libphobos: Merge upstream druntime 175bf5fc

Backports extern(C) bindings committed to upstream druntime since the
last sync.

Reviewed-on: https://github.com/dlang/druntime/pull/2552

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@270295 138bc75d-0d04-0410-961f-82ee72b054a4

16 files changed, 304 insertions, 66 deletions

diff --git a/libphobos/libdruntime/MERGE b/libphobos/libdruntime/MERGE
index 15a55ab612a..a7bbd3da964 100644
--- a/libphobos/libdruntime/MERGE
+++ b/libphobos/libdruntime/MERGE
@@ -1,4 +1,4 @@
-d57fa1ffaecc858229ed7a730e8486b59197dee5
+175bf5fc69d26fec60d533ff77f7e915fd5bb468
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/druntime repository.
diff --git a/libphobos/libdruntime/core/stdc/stdio.d b/libphobos/libdruntime/core/stdc/stdio.d
index e708a51763c..6ce3f9d13e5 100644
--- a/libphobos/libdruntime/core/stdc/stdio.d
+++ b/libphobos/libdruntime/core/stdc/stdio.d
@@ -1643,9 +1643,6 @@ else version (CRuntime_Bionic)
 }
 else version (CRuntime_Musl)
 {
-    import core.sys.posix.sys.types : off_t;
-    ///
-    int fseeko(FILE *, off_t, int);
     @trusted
     {
         ///
diff --git a/libphobos/libdruntime/core/stdc/time.d b/libphobos/libdruntime/core/stdc/time.d
index 648f782601b..4a571e153bf 100644
--- a/libphobos/libdruntime/core/stdc/time.d
+++ b/libphobos/libdruntime/core/stdc/time.d
@@ -148,21 +148,22 @@ else
 }
 
 ///
-double  difftime(time_t time1, time_t time0);
+pure double  difftime(time_t time1, time_t time0); // MT-Safe
 ///
-time_t  mktime(tm* timeptr);
+@system time_t  mktime(scope tm* timeptr); // @system: MT-Safe env locale
 ///
-time_t  time(time_t* timer);
+time_t  time(scope time_t* timer);
+
 ///
-char*   asctime(in tm* timeptr);
+@system char*   asctime(const scope tm* timeptr); // @system: MT-Unsafe race:asctime locale
 ///
-char*   ctime(in time_t* timer);
+@system char*   ctime(const scope time_t* timer); // @system: MT-Unsafe race:tmbuf race:asctime env locale
 ///
-tm*     gmtime(in time_t* timer);
+@system tm*     gmtime(const scope time_t* timer); // @system: MT-Unsafe race:tmbuf env locale
 ///
-tm*     localtime(in time_t* timer);
+@system tm*     localtime(const scope time_t* timer); // @system: MT-Unsafe race:tmbuf env locale
 ///
-@system size_t  strftime(char* s, size_t maxsize, in char* format, in tm* timeptr);
+@system size_t  strftime(scope char* s, size_t maxsize, const scope char* format, const scope tm* timeptr); // @system: MT-Safe env locale
 
 version (Windows)
 {
@@ -171,9 +172,9 @@ version (Windows)
     ///
     void  _tzset();                          // non-standard
     ///
-    @system char* _strdate(char* s);                 // non-standard
+    @system char* _strdate(return scope char* s);                 // non-standard
     ///
-    @system char* _strtime(char* s);                 // non-standard
+    @system char* _strtime(return scope char* s);                 // non-standard
 
     ///
     extern __gshared const(char)*[2] tzname; // non-standard
diff --git a/libphobos/libdruntime/core/sync/condition.d b/libphobos/libdruntime/core/sync/condition.d
index b6755f2d998..8afa8f7cc38 100644
--- a/libphobos/libdruntime/core/sync/condition.d
+++ b/libphobos/libdruntime/core/sync/condition.d
@@ -23,7 +23,12 @@ public import core.time;
 version (Windows)
 {
     private import core.sync.semaphore;
-    private import core.sys.windows.windows;
+    private import core.sys.windows.basetsd /+: HANDLE+/;
+    private import core.sys.windows.winbase /+: CloseHandle, CreateSemaphoreA, CRITICAL_SECTION,
+        DeleteCriticalSection, EnterCriticalSection, INFINITE, InitializeCriticalSection,
+        LeaveCriticalSection, ReleaseSemaphore, WAIT_OBJECT_0, WaitForSingleObject+/;
+    private import core.sys.windows.windef /+: BOOL, DWORD+/;
+    private import core.sys.windows.winerror /+: WAIT_TIMEOUT+/;
 }
 else version (Posix)
 {
diff --git a/libphobos/libdruntime/core/sync/mutex.d b/libphobos/libdruntime/core/sync/mutex.d
index 798f8412a02..024009f48aa 100644
--- a/libphobos/libdruntime/core/sync/mutex.d
+++ b/libphobos/libdruntime/core/sync/mutex.d
@@ -20,7 +20,9 @@ public import core.sync.exception;
 
 version (Windows)
 {
-    private import core.sys.windows.windows;
+    private import core.sys.windows.winbase /+: CRITICAL_SECTION, DeleteCriticalSection,
+        EnterCriticalSection, InitializeCriticalSection, LeaveCriticalSection,
+        TryEnterCriticalSection+/;
 }
 else version (Posix)
 {
@@ -144,7 +146,7 @@ class Mutex :
         {
             import core.internal.abort : abort;
             !pthread_mutex_destroy(&m_hndl) ||
-                abort("Error: pthread_mutex_init failed.");
+                abort("Error: pthread_mutex_destroy failed.");
         }
         this.__monitor = null;
     }
@@ -318,7 +320,7 @@ unittest
         void useResource() shared @safe nothrow @nogc
         {
             mtx.lock_nothrow();
-            cargo++;
+            (cast() cargo) += 1;
             mtx.unlock_nothrow();
         }
     }
@@ -370,14 +372,15 @@ unittest
     // should happen only from a single thread.
     (cast(Mutex) mtx).__dtor();
 
-    // Verify that the underlying implementation has been destroyed
-    // by checking that locking is not possible. This assumes
-    // that the underlying implementation is well behaved
-    // and makes the object non-lockable upon destruction.
-    // The Bionic and Musl C runtimes and DragonFly don't appear to do so, so skip this test.
+    // Verify that the underlying implementation has been destroyed by checking
+    // that locking is not possible. This assumes that the underlying
+    // implementation is well behaved and makes the object non-lockable upon
+    // destruction. The Bionic, DragonFly, Musl, and Solaris C runtimes don't
+    // appear to do so, so skip this test.
     version (CRuntime_Bionic) {} else
     version (CRuntime_Musl) {} else
     version (DragonFlyBSD) {} else
+    version (Solaris) {} else
     assert(!mtx.tryLock_nothrow());
 
     free(cast(void*) mtx);
diff --git a/libphobos/libdruntime/core/sync/semaphore.d b/libphobos/libdruntime/core/sync/semaphore.d
index 0d6ab70c6d1..56ac7dc3663 100644
--- a/libphobos/libdruntime/core/sync/semaphore.d
+++ b/libphobos/libdruntime/core/sync/semaphore.d
@@ -29,7 +29,11 @@ else version (WatchOS)
 
 version (Windows)
 {
-    private import core.sys.windows.windows;
+    private import core.sys.windows.basetsd /+: HANDLE+/;
+    private import core.sys.windows.winbase /+: CloseHandle, CreateSemaphoreA, INFINITE,
+        ReleaseSemaphore, WAIT_OBJECT_0, WaitForSingleObject+/;
+    private import core.sys.windows.windef /+: BOOL, DWORD+/;
+    private import core.sys.windows.winerror /+: WAIT_TIMEOUT+/;
 }
 else version (Darwin)
 {
@@ -337,19 +341,17 @@ class Semaphore
     }
 
 
-private:
-    version (Windows)
-    {
-        HANDLE  m_hndl;
-    }
-    else version (Darwin)
-    {
-        semaphore_t m_hndl;
-    }
-    else version (Posix)
-    {
-        sem_t   m_hndl;
-    }
+protected:
+
+    /// Aliases the operating-system-specific semaphore type.
+    version (Windows)        alias Handle = HANDLE;
+    /// ditto
+    else version (Darwin)    alias Handle = semaphore_t;
+    /// ditto
+    else version (Posix)     alias Handle = sem_t;
+
+    /// Handle to the system-specific semaphore.
+    Handle m_hndl;
 }
 
 
diff --git a/libphobos/libdruntime/core/sys/posix/aio.d b/libphobos/libdruntime/core/sys/posix/aio.d
index 47458160f2e..954d2c3cc46 100644
--- a/libphobos/libdruntime/core/sys/posix/aio.d
+++ b/libphobos/libdruntime/core/sys/posix/aio.d
@@ -93,6 +93,60 @@ else version (CRuntime_Musl)
         ubyte[32-2*(void*).sizeof] __dummy4;
     }
 }
+else version (CRuntime_UClibc)
+{
+    import core.sys.posix.config;
+    import core.sys.posix.sys.types;
+
+    struct aiocb
+    {
+        int aio_fildes;
+        int aio_lio_opcode;
+        int aio_reqprio;
+        void* aio_buf;   //volatile
+        size_t aio_nbytes;
+        sigevent aio_sigevent;
+
+        aiocb* __next_prio;
+        int __abs_prio;
+        int __policy;
+        int __error_code;
+        ssize_t __return_value;
+
+        static if (__USE_LARGEFILE64)
+        {
+            off_t aio_offset;
+            ubyte[off64_t.sizeof - off_t.sizeof] __pad;
+        }
+        else
+        {
+            off64_t aio_offset;
+        }
+        ubyte[32] __unused;
+    }
+
+    static if (__USE_LARGEFILE64)
+    {
+        struct aiocb64
+        {
+            int aio_fildes;
+            int aio_lio_opcode;
+            int aio_reqprio;
+            void* aio_buf;   //volatile
+            size_t aio_nbytes;
+            sigevent aio_sigevent;
+
+            aiocb* __next_prio;
+            int __abs_prio;
+            int __policy;
+            int __error_code;
+            ssize_t __return_value;
+
+            off64_t aio_offset;
+            ubyte[32] __unused;
+        }
+    }
+}
 else version (Darwin)
 {
     struct aiocb
@@ -210,6 +264,15 @@ else version (CRuntime_Musl)
         AIO_ALLDONE
     }
 }
+else version (CRuntime_UClibc)
+{
+    enum
+    {
+        AIO_CANCELED,
+        AIO_NOTCANCELED,
+        AIO_ALLDONE
+    }
+}
 else version (Darwin)
 {
     enum
@@ -257,6 +320,15 @@ else version (CRuntime_Musl)
         LIO_NOP
     }
 }
+else version (CRuntime_UClibc)
+{
+    enum
+    {
+        LIO_READ,
+        LIO_WRITE,
+        LIO_NOP
+    }
+}
 else version (Darwin)
 {
     enum
@@ -302,6 +374,14 @@ else version (CRuntime_Musl)
         LIO_NOWAIT
     }
 }
+else version (CRuntime_UClibc)
+{
+    enum
+    {
+        LIO_WAIT,
+        LIO_NOWAIT
+    }
+}
 else version (Darwin)
 {
     enum
@@ -362,6 +442,40 @@ version (CRuntime_Glibc)
         int lio_listio(int mode, const(aiocb*)* aiocb_list, int nitems, sigevent* sevp);
     }
 }
+version (CRuntime_UClibc)
+{
+    static if (__USE_LARGEFILE64)
+    {
+        int aio_read64(aiocb64* aiocbp);
+        int aio_write64(aiocb64* aiocbp);
+        int aio_fsync64(int op, aiocb64* aiocbp);
+        int aio_error64(const(aiocb64)* aiocbp);
+        ssize_t aio_return64(aiocb64* aiocbp);
+        int aio_suspend64(const(aiocb64*)* aiocb_list, int nitems, const(timespec)* timeout);
+        int aio_cancel64(int fd, aiocb64* aiocbp);
+        int lio_listio64(int mode, const(aiocb64*)* aiocb_list, int nitems, sigevent* sevp);
+
+        alias aio_read = aio_read64;
+        alias aio_write = aio_write64;
+        alias aio_fsync = aio_fsync64;
+        alias aio_error = aio_error64;
+        alias aio_return = aio_return64;
+        alias aio_suspend = aio_suspend64;
+        alias aio_cancel = aio_cancel64;
+        alias lio_listio = lio_listio64;
+    }
+    else
+    {
+        int aio_read(aiocb* aiocbp);
+        int aio_write(aiocb* aiocbp);
+        int aio_fsync(int op, aiocb* aiocbp);
+        int aio_error(const(aiocb)* aiocbp);
+        ssize_t aio_return(aiocb* aiocbp);
+        int aio_suspend(const(aiocb*)* aiocb_list, int nitems, const(timespec)* timeout);
+        int aio_cancel(int fd, aiocb* aiocbp);
+        int lio_listio(int mode, const(aiocb*)* aiocb_list, int nitems, sigevent* sevp);
+    }
+}
 else
 {
     int aio_read(aiocb* aiocbp);
@@ -395,6 +509,26 @@ version (CRuntime_Glibc)
         void aio_init(const(aioinit)* init);
     }
 }
+version (CRuntime_UClibc)
+{
+    static if (__USE_GNU)
+    {
+        /* To customize the implementation one can use the following struct.  */
+        struct aioinit
+        {
+            int aio_threads;
+            int aio_num;
+            int aio_locks;
+            int aio_usedba;
+            int aio_debug;
+            int aio_numusers;
+            int aio_idle_time;
+            int aio_reserved;
+        }
+
+        void aio_init(const(aioinit)* init);
+    }
+}
 else version (FreeBSD)
 {
     int aio_waitcomplete(aiocb** aiocb_list, const(timespec)* timeout);
diff --git a/libphobos/libdruntime/core/sys/posix/fcntl.d b/libphobos/libdruntime/core/sys/posix/fcntl.d
index 4b06600d9fa..2f1daf6ebc9 100644
--- a/libphobos/libdruntime/core/sys/posix/fcntl.d
+++ b/libphobos/libdruntime/core/sys/posix/fcntl.d
@@ -868,7 +868,7 @@ else version (CRuntime_UClibc)
     enum F_UNLCK        = 2;
     enum F_WRLCK        = 1;
 
-    version (X86_64)
+    version (X86_Any)
     {
         enum O_CREAT        = 0x40;     // octal     0100
         enum O_EXCL         = 0x80;     // octal     0200
@@ -877,12 +877,13 @@ else version (CRuntime_UClibc)
 
         enum O_APPEND       = 0x400;    // octal    02000
         enum O_NONBLOCK     = 0x800;    // octal    04000
+        enum O_CLOEXEC      = 0x80000;  // octal    02000000
         enum O_SYNC         = 0x1000;   // octal    010000
         enum O_NDELAY       = O_NONBLOCK;
         enum O_FSYNC        = O_SYNC;
         enum O_ASYNC        = 0x2000;   // octal    020000
     }
-    else version (MIPS32)
+    else version (MIPS_Any)
     {
         enum O_CREAT        = 0x0100;
         enum O_EXCL         = 0x0400;
@@ -892,11 +893,12 @@ else version (CRuntime_UClibc)
         enum O_APPEND       = 0x0008;
         enum O_SYNC         = 0x0010;
         enum O_NONBLOCK     = 0x0080;
+        enum O_CLOEXEC      = 0x80000;  // octal    02000000
         enum O_NDELAY       = O_NONBLOCK;
         enum O_FSYNC        = O_SYNC;
         enum O_ASYNC        = 0x1000;
     }
-    else version (ARM)
+    else version (ARM_Any)
     {
         enum O_CREAT        = 0x40;     // octal     0100
         enum O_EXCL         = 0x80;     // octal     0200
@@ -905,6 +907,7 @@ else version (CRuntime_UClibc)
 
         enum O_APPEND       = 0x400;    // octal    02000
         enum O_NONBLOCK     = 0x800;    // octal    04000
+        enum O_CLOEXEC      = 0x80000;  // octal    02000000
         enum O_SYNC         = 0x1000;   // octal    010000
         enum O_NDELAY       = O_NONBLOCK;
         enum O_FSYNC        = O_SYNC;
diff --git a/libphobos/libdruntime/core/sys/posix/stdio.d b/libphobos/libdruntime/core/sys/posix/stdio.d
index 7dbfe9766ad..0c6a144f520 100644
--- a/libphobos/libdruntime/core/sys/posix/stdio.d
+++ b/libphobos/libdruntime/core/sys/posix/stdio.d
@@ -180,6 +180,37 @@ else version (CRuntime_UClibc)
         FILE* tmpfile();
     }
 }
+else version (Solaris)
+{
+    static if (__USE_FILE_OFFSET64 && __WORDSIZE != 64)
+    {
+        int   fgetpos64(FILE*, fpos_t *);
+        alias fgetpos = fgetpos64;
+
+        FILE* fopen64(in char*, in char*);
+        alias fopen = fopen64;
+
+        FILE* freopen64(in char*, in char*, FILE*);
+        alias freopen = freopen64;
+
+        int   fseek(FILE*, c_long, int);
+
+        int   fsetpos64(FILE*, in fpos_t*);
+        alias fsetpos = fsetpos64;
+
+        FILE* tmpfile64();
+        alias tmpfile = tmpfile64;
+    }
+    else
+    {
+        int   fgetpos(FILE*, fpos_t *);
+        FILE* fopen(in char*, in char*);
+        FILE* freopen(in char*, in char*, FILE*);
+        int   fseek(FILE*, c_long, int);
+        int   fsetpos(FILE*, in fpos_t*);
+        FILE* tmpfile();
+    }
+}
 
 //
 // C Extension (CX)
@@ -246,6 +277,31 @@ else version (CRuntime_UClibc)
     off_t ftello(FILE*);
   }
 }
+else version (Solaris)
+{
+    enum L_ctermid = 9;
+    enum L_cuserid = 9;
+
+    static if (__USE_FILE_OFFSET64 && __WORDSIZE != 64)
+    {
+        int   fseeko64(FILE*, off_t, int);
+        alias fseeko = fseeko64;
+    }
+    else
+    {
+        int   fseeko(FILE*, off_t, int);
+    }
+
+    static if (__USE_FILE_OFFSET64 && __WORDSIZE != 64)
+    {
+        off_t ftello64(FILE*);
+        alias ftello = ftello64;
+    }
+    else
+    {
+        off_t ftello(FILE*);
+    }
+}
 else version (Posix)
 {
     int   fseeko(FILE*, off_t, int);
diff --git a/libphobos/libdruntime/core/sys/posix/sys/socket.d b/libphobos/libdruntime/core/sys/posix/sys/socket.d
index d1ebad7318a..197f1d6f712 100644
--- a/libphobos/libdruntime/core/sys/posix/sys/socket.d
+++ b/libphobos/libdruntime/core/sys/posix/sys/socket.d
@@ -1941,31 +1941,37 @@ else version (CRuntime_UClibc)
         int l_linger;
     }
 
-    version (X86_64)
+    version (X86_Any)
     {
         enum
         {
             SOCK_DGRAM      = 2,
             SOCK_SEQPACKET  = 5,
-            SOCK_STREAM     = 1
+            SOCK_STREAM     = 1,
+            SOCK_CLOEXEC    = 0x80000, // octal 02000000
+            SOCK_NONBLOCK   = 0x800 // octal 00004000
         }
     }
-    else version (MIPS32)
+    else version (MIPS_Any)
     {
         enum
         {
             SOCK_DGRAM      = 1,
             SOCK_SEQPACKET  = 5,
             SOCK_STREAM     = 2,
+            SOCK_CLOEXEC    = 0x80000, // octal 02000000
+            SOCK_NONBLOCK   = 0x80 // octal 00000200
         }
     }
-    else version (ARM)
+    else version (ARM_Any)
     {
         enum
         {
             SOCK_DGRAM      = 2,
             SOCK_SEQPACKET  = 5,
-            SOCK_STREAM     = 1
+            SOCK_STREAM     = 1,
+            SOCK_CLOEXEC    = 0x80000, // octal 02000000
+            SOCK_NONBLOCK   = 0x800 // octal 00004000
         }
     }
     else
@@ -1991,6 +1997,7 @@ else version (CRuntime_UClibc)
         SO_TYPE         = 3,
 
         SOL_SOCKET      = 1,
+        SOL_TCP         = 6,
         SOMAXCONN       = 128
     }
 
diff --git a/libphobos/libdruntime/core/sys/solaris/dlfcn.d b/libphobos/libdruntime/core/sys/solaris/dlfcn.d
index 95afc89cec5..d23bdaa0b8d 100644
--- a/libphobos/libdruntime/core/sys/solaris/dlfcn.d
+++ b/libphobos/libdruntime/core/sys/solaris/dlfcn.d
@@ -9,6 +9,7 @@ module core.sys.solaris.dlfcn;
 version (Solaris):
 extern (C):
 nothrow:
+@nogc:
 
 public import core.sys.posix.dlfcn;
 import core.stdc.config;
@@ -109,4 +110,4 @@ struct Dl_serinfo
     Dl_serpath[1]  dls_serpath;
 }
 
-// FIXME: Dl_argsinfo, Dl_mapinfo, Dl_amd64_unwindinfo are missing
\ No newline at end of file
+// FIXME: Dl_argsinfo, Dl_mapinfo, Dl_amd64_unwindinfo are missing
diff --git a/libphobos/libdruntime/core/sys/solaris/sys/link.d b/libphobos/libdruntime/core/sys/solaris/sys/link.d
index e056cac5216..d9d47c09142 100644
--- a/libphobos/libdruntime/core/sys/solaris/sys/link.d
+++ b/libphobos/libdruntime/core/sys/solaris/sys/link.d
@@ -15,22 +15,22 @@ import core.stdc.config;
 struct Elf32_Dyn
 {
     Elf32_Sword d_tag;
-    union d_un
+    union _d_un
     {
         Elf32_Word d_val;
         Elf32_Addr d_ptr;
         Elf32_Off  d_off;
-    }
+    } _d_un d_un;
 }
 
 struct Elf64_Dyn
 {
     Elf64_Xword d_tag;
-    union d_un
+    union _d_un
     {
         Elf64_Xword d_val;
         Elf64_Addr  d_ptr;
-    }
+    } _d_un d_un;
 }
 
 enum DT_NULL         = 0;
diff --git a/libphobos/libdruntime/core/sys/windows/shlobj.d b/libphobos/libdruntime/core/sys/windows/shlobj.d
index ff7f8985c35..19b4426edf7 100644
--- a/libphobos/libdruntime/core/sys/windows/shlobj.d
+++ b/libphobos/libdruntime/core/sys/windows/shlobj.d
@@ -708,7 +708,7 @@ static if (_WIN32_IE >= 0x500) {
             ULONG dwFlags;
             DWORD dwFileAttributes;
             ULONG dwReserved;
-            WCHAR *pwszExt = 0;
+            WCHAR *pwszExt = null;
             WCHAR[MAX_PATH] wszFile = 0;
         }
         alias SHCOLUMNDATA*        LPSHCOLUMNDATA;
diff --git a/libphobos/libdruntime/core/sys/windows/threadaux.d b/libphobos/libdruntime/core/sys/windows/threadaux.d
index 4e887b7be4e..e3bdd400668 100644
--- a/libphobos/libdruntime/core/sys/windows/threadaux.d
+++ b/libphobos/libdruntime/core/sys/windows/threadaux.d
@@ -24,7 +24,7 @@ import core.stdc.stdlib;
 public import core.thread;
 
 extern(Windows)
-HANDLE OpenThread(DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId) nothrow;
+HANDLE OpenThread(DWORD dwDesiredAccess, BOOL bInheritHandle, DWORD dwThreadId) nothrow @nogc;
 
 extern (C) extern __gshared int _tls_index;
 
@@ -113,7 +113,7 @@ struct thread_aux
     }
 
     alias fnNtQuerySystemInformation = extern(Windows)
-    HRESULT function( uint SystemInformationClass, void* info, uint infoLength, uint* ReturnLength ) nothrow;
+    HRESULT function( uint SystemInformationClass, void* info, uint infoLength, uint* ReturnLength ) nothrow @nogc;
 
     enum ThreadBasicInformation = 0;
 
@@ -129,7 +129,7 @@ struct thread_aux
     }
 
     alias fnNtQueryInformationThread = extern(Windows)
-    int function( HANDLE ThreadHandle, uint ThreadInformationClass, void* buf, uint size, uint* ReturnLength ) nothrow;
+    int function( HANDLE ThreadHandle, uint ThreadInformationClass, void* buf, uint size, uint* ReturnLength ) nothrow @nogc;
 
     enum SYNCHRONIZE = 0x00100000;
     enum THREAD_GET_CONTEXT = 8;
@@ -138,7 +138,7 @@ struct thread_aux
 
     ///////////////////////////////////////////////////////////////////
     // get the thread environment block (TEB) of the thread with the given handle
-    static void** getTEB( HANDLE hnd ) nothrow
+    static void** getTEB( HANDLE hnd ) nothrow @nogc
     {
         HANDLE nthnd = GetModuleHandleA( "NTDLL" );
         assert( nthnd, "cannot get module handle for ntdll" );
@@ -153,7 +153,7 @@ struct thread_aux
     }
 
     // get the thread environment block (TEB) of the thread with the given identifier
-    static void** getTEB( uint id ) nothrow
+    static void** getTEB( uint id ) nothrow @nogc
     {
         HANDLE hnd = OpenThread( THREAD_QUERY_INFORMATION, FALSE, id );
         assert( hnd, "OpenThread failed" );
@@ -164,7 +164,7 @@ struct thread_aux
     }
 
     // get linear address of TEB of current thread
-    static void** getTEB() nothrow
+    static void** getTEB() nothrow @nogc
     {
         version (Win32)
         {
@@ -210,21 +210,21 @@ struct thread_aux
     }
 
     // get the stack bottom (the top address) of the thread with the given handle
-    static void* getThreadStackBottom( HANDLE hnd ) nothrow
+    static void* getThreadStackBottom( HANDLE hnd ) nothrow @nogc
     {
         void** teb = getTEB( hnd );
         return teb[1];
     }
 
     // get the stack bottom (the top address) of the thread with the given identifier
-    static void* getThreadStackBottom( uint id ) nothrow
+    static void* getThreadStackBottom( uint id ) nothrow @nogc
     {
         void** teb = getTEB( id );
         return teb[1];
     }
 
     // create a thread handle with full access to the thread with the given identifier
-    static HANDLE OpenThreadHandle( uint id ) nothrow
+    static HANDLE OpenThreadHandle( uint id ) nothrow @nogc
     {
         return OpenThread( SYNCHRONIZE|THREAD_GET_CONTEXT|THREAD_QUERY_INFORMATION|THREAD_SUSPEND_RESUME, FALSE, id );
     }
diff --git a/libphobos/libdruntime/core/time.d b/libphobos/libdruntime/core/time.d
index 5706c809931..1982122858e 100644
--- a/libphobos/libdruntime/core/time.d
+++ b/libphobos/libdruntime/core/time.d
@@ -85,7 +85,7 @@ import core.internal.string;
 
 version (Windows)
 {
-import core.sys.windows.windows;
+import core.sys.windows.winbase /+: QueryPerformanceCounter, QueryPerformanceFrequency+/;
 }
 else version (Posix)
 {
@@ -195,7 +195,7 @@ version (CoreDdoc) enum ClockType
         extremely frequently (e.g. hundreds of thousands of times a second) but
         don't care about high precision, the coarse clock might be appropriate.
 
-        Currently, only Linux and FreeBSD support a coarser clock, and on other
+        Currently, only Linux and FreeBSD/DragonFlyBSD support a coarser clock, and on other
         platforms, it's treated as $(D ClockType.normal).
       +/
     coarse = 2,
@@ -207,7 +207,7 @@ version (CoreDdoc) enum ClockType
         more precise clock than the normal one, it's treated as equivalent to
         $(D ClockType.normal).
 
-        Currently, only FreeBSD supports a more precise clock, where it uses
+        Currently, only FreeBSD/DragonFlyBSD supports a more precise clock, where it uses
         $(D CLOCK_MONOTONIC_PRECISE) for the monotonic time and
         $(D CLOCK_REALTIME_PRECISE) for the wall clock time.
       +/
@@ -231,7 +231,7 @@ version (CoreDdoc) enum ClockType
         Uses a clock that has a precision of one second (contrast to the coarse
         clock, which has sub-second precision like the normal clock does).
 
-        FreeBSD is the only system which specifically has a clock set up for
+        FreeBSD/DragonFlyBSD are the only systems which specifically have a clock set up for
         this (it has $(D CLOCK_SECOND) to use with $(D clock_gettime) which
         takes advantage of an in-kernel cached value), but on other systems, the
         fastest function available will be used, and the resulting $(D SysTime)
@@ -320,6 +320,16 @@ else version (NetBSD) enum ClockType
     precise = 3,
     second = 6,
 }
+else version (DragonFlyBSD) enum ClockType
+{
+    normal = 0,
+    coarse = 2,
+    precise = 3,
+    second = 6,
+    uptime = 8,
+    uptimeCoarse = 9,
+    uptimePrecise = 10,
+}
 else version (Solaris) enum ClockType
 {
     normal = 0,
@@ -386,6 +396,20 @@ version (Posix)
             case second: assert(0);
             }
         }
+        else version (DragonFlyBSD)
+        {
+            import core.sys.dragonflybsd.time;
+            with(ClockType) final switch (clockType)
+            {
+            case coarse: return CLOCK_MONOTONIC_FAST;
+            case normal: return CLOCK_MONOTONIC;
+            case precise: return CLOCK_MONOTONIC_PRECISE;
+            case uptime: return CLOCK_UPTIME;
+            case uptimeCoarse: return CLOCK_UPTIME_FAST;
+            case uptimePrecise: return CLOCK_UPTIME_PRECISE;
+            case second: assert(0);
+            }
+        }
         else version (Solaris)
         {
             import core.sys.solaris.time;
@@ -451,6 +475,8 @@ unittest
 
     Examples:
 --------------------
+import std.datetime;
+
 assert(dur!"days"(12) == dur!"hnsecs"(10_368_000_000_000L));
 assert(dur!"hnsecs"(27) == dur!"hnsecs"(27));
 assert(std.datetime.Date(2010, 9, 7) + dur!"days"(5) ==
diff --git a/libphobos/libdruntime/gc/os.d b/libphobos/libdruntime/gc/os.d
index daac0b8d9d8..cfef7f3f665 100644
--- a/libphobos/libdruntime/gc/os.d
+++ b/libphobos/libdruntime/gc/os.d
@@ -16,7 +16,8 @@ module gc.os;
 
 version (Windows)
 {
-    import core.sys.windows.windows;
+    import core.sys.windows.winbase : GetCurrentThreadId, VirtualAlloc, VirtualFree;
+    import core.sys.windows.winnt : MEM_COMMIT, MEM_RELEASE, MEM_RESERVE, PAGE_READWRITE;
 
     alias int pthread_t;
 
@@ -40,9 +41,11 @@ else version (Posix)
 
     import core.sys.posix.sys.mman;
     version (FreeBSD) import core.sys.freebsd.sys.mman : MAP_ANON;
+    version (DragonFlyBSD) import core.sys.dragonflybsd.sys.mman : MAP_ANON;
     version (NetBSD) import core.sys.netbsd.sys.mman : MAP_ANON;
     version (CRuntime_Glibc) import core.sys.linux.sys.mman : MAP_ANON;
     version (Darwin) import core.sys.darwin.sys.mman : MAP_ANON;
+    version (CRuntime_UClibc) import core.sys.linux.sys.mman : MAP_ANON;
     import core.stdc.stdlib;
 
     //version = GC_Use_Alloc_MMap;
@@ -170,7 +173,7 @@ version (Windows)
             return false;
         else
         {
-            import core.sys.windows.windows;
+            import core.sys.windows.winbase : GlobalMemoryStatus, MEMORYSTATUS;
             MEMORYSTATUS stat;
             GlobalMemoryStatus(&stat);
             // Less than 5 % of virtual address space available