d: Merge upstream dmd 3982604c5, druntime bc58b1e9, phobos 12329adb6.

D front-end changes:

    - Import dmd mainline development.
    - Split off enum EXP from enum TOK.
    - Integer promotions now follow C integral promotions by default.
    - Implements __traits(initSymbol).
    - Lowering of array construction has been moved to the dmd
      front-end.
    - Fix segfault in dmd.lexer from unaligned read (PR103529).

Druntime changes:

    - Import druntime mainline development.
    - Define SIG_BLOCK for Solaris (PR103528).

Phobos changes:

    - Import phobos mainline development.

gcc/d/ChangeLog:

	PR d/103529
	* dmd/MERGE: Merge upstream dmd 3982604c5.
	* Make-lang.in (D_FRONTEND_OBJS): Add d/root-optional.o.
	* d-attribs.cc (build_attributes): Update for new front-end interface.
	* d-codegen.cc (d_build_call): Likewise.
	* d-compiler.cc (Compiler::paintAsType): Likewise.
	* d-lang.cc (d_handle_option): Remove OPT_fpreview_intpromote, add
	handling of OPT_frevert_intpromote.
	* d-port.cc (Port::valcpy): Assert buffer is aligned.
	* d-target.cc (Target::isVectorOpSupported): Update for new front-end
	interface.
	* decl.cc (layout_class_initializer): Likewise.
	* expr.cc (lvalue_p): Likewise.
	(binop_assignment): Likewise.
	(ExprVisitor::visit): Likewise.
	(ExprVisitor::visit (AssignExp *)): Remove generation of _d_arrayctor
	and _d_arraysetctor library helpers.
	(ExprVisitor::visit (VarExp *)): Support __traits(initSymbol).
	* intrinsics.cc (expand_intrinsic_rotate): Update for new front-end
	interface.
	* lang.opt (fpreview=intpromote): Remove.
	(frevert=intpromote): New.
	* runtime.def (ARRAYCTOR): Remove.
	(ARRAYSETCTOR): Remove.
	* toir.cc (IRVisitor::visit): Update for new front-end interface.
	* types.cc (layout_aggregate_members): Likewise.
	* dmd/root/optional.d: New file.
	* dmd/root/optional.h: New file.

libphobos/ChangeLog:

	PR d/103528
	* libdruntime/MERGE: Merge upstream druntime bc58b1e9.
	* libdruntime/Makefile.am (DRUNTIME_DSOURCES_LINUX): Remove
	core/sys/linux/syscalls.d.
	* libdruntime/Makefile.in: Regenerate.
	* src/MERGE: Merge upstream phobos 12329adb6.
	* testsuite/libphobos.config/config.exp: Add test22523.
	* libdruntime/core/sys/linux/syscalls.d: Removed.
	* testsuite/libphobos.config/test22523.d: New test.

3 files changed, 54 insertions, 53 deletions

diff --git a/libphobos/src/std/datetime/interval.d b/libphobos/src/std/datetime/interval.d
index 741088a..ba2a210 100644
--- a/libphobos/src/std/datetime/interval.d
+++ b/libphobos/src/std/datetime/interval.d
@@ -8349,7 +8349,7 @@ private:
     }
 
     {
-        SysTime stFunc(scope const SysTime st) { return cast(SysTime) st; }
+        SysTime stFunc(scope const SysTime st) { return SysTime.init; }
         auto interval = Interval!SysTime(SysTime(DateTime(2010, 7, 4, 12, 1, 7)),
                                          SysTime(DateTime(2012, 1, 7, 14, 0, 0)));
         auto ir = IntervalRange!(SysTime, Direction.fwd)(interval, &stFunc);
@@ -8794,7 +8794,7 @@ private:
     }
 
     {
-        SysTime stFunc(scope const SysTime st) { return cast(SysTime) st; }
+        SysTime stFunc(scope const SysTime st) { return SysTime.init; }
         auto posInfInterval = PosInfInterval!SysTime(SysTime(DateTime(2010, 7, 4, 12, 1, 7)));
         auto ir = PosInfIntervalRange!SysTime(posInfInterval, &stFunc);
     }
@@ -9076,7 +9076,7 @@ private:
     }
 
     {
-        SysTime stFunc(scope const SysTime st) { return cast(SysTime)(st); }
+        SysTime stFunc(scope const SysTime st) { return SysTime.init; }
         auto negInfInterval = NegInfInterval!SysTime(SysTime(DateTime(2012, 1, 7, 14, 0, 0)));
         auto ir = NegInfIntervalRange!(SysTime)(negInfInterval, &stFunc);
     }
diff --git a/libphobos/src/std/datetime/systime.d b/libphobos/src/std/datetime/systime.d
index 4da1281..9b2a844 100644
--- a/libphobos/src/std/datetime/systime.d
+++ b/libphobos/src/std/datetime/systime.d
@@ -503,7 +503,7 @@ public:
                        given $(REF DateTime,std,datetime,date) is assumed to
                        be in the given time zone.
       +/
-    this(DateTime dateTime, immutable TimeZone tz = null) @safe nothrow
+    this(DateTime dateTime, return scope immutable TimeZone tz = null) return scope @safe nothrow
     {
         try
             this(dateTime, Duration.zero, tz);
@@ -554,7 +554,7 @@ public:
             $(REF DateTimeException,std,datetime,date) if `fracSecs` is negative or if it's
             greater than or equal to one second.
       +/
-    this(DateTime dateTime, Duration fracSecs, immutable TimeZone tz = null) @safe
+    this(DateTime dateTime, Duration fracSecs, return scope immutable TimeZone tz = null) return scope @safe
     {
         enforce(fracSecs >= Duration.zero, new DateTimeException("A SysTime cannot have negative fractional seconds."));
         enforce(fracSecs < seconds(1), new DateTimeException("Fractional seconds must be less than one second."));
@@ -611,7 +611,7 @@ public:
                    given $(REF Date,std,datetime,date) is assumed to be in the
                    given time zone.
       +/
-    this(Date date, immutable TimeZone tz = null) @safe nothrow
+    this(Date date, return scope immutable TimeZone tz = null) return scope @safe nothrow
     {
         _timezone = tz is null ? LocalTime() : tz;
 
@@ -664,7 +664,7 @@ public:
                       $(LREF SysTime). If null,
                       $(REF LocalTime,std,datetime,timezone) will be used.
       +/
-    this(long stdTime, immutable TimeZone tz = null) @safe pure nothrow
+    this(long stdTime, return scope immutable TimeZone tz = null) return scope @safe pure nothrow
     {
         _stdTime = stdTime;
         _timezone = tz is null ? LocalTime() : tz;
@@ -693,7 +693,7 @@ public:
 
         Returns: The `this` of this `SysTime`.
       +/
-    ref SysTime opAssign()(auto ref const(SysTime) rhs) return @safe pure nothrow scope
+    ref SysTime opAssign()(auto ref const(SysTime) rhs) return scope @safe pure nothrow
     {
         _stdTime = rhs._stdTime;
         _timezone = rhs._timezone;
@@ -710,6 +710,7 @@ public:
         st = other;
         assert(st == other);
 
+        version (none) // https://issues.dlang.org/show_bug.cgi?id=21175
         static void testScope(scope ref SysTime left, const scope SysTime right) @safe
         {
             left = right;
@@ -2184,7 +2185,7 @@ public:
         hours - adjust the time to this $(LREF SysTime)'s time zone before
         returning.
       +/
-    @property immutable(TimeZone) timezone() @safe const pure nothrow scope
+    @property immutable(TimeZone) timezone() @safe const pure nothrow return scope
     {
         return _timezone;
     }
@@ -2238,7 +2239,7 @@ public:
     /++
         Returns whether DST is in effect for this $(LREF SysTime).
       +/
-    @property bool dstInEffect() @safe const nothrow scope
+    @property bool dstInEffect() @safe const nothrow return scope
     {
         return _timezone.dstInEffect(_stdTime);
     }
@@ -2261,7 +2262,7 @@ public:
         Returns what the offset from UTC is for this $(LREF SysTime).
         It includes the DST offset in effect at that time (if any).
       +/
-    @property Duration utcOffset() @safe const nothrow scope
+    @property Duration utcOffset() @safe const nothrow return scope
     {
         return _timezone.utcOffsetAt(_stdTime);
     }
@@ -9586,13 +9587,13 @@ private:
 
         @property override bool hasDST() @safe const nothrow @nogc { return false; }
 
-        override bool dstInEffect(long stdTime) @safe const nothrow @nogc { return false; }
+        override bool dstInEffect(long stdTime) @safe const scope nothrow @nogc { return false; }
 
-        override long utcToTZ(long stdTime) @safe const nothrow @nogc { return 0; }
+        override long utcToTZ(long stdTime) @safe const scope nothrow @nogc { return 0; }
 
-        override long tzToUTC(long adjTime) @safe const nothrow @nogc { return 0; }
+        override long tzToUTC(long adjTime) @safe const scope nothrow @nogc { return 0; }
 
-        override Duration utcOffsetAt(long stdTime) @safe const nothrow @nogc { return Duration.zero; }
+        override Duration utcOffsetAt(long stdTime) @safe const scope nothrow @nogc { return Duration.zero; }
 
     private:
 
@@ -9628,7 +9629,7 @@ private:
         return _timezoneStorage is null ? InitTimeZone() : _timezoneStorage;
     }
 
-    pragma(inline, true) @property void _timezone(immutable TimeZone tz) @safe pure nothrow @nogc scope
+    pragma(inline, true) @property void _timezone(return scope immutable TimeZone tz) @safe pure nothrow @nogc scope
     {
         _timezoneStorage = tz;
     }
diff --git a/libphobos/src/std/datetime/timezone.d b/libphobos/src/std/datetime/timezone.d
index 0527580..a55411b 100644
--- a/libphobos/src/std/datetime/timezone.d
+++ b/libphobos/src/std/datetime/timezone.d
@@ -100,7 +100,7 @@ public:
         However, on Windows, it may be the unabbreviated name (e.g. Pacific
         Standard Time). Regardless, it is not the same as name.
       +/
-    @property string stdName() @safe const nothrow
+    @property string stdName() @safe const scope nothrow
     {
         return _stdName;
     }
@@ -113,7 +113,7 @@ public:
         However, on Windows, it may be the unabbreviated name (e.g. Pacific
         Daylight Time). Regardless, it is not the same as name.
       +/
-    @property string dstName() @safe const nothrow
+    @property string dstName() @safe const scope nothrow
     {
         return _dstName;
     }
@@ -137,7 +137,7 @@ public:
             stdTime = The UTC time that needs to be checked for DST in this time
                       zone.
       +/
-    abstract bool dstInEffect(long stdTime) @safe const nothrow;
+    abstract bool dstInEffect(long stdTime) @safe const scope nothrow;
 
 
     /++
@@ -148,7 +148,7 @@ public:
             stdTime = The UTC time that needs to be adjusted to this time zone's
                       time.
       +/
-    abstract long utcToTZ(long stdTime) @safe const nothrow;
+    abstract long utcToTZ(long stdTime) @safe const scope nothrow;
 
 
     /++
@@ -159,7 +159,7 @@ public:
             adjTime = The time in this time zone that needs to be adjusted to
                       UTC time.
       +/
-    abstract long tzToUTC(long adjTime) @safe const nothrow;
+    abstract long tzToUTC(long adjTime) @safe const scope nothrow;
 
 
     /++
@@ -170,7 +170,7 @@ public:
             stdTime = The UTC time for which to get the offset from UTC for this
                       time zone.
       +/
-    Duration utcOffsetAt(long stdTime) @safe const nothrow
+    Duration utcOffsetAt(long stdTime) @safe const scope nothrow
     {
         return dur!"hnsecs"(utcToTZ(stdTime) - stdTime);
     }
@@ -580,7 +580,7 @@ public:
         dynamically rather than it being fixed like it would be with most time
         zones.
       +/
-    @property override string stdName() @trusted const nothrow
+    @property override string stdName() @trusted const scope nothrow
     {
         version (Posix)
         {
@@ -665,7 +665,7 @@ public:
         dynamically rather than it being fixed like it would be with most time
         zones.
       +/
-    @property override string dstName() @trusted const nothrow
+    @property override string dstName() @trusted const scope nothrow
     {
         version (Posix)
         {
@@ -809,7 +809,7 @@ public:
             stdTime = The UTC time that needs to be checked for DST in this time
                       zone.
       +/
-    override bool dstInEffect(long stdTime) @trusted const nothrow
+    override bool dstInEffect(long stdTime) @trusted const scope nothrow
     {
         import core.stdc.time : tm;
 
@@ -863,7 +863,7 @@ public:
         See_Also:
             `TimeZone.utcToTZ`
       +/
-    override long utcToTZ(long stdTime) @trusted const nothrow
+    override long utcToTZ(long stdTime) @trusted const scope nothrow
     {
         version (Solaris)
             return stdTime + convert!("seconds", "hnsecs")(tm_gmtoff(stdTime));
@@ -904,7 +904,7 @@ public:
             adjTime = The time in this time zone that needs to be adjusted to
                       UTC time.
       +/
-    override long tzToUTC(long adjTime) @trusted const nothrow
+    override long tzToUTC(long adjTime) @trusted const scope nothrow
     {
         version (Posix)
         {
@@ -1159,7 +1159,7 @@ public:
     /++
         Always returns false.
       +/
-    override bool dstInEffect(long stdTime) @safe const nothrow
+    override bool dstInEffect(long stdTime) @safe const scope nothrow
     {
         return false;
     }
@@ -1175,7 +1175,7 @@ public:
         See_Also:
             `TimeZone.utcToTZ`
       +/
-    override long utcToTZ(long stdTime) @safe const nothrow
+    override long utcToTZ(long stdTime) @safe const scope nothrow
     {
         return stdTime;
     }
@@ -1208,7 +1208,7 @@ public:
             adjTime = The time in this time zone that needs to be adjusted to
                       UTC time.
       +/
-    override long tzToUTC(long adjTime) @safe const nothrow
+    override long tzToUTC(long adjTime) @safe const scope nothrow
     {
         return adjTime;
     }
@@ -1238,7 +1238,7 @@ public:
             stdTime = The UTC time for which to get the offset from UTC for this
                       time zone.
       +/
-    override Duration utcOffsetAt(long stdTime) @safe const nothrow
+    override Duration utcOffsetAt(long stdTime) @safe const scope nothrow
     {
         return dur!"hnsecs"(0);
     }
@@ -1285,7 +1285,7 @@ public:
     /++
         Always returns false.
       +/
-    override bool dstInEffect(long stdTime) @safe const nothrow
+    override bool dstInEffect(long stdTime) @safe const scope nothrow
     {
         return false;
     }
@@ -1299,7 +1299,7 @@ public:
             stdTime = The UTC time that needs to be adjusted to this time zone's
                       time.
       +/
-    override long utcToTZ(long stdTime) @safe const nothrow
+    override long utcToTZ(long stdTime) @safe const scope nothrow
     {
         return stdTime + _utcOffset.total!"hnsecs";
     }
@@ -1326,7 +1326,7 @@ public:
             adjTime = The time in this time zone that needs to be adjusted to
                       UTC time.
       +/
-    override long tzToUTC(long adjTime) @safe const nothrow
+    override long tzToUTC(long adjTime) @safe const scope nothrow
     {
         return adjTime - _utcOffset.total!"hnsecs";
     }
@@ -1352,7 +1352,7 @@ public:
             stdTime = The UTC time for which to get the offset from UTC for this
                       time zone.
       +/
-    override Duration utcOffsetAt(long stdTime) @safe const nothrow
+    override Duration utcOffsetAt(long stdTime) @safe const scope nothrow
     {
         return _utcOffset;
     }
@@ -1919,7 +1919,7 @@ public:
             stdTime = The UTC time that needs to be checked for DST in this time
                       zone.
       +/
-    override bool dstInEffect(long stdTime) @safe const nothrow
+    override bool dstInEffect(long stdTime) @safe const scope nothrow
     {
         assert(!_transitions.empty);
 
@@ -1943,7 +1943,7 @@ public:
             stdTime = The UTC time that needs to be adjusted to this time zone's
                       time.
       +/
-    override long utcToTZ(long stdTime) @safe const nothrow
+    override long utcToTZ(long stdTime) @safe const scope nothrow
     {
         assert(!_transitions.empty);
 
@@ -1968,7 +1968,7 @@ public:
             adjTime = The time in this time zone that needs to be adjusted to
                       UTC time.
       +/
-    override long tzToUTC(long adjTime) @safe const nothrow
+    override long tzToUTC(long adjTime) @safe const scope nothrow
     {
         assert(!_transitions.empty, "UTC offset's not available");
 
@@ -2691,7 +2691,7 @@ private:
     }
 
 
-    int calculateLeapSeconds(long stdTime) @safe const pure nothrow
+    int calculateLeapSeconds(long stdTime) @safe const scope pure nothrow
     {
         if (_leapSeconds.empty)
             return 0;
@@ -2864,7 +2864,7 @@ version (StdDdoc)
             current dates but will still return true for `hasDST` because the
             time zone did at some point have DST.
           +/
-        @property override bool hasDST() @safe const nothrow;
+        @property override bool hasDST() @safe const scope nothrow;
 
 
         /++
@@ -2876,7 +2876,7 @@ version (StdDdoc)
                 stdTime = The UTC time that needs to be checked for DST in this
                           time zone.
           +/
-        override bool dstInEffect(long stdTime) @safe const nothrow;
+        override bool dstInEffect(long stdTime) @safe const scope nothrow;
 
 
         /++
@@ -2888,7 +2888,7 @@ version (StdDdoc)
                 stdTime = The UTC time that needs to be adjusted to this time
                           zone's time.
           +/
-        override long utcToTZ(long stdTime) @safe const nothrow;
+        override long utcToTZ(long stdTime) @safe const scope nothrow;
 
 
         /++
@@ -2900,7 +2900,7 @@ version (StdDdoc)
                 adjTime = The time in this time zone that needs to be adjusted
                           to UTC time.
           +/
-        override long tzToUTC(long adjTime) @safe const nothrow;
+        override long tzToUTC(long adjTime) @safe const scope nothrow;
 
 
         /++
@@ -2945,9 +2945,9 @@ version (StdDdoc)
         else
             alias TIME_ZONE_INFORMATION = void*;
 
-        static bool _dstInEffect(const TIME_ZONE_INFORMATION* tzInfo, long stdTime) nothrow;
-        static long _utcToTZ(const TIME_ZONE_INFORMATION* tzInfo, long stdTime, bool hasDST) nothrow;
-        static long _tzToUTC(const TIME_ZONE_INFORMATION* tzInfo, long adjTime, bool hasDST) nothrow;
+        static bool _dstInEffect(const scope TIME_ZONE_INFORMATION* tzInfo, long stdTime) nothrow;
+        static long _utcToTZ(const scope TIME_ZONE_INFORMATION* tzInfo, long stdTime, bool hasDST) nothrow;
+        static long _tzToUTC(const scope TIME_ZONE_INFORMATION* tzInfo, long adjTime, bool hasDST) nothrow;
 
         this() immutable pure
         {
@@ -2967,25 +2967,25 @@ else version (Windows)
 
     public:
 
-        @property override bool hasDST() @safe const nothrow
+        @property override bool hasDST() @safe const scope nothrow
         {
             return _tzInfo.DaylightDate.wMonth != 0;
         }
 
 
-        override bool dstInEffect(long stdTime) @safe const nothrow
+        override bool dstInEffect(long stdTime) @safe const scope nothrow
         {
             return _dstInEffect(&_tzInfo, stdTime);
         }
 
 
-        override long utcToTZ(long stdTime) @safe const nothrow
+        override long utcToTZ(long stdTime) @safe const scope nothrow
         {
             return _utcToTZ(&_tzInfo, stdTime, hasDST);
         }
 
 
-        override long tzToUTC(long adjTime) @safe const nothrow
+        override long tzToUTC(long adjTime) @safe const scope nothrow
         {
             return _tzToUTC(&_tzInfo, adjTime, hasDST);
         }
@@ -3071,7 +3071,7 @@ else version (Windows)
 
     private:
 
-        static bool _dstInEffect(const TIME_ZONE_INFORMATION* tzInfo, long stdTime) @trusted nothrow
+        static bool _dstInEffect(const scope TIME_ZONE_INFORMATION* tzInfo, long stdTime) @trusted nothrow
         {
             try
             {
@@ -3155,7 +3155,7 @@ else version (Windows)
         }
 
 
-        static long _utcToTZ(const TIME_ZONE_INFORMATION* tzInfo, long stdTime, bool hasDST) @safe nothrow
+        static long _utcToTZ(const scope TIME_ZONE_INFORMATION* tzInfo, long stdTime, bool hasDST) @safe nothrow
         {
             if (hasDST && WindowsTimeZone._dstInEffect(tzInfo, stdTime))
                 return stdTime - convert!("minutes", "hnsecs")(tzInfo.Bias + tzInfo.DaylightBias);
@@ -3164,7 +3164,7 @@ else version (Windows)
         }
 
 
-        static long _tzToUTC(const TIME_ZONE_INFORMATION* tzInfo, long adjTime, bool hasDST) @trusted nothrow
+        static long _tzToUTC(const scope TIME_ZONE_INFORMATION* tzInfo, long adjTime, bool hasDST) @trusted nothrow
         {
             if (hasDST)
             {