libphobos: Merge upstream phobos cf95639ff

Backports ports committed to upstream phobos since the last sync.

Reviewed-on: https://github.com/dlang/phobos/pull/6947

git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@270296 138bc75d-0d04-0410-961f-82ee72b054a4

11 files changed, 128 insertions, 12 deletions

diff --git a/libphobos/src/MERGE b/libphobos/src/MERGE
index 63bd46834c5..b4d44b55624 100644
--- a/libphobos/src/MERGE
+++ b/libphobos/src/MERGE
@@ -1,4 +1,4 @@
-ef07932811de50a1d5810ea23462d127a60574a6
+cf95639ffd9ed6f3b9d10d98461b2fbd31615757
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/phobos repository.
diff --git a/libphobos/src/std/datetime/systime.d b/libphobos/src/std/datetime/systime.d
index e65d296e427..326b5441724 100644
--- a/libphobos/src/std/datetime/systime.d
+++ b/libphobos/src/std/datetime/systime.d
@@ -214,6 +214,22 @@ public:
                            hnsecsToUnixEpoch;
                 }
             }
+            else version (DragonFlyBSD)
+            {
+                import core.sys.dragonflybsd.time : clock_gettime, CLOCK_REALTIME,
+                    CLOCK_REALTIME_FAST, CLOCK_REALTIME_PRECISE, CLOCK_SECOND;
+                static if (clockType == ClockType.coarse)       alias clockArg = CLOCK_REALTIME_FAST;
+                else static if (clockType == ClockType.normal)  alias clockArg = CLOCK_REALTIME;
+                else static if (clockType == ClockType.precise) alias clockArg = CLOCK_REALTIME_PRECISE;
+                else static if (clockType == ClockType.second)  alias clockArg = CLOCK_SECOND;
+                else static assert(0, "Previous static if is wrong.");
+                timespec ts;
+                if (clock_gettime(clockArg, &ts) != 0)
+                    throw new TimeException("Call to clock_gettime() failed");
+                return convert!("seconds", "hnsecs")(ts.tv_sec) +
+                       ts.tv_nsec / 100 +
+                       hnsecsToUnixEpoch;
+            }
             else version (Solaris)
             {
                 static if (clockType == ClockType.second)
diff --git a/libphobos/src/std/datetime/timezone.d b/libphobos/src/std/datetime/timezone.d
index e923a34a98d..7ae19020243 100644
--- a/libphobos/src/std/datetime/timezone.d
+++ b/libphobos/src/std/datetime/timezone.d
@@ -292,10 +292,12 @@ public:
 
         version (Posix)
         {
-            version (FreeBSD)      enum utcZone = "Etc/UTC";
-            else version (NetBSD)  enum utcZone = "UTC";
-            else version (linux)   enum utcZone = "UTC";
-            else version (OSX)     enum utcZone = "UTC";
+            version (FreeBSD)            enum utcZone = "Etc/UTC";
+            else version (NetBSD)        enum utcZone = "UTC";
+            else version (DragonFlyBSD)  enum utcZone = "UTC";
+            else version (linux)         enum utcZone = "UTC";
+            else version (OSX)           enum utcZone = "UTC";
+            else version (Solaris)       enum utcZone = "UTC";
             else static assert(0, "The location of the UTC timezone file on this Posix platform must be set.");
 
             auto tzs = [testTZ("America/Los_Angeles", "PST", "PDT", dur!"hours"(-8), dur!"hours"(1)),
@@ -1891,6 +1893,14 @@ public:
         // Android concatenates all time zone data into a single file and stores it here.
         enum defaultTZDatabaseDir = "/system/usr/share/zoneinfo/";
     }
+    else version (Solaris)
+    {
+        /++
+            The default directory where the TZ Database files are. It's empty
+            for Windows, since Windows doesn't have them.
+          +/
+        enum defaultTZDatabaseDir = "/usr/share/lib/zoneinfo/";
+    }
     else version (Posix)
     {
         /++
diff --git a/libphobos/src/std/experimental/allocator/building_blocks/region.d b/libphobos/src/std/experimental/allocator/building_blocks/region.d
index dfcecce72bd..3d8431c23ca 100644
--- a/libphobos/src/std/experimental/allocator/building_blocks/region.d
+++ b/libphobos/src/std/experimental/allocator/building_blocks/region.d
@@ -392,6 +392,8 @@ struct InSituRegion(size_t size, size_t minAlign = platformAlignment)
     else version (PPC64) enum growDownwards = Yes.growDownwards;
     else version (MIPS32) enum growDownwards = Yes.growDownwards;
     else version (MIPS64) enum growDownwards = Yes.growDownwards;
+    else version (RISCV32) enum growDownwards = Yes.growDownwards;
+    else version (RISCV64) enum growDownwards = Yes.growDownwards;
     else version (SPARC) enum growDownwards = Yes.growDownwards;
     else version (SystemZ) enum growDownwards = Yes.growDownwards;
     else static assert(0, "Dunno how the stack grows on this architecture.");
diff --git a/libphobos/src/std/file.d b/libphobos/src/std/file.d
index 17b7ca82654..9ba992944eb 100644
--- a/libphobos/src/std/file.d
+++ b/libphobos/src/std/file.d
@@ -1488,6 +1488,7 @@ if (isInputRange!R && !isInfinite!R && isSomeChar!(ElementEncodingType!R))
 // - OS X, where the native filesystem (HFS+) stores filesystem
 //   timestamps with 1-second precision.
 version (FreeBSD) {} else
+version (DragonFlyBSD) {} else
 version (OSX) {} else
 @system unittest
 {
@@ -2779,6 +2780,10 @@ else version (NetBSD)
     {
         return readLink("/proc/self/exe");
     }
+    else version (DragonFlyBSD)
+    {
+        return readLink("/proc/curproc/file");
+    }
     else version (Solaris)
     {
         import core.sys.posix.unistd : getpid;
@@ -3092,8 +3097,12 @@ else version (Posix)
         {
             import std.path : buildPath;
 
-            immutable len = core.stdc.string.strlen(fd.d_name.ptr);
-            _name = buildPath(path, fd.d_name[0 .. len]);
+            static if (is(typeof(fd.d_namlen)))
+                immutable len = fd.d_namlen;
+            else
+                immutable len = (() @trusted => core.stdc.string.strlen(fd.d_name.ptr))();
+
+            _name = buildPath(path, (() @trusted => fd.d_name.ptr[0 .. len])());
 
             _didLStat = false;
             _didStat = false;
diff --git a/libphobos/src/std/internal/cstring.d b/libphobos/src/std/internal/cstring.d
index 257a1007b26..e5bc7f744bc 100644
--- a/libphobos/src/std/internal/cstring.d
+++ b/libphobos/src/std/internal/cstring.d
@@ -131,17 +131,20 @@ if (isSomeChar!To && (isInputRange!From || isSomeString!From) &&
     private:
         To* _ptr;
         size_t _length;        // length of the string
+
+        // the 'small string optimization'
         version (unittest)
         {
-            enum buffLength = 16 / To.sizeof;   // smaller size to trigger reallocations
+            // smaller size to trigger reallocations. Padding is to account for
+            // unittest/non-unittest cross-compilation (to avoid corruption)
+            To[16 / To.sizeof] _buff;
+            To[(256 - 16) / To.sizeof] _unittest_pad;
         }
         else
         {
-            enum buffLength = 256 / To.sizeof;   // production size
+            To[256 / To.sizeof] _buff; // production size
         }
 
-        To[buffLength] _buff;  // the 'small string optimization'
-
         static Res trustedVoidInit() { Res res = void; return res; }
     }
 
diff --git a/libphobos/src/std/math.d b/libphobos/src/std/math.d
index e98e746a856..daee6ec3c33 100644
--- a/libphobos/src/std/math.d
+++ b/libphobos/src/std/math.d
@@ -162,6 +162,8 @@ version (AArch64)   version = ARM_Any;
 version (ARM)       version = ARM_Any;
 version (SPARC)     version = SPARC_Any;
 version (SPARC64)   version = SPARC_Any;
+version (RISCV32)   version = RISCV_Any;
+version (RISCV64)   version = RISCV_Any;
 
 version (D_InlineAsm_X86)
 {
@@ -4683,6 +4685,7 @@ private:
     // The Pentium SSE2 status register is 32 bits.
     // The ARM and PowerPC FPSCR is a 32-bit register.
     // The SPARC FSR is a 32bit register (64 bits for SPARC 7 & 8, but high bits are uninteresting).
+    // The RISC-V (32 & 64 bit) fcsr is 32-bit register.
     uint flags;
 
     version (CRuntime_Microsoft)
@@ -4987,6 +4990,10 @@ else version (PPC_Any)
 {
     version = IeeeFlagsSupport;
 }
+else version (RISCV_Any)
+{
+    version = IeeeFlagsSupport;
+}
 else version (MIPS_Any)
 {
     version = IeeeFlagsSupport;
@@ -5226,6 +5233,21 @@ struct FloatingPointControl
                                  | inexactException,
         }
     }
+    else version (RISCV_Any)
+    {
+        enum : ExceptionMask
+        {
+            inexactException      = 0x01,
+            divByZeroException    = 0x02,
+            underflowException    = 0x04,
+            overflowException     = 0x08,
+            invalidException      = 0x10,
+            severeExceptions   = overflowException | divByZeroException
+                                 | invalidException,
+            allExceptions      = severeExceptions | underflowException
+                                 | inexactException,
+        }
+    }
     else version (X86_Any)
     {
         enum : ExceptionMask
@@ -5338,6 +5360,10 @@ private:
     {
         alias ControlState = uint;
     }
+    else version (RISCV_Any)
+    {
+        alias ControlState = uint;
+    }
     else version (X86_Any)
     {
         alias ControlState = ushort;
@@ -7595,6 +7621,34 @@ private real polyImpl(real x, in real[] A) @trusted pure nothrow @nogc
                 ;
             }
         }
+        else version (DragonFlyBSD)
+        {
+            asm pure nothrow @nogc // assembler by W. Bright
+            {
+                // EDX = (A.length - 1) * real.sizeof
+                mov     ECX,A[EBP]              ; // ECX = A.length
+                dec     ECX                     ;
+                lea     EDX,[ECX*8]             ;
+                lea     EDX,[EDX][ECX*4]        ;
+                add     EDX,A+4[EBP]            ;
+                fld     real ptr [EDX]          ; // ST0 = coeff[ECX]
+                jecxz   return_ST               ;
+                fld     x[EBP]                  ; // ST0 = x
+                fxch    ST(1)                   ; // ST1 = x, ST0 = r
+                align   4                       ;
+        L2:     fmul    ST,ST(1)                ; // r *= x
+                fld     real ptr -12[EDX]       ;
+                sub     EDX,12                  ; // deg--
+                faddp   ST(1),ST                ;
+                dec     ECX                     ;
+                jne     L2                      ;
+                fxch    ST(1)                   ; // ST1 = r, ST0 = x
+                fstp    ST(0)                   ; // dump x
+                align   4                       ;
+        return_ST:                              ;
+                ;
+            }
+        }
         else
         {
             static assert(0);
diff --git a/libphobos/src/std/parallelism.d b/libphobos/src/std/parallelism.d
index df07baf5ba2..64fa2f93c7e 100644
--- a/libphobos/src/std/parallelism.d
+++ b/libphobos/src/std/parallelism.d
@@ -94,6 +94,10 @@ else version (FreeBSD)
 {
     version = useSysctlbyname;
 }
+else version (DragonFlyBSD)
+{
+    version = useSysctlbyname;
+}
 else version (NetBSD)
 {
     version = useSysctlbyname;
@@ -146,6 +150,10 @@ else version (useSysctlbyname)
         {
             auto nameStr = "hw.ncpu\0".ptr;
         }
+        else version (DragonFlyBSD)
+        {
+            auto nameStr = "hw.ncpu\0".ptr;
+        }
         else version (NetBSD)
         {
             auto nameStr = "hw.ncpu\0".ptr;
diff --git a/libphobos/src/std/path.d b/libphobos/src/std/path.d
index 32870ea118d..4a435efba6c 100644
--- a/libphobos/src/std/path.d
+++ b/libphobos/src/std/path.d
@@ -3970,7 +3970,7 @@ string expandTilde(string inputPath) nothrow
                     }
 
                     if (errno != ERANGE &&
-                        // On FreeBSD and OSX, errno can be left at 0 instead of set to ERANGE
+                        // On BSD and OSX, errno can be left at 0 instead of set to ERANGE
                         errno != 0)
                         onOutOfMemoryError();
 
diff --git a/libphobos/src/std/socket.d b/libphobos/src/std/socket.d
index 78479c85b58..2853dbde0c6 100644
--- a/libphobos/src/std/socket.d
+++ b/libphobos/src/std/socket.d
@@ -187,6 +187,14 @@ string formatSocketError(int err) @trusted
             else
                 return "Socket error " ~ to!string(err);
         }
+        else version (DragonFlyBSD)
+        {
+            auto errs = strerror_r(err, buf.ptr, buf.length);
+            if (errs == 0)
+                cs = buf.ptr;
+            else
+                return "Socket error " ~ to!string(err);
+        }
         else version (Solaris)
         {
             auto errs = strerror_r(err, buf.ptr, buf.length);
diff --git a/libphobos/src/std/stdio.d b/libphobos/src/std/stdio.d
index 91646e79c1a..63bc32e9694 100644
--- a/libphobos/src/std/stdio.d
+++ b/libphobos/src/std/stdio.d
@@ -63,6 +63,12 @@ version (NetBSD)
     version = HAS_GETDELIM;
 }
 
+version (DragonFlyBSD)
+{
+    version = GENERIC_IO;
+    version = HAS_GETDELIM;
+}
+
 version (Solaris)
 {
     version = GENERIC_IO;