_HAS_UTMP__
+#  define other(n,a) strong_alias_untyped(n,a)
+# else
+#  define other(n,a) /* nothing */
+# endif
+#elif defined __UCLIBC_HAS_UTMP__
+# define __set_unlocked __setutent_unlocked
+# define set setutent
+# define __get_unlocked __getutent_unlocked
+# define get getutent
+# define end endutent
+# define __getid_unlocked __getutid_unlocked
+# define getid getutid
+# define getline getutline
+# define putline pututline
+# define name utmpname
+# define updw updwtmp
+# define UT utmp
+# ifndef __DEFAULT_PATH_UTMP
+#  define __DEFAULT_PATH_UTMP _PATH_UTMP
+# endif
+# define other(n,a) /* nothing */
+#else
+#error You are supposed to either have UTMP or UTMPX or both here
+#endif
+
+/* not used in libc_hidden_proto(setutxent) */
+/* not used in libc_hidden_proto(endutxent) */
+/* not used in libc_hidden_proto(getutxent) */
+/* not used in libc_hidden_proto(getutxid) */
+/* not used in libc_hidden_proto(getutxline) */
+/* not used in libc_hidden_proto(pututxline) */
+/* not used in libc_hidden_proto(utmpxname) */
+/* not used in libc_hidden_proto(updwtmpx) */
+
+/* not used in libc_hidden_proto(setutent) */
+/* not used in libc_hidden_proto(endutent) */
+/* not used in libc_hidden_proto(getutent) */
+/* not used in libc_hidden_proto(getutid) */
+/* not used in libc_hidden_proto(getutline) */
+/* not used in libc_hidden_proto(pututline) */
+/* not used in libc_hidden_proto(utmpname) */
+/* not used in libc_hidden_proto(updwtmp) */
+
+#ifdef IS_IN_libutil
+# if (defined __UCLIBC_HAS_UTMPX__ && defined __UCLIBC_HAS_UTMP__) \
+	|| !defined __UCLIBC_HAS_UTMP__
+	/* monkey-patch to use the POSIX interface */
+#  define setutent setutxent
+#  define getutline getutxline
+#  define pututline pututxline
+#  define endutent endutxent
+#  define updwtmp updwtmpx
+# endif
+#endif /* IS_IN_libutil */
+
+#endif /* __INTERNAL_UTMP_H */
+
diff --git a/include/malloc.h b/include/malloc.h
index 3209fb070..a289c9317 100644
--- a/include/malloc.h
+++ b/include/malloc.h
@@ -132,6 +132,7 @@ extern __malloc_ptr_t valloc __MALLOC_P ((size_t __size)) __attribute_malloc__;
 
 #ifdef __MALLOC_STANDARD__
 
+# ifdef __USE_SVID
 /* SVID2/XPG mallinfo structure */
 struct mallinfo {
   int arena;    /* total space allocated from system */
@@ -149,10 +150,13 @@ struct mallinfo {
 /* Returns a copy of the updated current mallinfo. */
 extern struct mallinfo mallinfo __MALLOC_P ((void));
 libc_hidden_proto(mallinfo)
+# endif /* __USE_SVID */
 
+# ifdef __USE_GNU
 /* Release all but __pad bytes of freed top-most memory back to the
    system. Return 1 if successful, else 0. */
 extern int malloc_trim(size_t pad);
+# endif /* __USE_GNU */
 
 #include <stdio.h>
 /* Prints brief summary statistics to the specified file.
diff --git a/include/math.h b/include/math.h
index 40dd90ef0..c79af3f35 100644
--- a/include/math.h
+++ b/include/math.h
@@ -131,6 +131,7 @@ __BEGIN_DECLS
 # undef	_Mdouble_
 # undef _Mdouble_BEGIN_NAMESPACE
 # undef _Mdouble_END_NAMESPACE
+# undef _Mfloat_
 # undef	__MATH_PRECNAME
 # undef __MATH_maybe_libm_hidden_proto
 
@@ -178,6 +179,7 @@ extern long double __REDIRECT_NTH (nexttowardl, (long double __x, long double __
 #  undef _Mdouble_
 #  undef _Mdouble_BEGIN_NAMESPACE
 #  undef _Mdouble_END_NAMESPACE
+#  undef _Mlong_double_
 #  undef __MATH_PRECNAME
 #  undef __MATH_maybe_libm_hidden_proto
 
diff --git a/include/pty.h b/include/pty.h
index 26c3011c6..f23a260ae 100644
--- a/include/pty.h
+++ b/include/pty.h
@@ -32,6 +32,7 @@ __BEGIN_DECLS
    ends in AMASTER and ASLAVE.  */
 extern int openpty (int *__amaster, int *__aslave, char *__name,
 		    struct termios *__termp, struct winsize *__winp) __THROW;
+libutil_hidden_proto(openpty)
 
 /* Create child process and establish the slave pseudo terminal as the
    child's controlling terminal.  */
diff --git a/include/setjmp.h b/include/setjmp.h
index c9501379e..71c1d35cb 100644
--- a/include/setjmp.h
+++ b/include/setjmp.h
@@ -49,19 +49,20 @@ typedef struct __jmp_buf_tag jmp_buf[1];
 
 /* Store the calling environment in ENV, also saving the signal mask.
    Return 0.  */
-extern int setjmp (jmp_buf __env) __THROW;
+extern int setjmp (jmp_buf __env) __THROWNL;
 
 __END_NAMESPACE_STD
 
 /* Store the calling environment in ENV, also saving the
    signal mask if SAVEMASK is nonzero.  Return 0.
    This is the internal name for `sigsetjmp'.  */
-extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask) __THROW;
+extern int __sigsetjmp (struct __jmp_buf_tag __env[1], int __savemask)
+    __THROWNL;
 
 #ifndef	__FAVOR_BSD
 /* Store the calling environment in ENV, not saving the signal mask.
    Return 0.  */
-extern int _setjmp (struct __jmp_buf_tag __env[1]) __THROW;
+extern int _setjmp (struct __jmp_buf_tag __env[1]) __THROWNL;
 
 /* Do not save the signal mask.  This is equivalent to the `_setjmp'
    BSD function.  */
@@ -79,7 +80,7 @@ __BEGIN_NAMESPACE_STD
 /* Jump to the environment saved in ENV, making the
    `setjmp' call there return VAL, or 1 if VAL is 0.  */
 extern void longjmp (struct __jmp_buf_tag __env[1], int __val)
-     __THROW __attribute__ ((__noreturn__));
+     __THROWNL __attribute__ ((__noreturn__));
 
 __END_NAMESPACE_STD
 
@@ -88,7 +89,7 @@ __END_NAMESPACE_STD
    the signal mask.  But it is how ENV was saved that determines whether
    `longjmp' restores the mask; `_longjmp' is just an alias.  */
 extern void _longjmp (struct __jmp_buf_tag __env[1], int __val)
-     __THROW __attribute__ ((__noreturn__));
+     __THROWNL __attribute__ ((__noreturn__));
 #endif
 
 
@@ -107,16 +108,16 @@ typedef struct __jmp_buf_tag sigjmp_buf[1];
    Restore the signal mask if that sigsetjmp call saved it.
    This is just an alias `longjmp'.  */
 extern void siglongjmp (sigjmp_buf __env, int __val)
-     __THROW __attribute__ ((__noreturn__));
+     __THROWNL __attribute__ ((__noreturn__));
 #endif /* Use POSIX.  */
 
 __END_DECLS
 
 #ifdef _LIBC
-extern void __longjmp(__jmp_buf __env, int __val) attribute_noreturn;
+extern void __longjmp(__jmp_buf __env, int __val) __THROWNL attribute_noreturn;
 libc_hidden_proto(__longjmp)
-extern __typeof(longjmp) __libc_longjmp attribute_noreturn;
-extern __typeof(siglongjmp) __libc_siglongjmp attribute_noreturn;
+extern __typeof(longjmp) __libc_longjmp __THROWNL attribute_noreturn;
+extern __typeof(siglongjmp) __libc_siglongjmp __THROWNL attribute_noreturn;
 extern void _longjmp_unwind(jmp_buf __env, int __val);
 libc_hidden_proto(_longjmp_unwind)
 extern int __sigjmp_save(sigjmp_buf __env, int __savemask) attribute_hidden;
diff --git a/include/spawn.h b/include/spawn.h
index 95fff356f..3de375b41 100644
--- a/include/spawn.h
+++ b/include/spawn.h
@@ -66,15 +66,6 @@ typedef struct
 # define POSIX_SPAWN_USEVFORK		0x40
 #endif
 
-
-#define __POSIX_SPAWN_MASK (POSIX_SPAWN_RESETIDS		\
-			    | POSIX_SPAWN_SETPGROUP		\
-			    | POSIX_SPAWN_SETSIGDEF		\
-			    | POSIX_SPAWN_SETSIGMASK		\
-			    | POSIX_SPAWN_SETSCHEDPARAM		\
-			    | POSIX_SPAWN_SETSCHEDULER		\
-			    | POSIX_SPAWN_USEVFORK)
-
 __BEGIN_DECLS
 
 /* Spawn a new process executing PATH with the attributes describes in *ATTRP.
@@ -170,12 +161,27 @@ static inline
 int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
 				     short int __flags)
 {
+#ifdef POSIX_SPAWN_USEVFORK
+# define __POSIX_SPAWN_USEVFORK POSIX_SPAWN_USEVFORK
+#else
+# define __POSIX_SPAWN_USEVFORK 0
+#endif
+#define __POSIX_SPAWN_MASK (POSIX_SPAWN_RESETIDS		\
+			    | POSIX_SPAWN_SETPGROUP		\
+			    | POSIX_SPAWN_SETSIGDEF		\
+			    | POSIX_SPAWN_SETSIGMASK		\
+			    | POSIX_SPAWN_SETSCHEDPARAM		\
+			    | POSIX_SPAWN_SETSCHEDULER		\
+			    | __POSIX_SPAWN_USEVFORK)
+
   /* Check no invalid bits are set.  */
   if (__flags & ~__POSIX_SPAWN_MASK)
     return EINVAL;
 
   _attr->__flags = __flags;
   return 0;
+#undef __POSIX_SPAWN_USEVFORK
+#undef __POSIX_SPAWN_MASK
 }
 
 /* Get process group ID from the attribute structure.  */
diff --git a/include/stdio.h b/include/stdio.h
index 75c146482..9aae5abf4 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -157,7 +157,7 @@ libc_hidden_proto(renameat)
 __BEGIN_NAMESPACE_STD
 /* Create a temporary file and open it read/write.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 #ifndef __USE_FILE_OFFSET64
 extern FILE *tmpfile (void) __wur;
@@ -345,8 +345,8 @@ extern int printf (const char *__restrict __format, ...);
 libc_hidden_proto(printf)
 /* Write formatted output to S.  */
 extern int sprintf (char *__restrict __s,
-		    const char *__restrict __format, ...)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
+		    const char *__restrict __format, ...) __THROWNL
+     __attribute__ ((__format__ (__printf__, 2, 3)));
 libc_hidden_proto(sprintf)
 
 /* Write formatted output to S from argument list ARG.
@@ -363,8 +363,8 @@ libc_hidden_proto(vfprintf)
 extern int vprintf (const char *__restrict __format, __gnuc_va_list __arg);
 /* Write formatted output to S from argument list ARG.  */
 extern int vsprintf (char *__restrict __s, const char *__restrict __format,
-		     __gnuc_va_list __arg)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
+		     __gnuc_va_list __arg) __THROWNL
+     __attribute__ ((__format__ (__printf__, 2, 0)));
 __END_NAMESPACE_STD
 
 #if defined __USE_BSD || defined __USE_ISOC99 || defined __USE_UNIX98
@@ -372,12 +372,12 @@ __BEGIN_NAMESPACE_C99
 /* Maximum chars of output to write in MAXLEN.  */
 extern int snprintf (char *__restrict __s, size_t __maxlen,
 		     const char *__restrict __format, ...)
-     __THROW __attribute__ ((__format__ (__printf__, 3, 4)));
+     __THROWNL __attribute__ ((__format__ (__printf__, 3, 4)));
 libc_hidden_proto(snprintf)
 
 extern int vsnprintf (char *__restrict __s, size_t __maxlen,
 		      const char *__restrict __format, __gnuc_va_list __arg)
-     __THROW __attribute__ ((__format__ (__printf__, 3, 0)));
+     __THROWNL __attribute__ ((__format__ (__printf__, 3, 0)));
 libc_hidden_proto(vsnprintf)
 __END_NAMESPACE_C99
 #endif
@@ -387,26 +387,24 @@ __END_NAMESPACE_C99
    Store the address of the string in *PTR.  */
 extern int vasprintf (char **__restrict __ptr, const char *__restrict __f,
 		      __gnuc_va_list __arg)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
+     __THROWNL __attribute__ ((__format__ (__printf__, 2, 0))) __wur;
 libc_hidden_proto(vasprintf)
 #if 0 /* uClibc: disabled */
 extern int __asprintf (char **__restrict __ptr,
 		       const char *__restrict __fmt, ...)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
+     __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
 #endif
 extern int asprintf (char **__restrict __ptr,
 		     const char *__restrict __fmt, ...)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
+     __THROWNL __attribute__ ((__format__ (__printf__, 2, 3))) __wur;
 libc_hidden_proto(asprintf)
 #endif
 
 #ifdef __USE_XOPEN2K8
 /* Write formatted output to a file descriptor.
 
-   These functions are not part of POSIX and therefore no official
-   cancellation point.  But due to similarity with an POSIX interface
-   or due to the implementation they are cancellation points and
-   therefore not marked with __THROW.  */
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
 extern int vdprintf (int __fd, const char *__restrict __fmt,
 		     __gnuc_va_list __arg)
      __attribute__ ((__format__ (__printf__, 2, 0)));
@@ -570,12 +568,21 @@ extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
      __wur;
 libc_hidden_proto(fgets)
 
+#if !defined __USE_ISOC11 \
+    || (defined __cplusplus && __cplusplus <= 201103L)
 /* 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.
+   GCC defines _GNU_SOURCE when building C++ code and the function is still
+   in C++11, so it is also available for C++.
+
    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
@@ -628,21 +635,21 @@ libc_hidden_proto(getline)
 __BEGIN_NAMESPACE_STD
 /* Write a string to STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
 libc_hidden_proto(fputs)
 
 /* Write a string, followed by a newline, to stdout.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int puts (const char *__s);
 
 
 /* Push a character back onto the input buffer of STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int ungetc (int __c, FILE *__stream);
 libc_hidden_proto(ungetc)
@@ -650,14 +657,14 @@ libc_hidden_proto(ungetc)
 
 /* Read chunks of generic data from STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern size_t fread (void *__restrict __ptr, size_t __size,
 		     size_t __n, FILE *__restrict __stream) __wur;
 libc_hidden_proto(fread)
 /* Write chunks of generic data to STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern size_t fwrite (const void *__restrict __ptr, size_t __size,
 		      size_t __n, FILE *__restrict __s) __wur;
@@ -860,11 +867,11 @@ struct obstack;			/* See <obstack.h>.  */
 /* Write formatted output to an obstack.  */
 extern int obstack_printf (struct obstack *__restrict __obstack,
 			   const char *__restrict __format, ...)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 3)));
+     __THROWNL __attribute__ ((__format__ (__printf__, 2, 3)));
 extern int obstack_vprintf (struct obstack *__restrict __obstack,
 			    const char *__restrict __format,
 			    __gnuc_va_list __args)
-     __THROW __attribute__ ((__format__ (__printf__, 2, 0)));
+     __THROWNL __attribute__ ((__format__ (__printf__, 2, 0)));
 libc_hidden_proto(obstack_vprintf)
 #endif /* USE_GNU && UCLIBC_HAS_OBSTACK.  */
 
diff --git a/include/stdlib.h b/include/stdlib.h
index b2d70204e..809256d0c 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -38,7 +38,7 @@ __BEGIN_DECLS
 #ifndef __need_malloc_and_calloc
 #define	_STDLIB_H	1
 
-#if defined __USE_XOPEN && !defined _SYS_WAIT_H
+#if (defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined _SYS_WAIT_H
 /* XPG requires a few symbols from <sys/wait.h> being defined.  */
 # include <bits/waitflags.h>
 # include <bits/waitstatus.h>
@@ -486,11 +486,11 @@ extern int lcong48_r (unsigned short int __param[7],
 __BEGIN_NAMESPACE_STD
 /* Allocate SIZE bytes of memory.  */
 extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
-/* We want the malloc symbols overridable at runtime
- * libc_hidden_proto(malloc) */
+/* We want the malloc symbol overridable at runtime, do not hide it! */
 /* Allocate NMEMB elements of SIZE bytes each, all initialized to 0.  */
 extern void *calloc (size_t __nmemb, size_t __size)
      __THROW __attribute_malloc__ __wur;
+/* We want the calloc symbol overridable at runtime, do not hide it! */
 __END_NAMESPACE_STD
 #endif
 
@@ -503,8 +503,10 @@ __BEGIN_NAMESPACE_STD
    between objects pointed by the old and new pointers.  */
 extern void *realloc (void *__ptr, size_t __size)
      __THROW __wur;
+/* We want the realloc symbol overridable at runtime, do not hide it! */
 /* Free a block allocated by `malloc', `realloc' or `calloc'.  */
 extern void free (void *__ptr) __THROW;
+/* We want the free symbol overridable at runtime, do not hide it! */
 __END_NAMESPACE_STD
 
 #if 0 /*def	__USE_MISC*/
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index 6f81b6a7c..4da981f9a 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -37,20 +37,33 @@
 
 #ifdef __GNUC__
 
+/* All functions, except those with callbacks or those that
+   synchronize memory, are leaf functions.  */
+# if __GNUC_PREREQ (4, 6) && !defined _LIBC
+#  define __LEAF , __leaf__
+#  define __LEAF_ATTR __attribute__ ((__leaf__))
+# else
+#  define __LEAF
+#  define __LEAF_ATTR
+# endif
+
 /* GCC can always grok prototypes.  For C++ programs we add throw()
    to help it optimize the function calls.  But this works only with
    gcc 2.8.x and egcs.  For gcc 3.2 and up we even mark C functions
    as non-throwing using a function attribute since programs can use
    the -fexceptions options for C code as well.  */
 # if !defined __cplusplus && __GNUC_PREREQ (3, 3)
-#  define __THROW	__attribute__ ((__nothrow__))
-#  define __NTH(fct)	__attribute__ ((__nothrow__)) fct
+#  define __THROW	__attribute__ ((__nothrow__ __LEAF))
+#  define __THROWNL	__attribute__ ((__nothrow__))
+#  define __NTH(fct)	__attribute__ ((__nothrow__ __LEAF)) fct
 # else
 #  if defined __cplusplus && __GNUC_PREREQ (2,8)
 #   define __THROW	throw ()
-#   define __NTH(fct)	fct throw ()
+#   define __THROWNL	throw ()
+#   define __NTH(fct)	__LEAF_ATTR fct throw ()
 #  else
 #   define __THROW
+#   define __THROWNL
 #   define __NTH(fct)	fct
 #  endif
 # endif
@@ -60,6 +73,7 @@
 # define __inline		/* No inline functions.  */
 
 # define __THROW
+# define __THROWNL
 # define __NTH(fct)	fct
 
 #endif	/* GCC.  */
@@ -165,9 +179,13 @@
 # ifdef __cplusplus
 #  define __REDIRECT_NTH(name, proto, alias) \
      name proto __THROW __asm__ (__ASMNAME (#alias))
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __THROWNL __asm__ (__ASMNAME (#alias))
 # else
 #  define __REDIRECT_NTH(name, proto, alias) \
      name proto __asm__ (__ASMNAME (#alias)) __THROW
+#  define __REDIRECT_NTHNL(name, proto, alias) \
+     name proto __asm__ (__ASMNAME (#alias)) __THROWNL
 # endif
 # define __ASMNAME(cname)  __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
 # define __ASMNAME2(prefix, cname) __STRING (prefix) cname
diff --git a/include/sys/sysmacros.h b/include/sys/sysmacros.h
index 7a5635edd..3addb7500 100644
--- a/include/sys/sysmacros.h
+++ b/include/sys/sysmacros.h
@@ -21,35 +21,39 @@
 
 #include <features.h>
 
+__BEGIN_DECLS
+
 /* If the compiler does not know long long it is out of luck.  We are
    not going to hack weird hacks to support the dev_t representation
    they need.  */
-#if 1 /*def __GLIBC_HAVE_LONG_LONG    uClibc note: always enable */
+
 __extension__
-static __inline unsigned int gnu_dev_major (unsigned long long int __dev)
-     __THROW;
+extern unsigned int gnu_dev_major (unsigned long long int __dev)
+     __THROW __attribute__ ((__const__));
+libc_hidden_proto(gnu_dev_major)
 __extension__
-static __inline unsigned int gnu_dev_minor (unsigned long long int __dev)
-     __THROW;
+extern unsigned int gnu_dev_minor (unsigned long long int __dev)
+     __THROW __attribute__ ((__const__));
+libc_hidden_proto(gnu_dev_minor)
 __extension__
-static __inline unsigned long long int gnu_dev_makedev (unsigned int __major,
+extern unsigned long long int gnu_dev_makedev (unsigned int __major,
 							unsigned int __minor)
-     __THROW;
+     __THROW __attribute__ ((__const__));
 
-# if defined __GNUC__ && __GNUC__ >= 2
-__extension__ static __inline unsigned int
+# ifdef __USE_EXTERN_INLINES
+__extension__ __extern_inline __attribute__ ((__const__)) unsigned int
 __NTH (gnu_dev_major (unsigned long long int __dev))
 {
   return ((__dev >> 8) & 0xfff) | ((unsigned int) (__dev >> 32) & ~0xfff);
 }
 
-__extension__ static __inline unsigned int
+__extension__ __extern_inline __attribute__ ((__const__)) unsigned int
 __NTH (gnu_dev_minor (unsigned long long int __dev))
 {
   return (__dev & 0xff) | ((unsigned int) (__dev >> 12) & ~0xff);
 }
 
-__extension__ static __inline unsigned long long int
+__extension__ __extern_inline __attribute__ ((__const__)) unsigned long long int
 __NTH (gnu_dev_makedev (unsigned int __major, unsigned int __minor))
 {
   return ((__minor & 0xff) | ((__major & 0xfff) << 8)
@@ -57,12 +61,11 @@ __NTH (gnu_dev_makedev (unsigned int __major, unsigned int __minor))
 	  | (((unsigned long long int) (__major & ~0xfff)) << 32));
 }
 # endif
-
+__END_DECLS
 
 /* Access the functions with their traditional names.  */
 # define major(dev) gnu_dev_major (dev)
 # define minor(dev) gnu_dev_minor (dev)
 # define makedev(maj, min) gnu_dev_makedev (maj, min)
-#endif
 
 #endif /* sys/sysmacros.h */
diff --git a/include/sys/wait.h b/include/sys/wait.h
index b3c2b973a..f7a420b93 100644
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@@ -28,10 +28,9 @@
 __BEGIN_DECLS
 
 #include <signal.h>
-#include <sys/resource.h>
 
 /* These macros could also be defined in <stdlib.h>.  */
-#if !defined _STDLIB_H || !defined __USE_XOPEN
+#if !defined _STDLIB_H || (!defined __USE_XOPEN && !defined __USE_XOPEN2K8)
 /* This will define the `W*' macros for the flag
    bits to `waitpid', `wait3', and `wait4'.  */
 # include <bits/waitflags.h>
@@ -97,7 +96,7 @@ typedef union
 #endif
 
 /* The following values are used by the `waitid' function.  */
-#if defined __USE_SVID || defined __USE_XOPEN
+#if defined __USE_SVID || defined __USE_XOPEN || defined __USE_XOPEN2K8
 typedef enum
 {
   P_ALL,		/* Wait for any child.  */
@@ -141,9 +140,15 @@ extern __typeof(waitpid) __waitpid_nocancel attribute_hidden;
 libc_hidden_proto(waitpid)
 #endif
 
-#if defined __USE_SVID || defined __USE_XOPEN
+#if defined __USE_SVID || defined __USE_XOPEN || defined __USE_XOPEN2K8
+# ifndef __id_t_defined
+#  include <bits/types.h>
+	typedef __id_t id_t;
+#  define __id_t_defined
+# endif
 # define __need_siginfo_t
 # include <bits/siginfo.h>
+
 /* Wait for a childing matching IDTYPE and ID to change the status and
    place appropriate information in *INFOP.
    If IDTYPE is P_PID, match any process whose process ID is ID.
@@ -160,19 +165,20 @@ extern int waitid (idtype_t __idtype, __id_t __id, siginfo_t *__infop,
 #endif
 
 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
+struct rusage;
 /* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
    return its process ID.  For errors return (pid_t) -1.  If USAGE is not
    nil, store information about the child's resource usage there.  If the
    WUNTRACED bit is set in OPTIONS, return status for stopped children;
    otherwise don't.  */
 extern __pid_t wait3 (__WAIT_STATUS __stat_loc, int __options,
-		      struct rusage * __usage) __THROW;
+		      struct rusage * __usage) __THROWNL;
 #endif
 
 #ifdef __USE_BSD
 /* PID is like waitpid.  Other args are like wait3.  */
 extern __pid_t wait4 (__pid_t __pid, __WAIT_STATUS __stat_loc, int __options,
-		      struct rusage *__usage) __THROW;
+		      struct rusage *__usage) __THROWNL;
 #endif /* Use BSD.  */
 
 #ifdef _LIBC
diff --git a/include/ucontext.h b/include/ucontext.h
index f11db7794..4ce114ef1 100644
--- a/include/ucontext.h
+++ b/include/ucontext.h
@@ -31,15 +31,15 @@
 __BEGIN_DECLS
 
 /* Get user context and store it in variable pointed to by UCP.  */
-extern int getcontext (ucontext_t *__ucp) __THROW;
+extern int getcontext (ucontext_t *__ucp) __THROWNL;
 
 /* Set user context from information of variable pointed to by UCP.  */
-extern int setcontext (const ucontext_t *__ucp) __THROW;
+extern int setcontext (const ucontext_t *__ucp) __THROWNL;
 
 /* Save current context in context variable pointed to by OUCP and set
    context from variable pointed to by UCP.  */
 extern int swapcontext (ucontext_t *__restrict __oucp,
-			const ucontext_t *__restrict __ucp) __THROW;
+			const ucontext_t *__restrict __ucp) __THROWNL;
 
 /* Manipulate user context UCP to continue with calling functions FUNC
    and the ARGC-1 parameters following ARGC when the context is used
diff --git a/include/unistd.h b/include/unistd.h
index 967e058a3..3793d2d3e 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -206,7 +206,7 @@ __BEGIN_DECLS
 #include <bits/uClibc_posix_opt.h>
 
 /* Get the environment definitions from Unix98.  */
-#ifdef __USE_UNIX98
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
 # include <bits/environments.h>
 #endif
 
@@ -266,7 +266,7 @@ typedef __pid_t pid_t;
 # endif
 #endif	/* X/Open */
 
-#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
+#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
 # ifndef __intptr_t_defined
 typedef __intptr_t intptr_t;
 #  define __intptr_t_defined
@@ -387,7 +387,7 @@ extern __typeof(write) __write_nocancel attribute_hidden;
 libc_hidden_proto(write)
 #endif
 
-#ifdef __USE_UNIX98
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K8
 # ifndef __USE_FILE_OFFSET64
 /* Read NBYTES into BUF from FD at the given position OFFSET without
    changing the file pointer.  Return the number read, -1 for errors
@@ -469,8 +469,9 @@ libc_hidden_proto(alarm)
 extern unsigned int sleep (unsigned int __seconds);
 libc_hidden_proto(sleep)
 
-#if (defined __USE_BSD || defined __USE_XOPEN_EXTENDED) \
-	&& defined __UCLIBC_SUSV3_LEGACY__
+#if (defined __USE_BSD \
+		|| (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8) \
+	) && defined __UCLIBC_SUSV3_LEGACY__
 /* Set an alarm to go off (generating a SIGALRM signal) in VALUE
    microseconds.  If INTERVAL is nonzero, when the alarm goes off, the
    timer is reset to go off every INTERVAL microseconds thereafter.
@@ -500,7 +501,7 @@ extern int chown (const char *__file, __uid_t __owner, __gid_t __group)
      __THROW __nonnull ((1)) __wur;
 libc_hidden_proto(chown)
 
-#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 /* Change the owner and group of the file that FD is open on.  */
 extern int fchown (int __fd, __uid_t __owner, __gid_t __group) __THROW __wur;
 
@@ -525,7 +526,7 @@ libc_hidden_proto(fchownat)
 extern int chdir (const char *__path) __THROW __nonnull ((1)) __wur;
 libc_hidden_proto(chdir)
 
-#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 /* Change the process's working directory to the one FD is open on.  */
 extern int fchdir (int __fd) __THROW __wur;
 libc_hidden_proto(fchdir)
@@ -548,7 +549,7 @@ libc_hidden_proto(getcwd)
 extern char *get_current_dir_name (void) __THROW;
 #endif
 
-#if 0 /*defined __USE_BSD || defined __USE_XOPEN_EXTENDED*/
+#if 0 /*defined __USE_BSD || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8)*/
 /* Put the absolute pathname of the current working directory in BUF.
    If successful, return BUF.  If not, put an error message in
    BUF and return NULL.  BUF should be at least PATH_MAX bytes long.  */
@@ -581,52 +582,53 @@ extern char **environ;
 /* Replace the current process, executing PATH with arguments ARGV and
    environment ENVP.  ARGV and ENVP are terminated by NULL pointers.  */
 extern int execve (const char *__path, char *const __argv[],
-		   char *const __envp[]) __THROW __nonnull ((1));
+		   char *const __envp[]) __THROW __nonnull ((1, 2));
 libc_hidden_proto(execve)
 
 #if 0 /*def __USE_XOPEN2K8*/
 /* Execute the file FD refers to, overlaying the running program image.
    ARGV and ENVP are passed to the new program, as for `execve'.  */
 extern int fexecve (int __fd, char *const __argv[], char *const __envp[])
-     __THROW;
+     __THROW __nonnull ((2));
 #endif
 
 
 /* Execute PATH with arguments ARGV and environment from `environ'.  */
 extern int execv (const char *__path, char *const __argv[])
-     __THROW __nonnull ((1));
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execv)
 
 /* Execute PATH with all arguments after PATH until a NULL pointer,
    and the argument after that for environment.  */
 extern int execle (const char *__path, const char *__arg, ...)
-     __THROW __nonnull ((1));
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execle)
 
 /* Execute PATH with all arguments after PATH until
    a NULL pointer and environment from `environ'.  */
 extern int execl (const char *__path, const char *__arg, ...)
-     __THROW __nonnull ((1));
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execl)
 
 /* Execute FILE, searching in the `PATH' environment variable if it contains
    no slashes, with arguments ARGV and environment from `environ'.  */
 extern int execvp (const char *__file, char *const __argv[])
-     __THROW __nonnull ((1));
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execvp)
 
 /* Execute FILE, searching in the `PATH' environment variable if
    it contains no slashes, with all arguments after FILE until a
    NULL pointer and environment from `environ'.  */
 extern int execlp (const char *__file, const char *__arg, ...)
-     __THROW __nonnull ((1));
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execlp)
 
 #ifdef __USE_GNU
 /* Execute FILE, searching in the `PATH' environment variable if it contains
    no slashes, with arguments ARGV and environment from a pointer */
-extern int execvpe (__const char *__file, char *__const __argv[], char *__const __envp[])
-     __THROW __nonnull ((1));
+extern int execvpe (const char *__file, char *const __argv[],
+		char *const __envp[])
+     __THROW __nonnull ((1, 2));
 libc_hidden_proto(execvpe)
 #endif
 
@@ -685,7 +687,7 @@ extern __pid_t __REDIRECT_NTH (getpgrp, (__pid_t __pid), __getpgid);
 
 /* Get the process group ID of process PID.  */
 extern __pid_t __getpgid (__pid_t __pid) __THROW;
-#ifdef __USE_XOPEN_EXTENDED
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 extern __pid_t getpgid (__pid_t __pid) __THROW;
 #endif
 
@@ -731,7 +733,7 @@ extern int __REDIRECT_NTH (setpgrp, (__pid_t __pid, __pid_t __pgrp), setpgid);
 extern __pid_t setsid (void) __THROW;
 libc_hidden_proto(setsid)
 
-#ifdef __USE_XOPEN_EXTENDED
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
 /* Return the session ID of the given process.  */
 extern __pid_t getsid (__pid_t __pid) __THROW;
 libc_hidden_proto(getsid)
@@ -768,37 +770,37 @@ extern int group_member (__gid_t __gid) __THROW;
    If the calling process is the super-user, set the real
    and effective user IDs, and the saved set-user-ID to UID;
    if not, the effective user ID is set to UID.  */
-extern int setuid (__uid_t __uid) __THROW;
+extern int setuid (__uid_t __uid) __THROW __wur;
 
 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 /* Set the real user ID of the calling process to RUID,
    and the effective user ID of the calling process to EUID.  */
-extern int setreuid (__uid_t __ruid, __uid_t __euid) __THROW;
+extern int setreuid (__uid_t __ruid, __uid_t __euid) __THROW __wur;
 libc_hidden_proto(setreuid)
 #endif
 
 #if defined __USE_BSD || defined __USE_XOPEN2K
 /* Set the effective user ID of the calling process to UID.  */
-extern int seteuid (__uid_t __uid) __THROW;
+extern int seteuid (__uid_t __uid) __THROW __wur;
 libc_hidden_proto(seteuid)
-#endif /* Use BSD.  */
+#endif
 
 /* Set the group ID of the calling process to GID.
    If the calling process is the super-user, set the real
    and effective group IDs, and the saved set-group-ID to GID;
    if not, the effective group ID is set to GID.  */
-extern int setgid (__gid_t __gid) __THROW;
+extern int setgid (__gid_t __gid) __THROW __wur;
 
 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 /* Set the real group ID of the calling process to RGID,
    and the effective group ID of the calling process to EGID.  */
-extern int setregid (__gid_t __rgid, __gid_t __egid) __THROW;
+extern int setregid (__gid_t __rgid, __gid_t __egid) __THROW __wur;
 libc_hidden_proto(setregid)
 #endif
 
 #if defined __USE_BSD || defined __USE_XOPEN2K
 /* Set the effective group ID of the calling process to GID.  */
-extern int setegid (__gid_t __gid) __THROW;
+extern int setegid (__gid_t __gid) __THROW __wur;
 #endif /* Use BSD.  */
 
 #ifdef __USE_GNU
@@ -816,14 +818,14 @@ extern int getresgid (__gid_t *__rgid, __gid_t *__egid, __gid_t *__sgid)
 /* Set the real user ID, effective user ID, and saved-set user ID,
    of the calling process to RUID, EUID, and SUID, respectively.  */
 extern int setresuid (__uid_t __ruid, __uid_t __euid, __uid_t __suid)
-     __THROW;
+     __THROW __wur;
 libc_hidden_proto(setresuid)
 #endif
 
 /* Set the real group ID, effective group ID, and saved-set group ID,
    of the calling process to RGID, EGID, and SGID, respectively.  */
 extern int setresgid (__gid_t __rgid, __gid_t __egid, __gid_t __sgid)
-     __THROW;
+     __THROW __wur;
 libc_hidden_proto(setresgid)
 #endif
 
@@ -832,7 +834,7 @@ libc_hidden_proto(setresgid)
 /* Clone the calling process, creating an exact copy.
    Return -1 for errors, 0 to the new process,
    and the process ID of the new process to the old process.  */
-extern __pid_t fork (void) __THROW;
+extern __pid_t fork (void) __THROWNL;
 # ifdef _LIBC
 # ifdef __UCLIBC_HAS_THREADS__
 extern __typeof(fork) __libc_fork;
@@ -903,7 +905,7 @@ extern ssize_t readlink (const char *__restrict __path,
 			 char *__restrict __buf, size_t __len)
      __THROW __nonnull ((1, 2)) __wur;
 libc_hidden_proto(readlink)
-#endif /* Use BSD.  */
+#endif /* Use POSIX.1-2001.  */
 
 #ifdef __USE_ATFILE
 /* Like symlink but a relative path in TO is interpreted relative to TOFD.  */
@@ -944,7 +946,7 @@ extern int tcsetpgrp (int __fd, __pid_t __pgrp_id) __THROW;
 
 /* Return the login name of the user.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern char *getlogin (void);
 libc_hidden_proto(getlogin)
@@ -953,7 +955,7 @@ libc_hidden_proto(getlogin)
    If it cannot be determined or some other error occurred, return the error
    code.  Otherwise return 0.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int getlogin_r (char *__name, size_t __name_len) __nonnull ((1));
 #endif
@@ -974,7 +976,7 @@ extern int setlogin (const char *__name) __THROW __nonnull ((1));
 #endif
 
 
-#if defined __USE_BSD || defined __USE_UNIX98
+#if defined __USE_BSD || defined __USE_UNIX98 || defined __USE_XOPEN2K
 /* Put the name of the current host in no more than LEN bytes of NAME.
    The result is null-terminated if LEN is large enough for the full
    name and the terminator.  */
@@ -1071,6 +1073,11 @@ extern char *getpass (const char *__prompt) __nonnull ((1));
 extern int fsync (int __fd);
 #endif /* Use BSD || X/Open || Unix98.  */
 
+#if 0 /*def __USE_GNU */
+/* Make all changes done to all files on the file system associated
+ *    with FD actually appear on disk.  */
+extern int syncfs (int __fd) __THROW;
+#endif
 
 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
 
@@ -1263,7 +1270,7 @@ extern void swab (const void *__restrict __from, void *__restrict __to,
 
 /* The Single Unix specification demands this prototype to be here.
    It is also found in <stdio.h>.  */
-#ifdef __USE_XOPEN
+#if defined __USE_XOPEN && !defined __USE_XOPEN2K
 /* Return the name of the controlling terminal.  */
 extern char *ctermid (char *__s) __THROW;
 #endif
diff --git a/include/utmp.h b/include/utmp.h
index 2908e3386..8ecbb54e7 100644
--- a/include/utmp.h
+++ b/include/utmp.h
@@ -40,7 +40,7 @@ __BEGIN_DECLS
 /* Make FD be the controlling terminal, stdin, stdout, and stderr;
    then close FD.  Returns 0 on success, nonzero on error.  */
 extern int login_tty (int __fd) __THROW;
-
+libutil_hidden_proto(login_tty)
 
 /* Write the given entry into utmp and wtmp.  */
 extern void login (const struct utmp *__entry) __THROW;
diff --git a/include/wchar.h b/include/wchar.h
index 4ddd258f0..67f44b763 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -660,7 +660,7 @@ extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 
 /* Write a character to stdout.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern wint_t putwchar (wchar_t __wc);
 
@@ -668,14 +668,14 @@ extern wint_t putwchar (wchar_t __wc);
 /* Get a newline-terminated wide character string of finite length
    from STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 			__FILE *__restrict __stream);
 
 /* Write a string to STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern int fputws (const wchar_t *__restrict __ws,
 		   __FILE *__restrict __stream);
@@ -684,7 +684,7 @@ libc_hidden_proto(fputws)
 
 /* Push a character back onto the input buffer of STREAM.
 
-   This function is a possible cancellation points and therefore not
+   This function is a possible cancellation point and therefore not
    marked with __THROW.  */
 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 libc_hidden_proto(ungetwc)