d: Merge upstream dmd 001bfd97b, druntime 759e6023, phobos 468788323.

D front-end changes:

    - Import latest changes to mainline.
    - Fix bad format specifiers in front-end errors (PR103840).
    - Refactoring of some leaf modules to the dmd/root package.
    - Updating copyright notice dates and urls.

Phobos changes:

    - Import latest changes to mainline.

gcc/d/ChangeLog:

	PR d/103840
	* dmd/MERGE: Merge upstream dmd 001bfd97b.
	* Make-lang.in (D_FRONTEND_OBJS): Rename d/complex.o to
	d/root-complex.o, and d/utf.o to d/root/utf.o.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 759e6023.
	* src/MERGE: Merge upstream phobos 468788323.

11 files changed, 89 insertions, 55 deletions

diff --git a/libphobos/libdruntime/MERGE b/libphobos/libdruntime/MERGE
index 70f7ff596a8..3aa798a543c 100644
--- a/libphobos/libdruntime/MERGE
+++ b/libphobos/libdruntime/MERGE
@@ -1,4 +1,4 @@
-fd9a45448244fb9dd4326520ad8526c540895eb0
+759e60231a12482a1e1df5f891964e270dae0a1b
 
 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/src/MERGE b/libphobos/src/MERGE
index b517749b542..b60fa170c4c 100644
--- a/libphobos/src/MERGE
+++ b/libphobos/src/MERGE
@@ -1,4 +1,4 @@
-495e835c2da47606142ff24c85de707e3b955a9a
+4687883231eba3bda7691321f2af107fdb3d0a44
 
 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/algorithm/mutation.d b/libphobos/src/std/algorithm/mutation.d
index 22b7b98c229..b0e77076812 100644
--- a/libphobos/src/std/algorithm/mutation.d
+++ b/libphobos/src/std/algorithm/mutation.d
@@ -866,6 +866,9 @@ if (isInputRange!InputRange
 Initializes all elements of `range` with their `.init` value.
 Assumes that the elements of the range are uninitialized.
 
+This function is unavailable if `T` is a `struct` and  `T.this()` is annotated
+with `@disable`.
+
 Params:
         range = An
                 $(REF_ALTTEXT input range, isInputRange, std,range,primitives)
@@ -874,10 +877,11 @@ Params:
 
 See_Also:
         $(LREF fill)
-        $(LREF uninitializeFill)
+        $(LREF uninitializedFill)
  */
 void initializeAll(Range)(Range range)
-if (isInputRange!Range && hasLvalueElements!Range && hasAssignableElements!Range)
+if (isInputRange!Range && hasLvalueElements!Range && hasAssignableElements!Range
+    && __traits(compiles, { static ElementType!Range _; }))
 {
     import core.stdc.string : memset, memcpy;
     import std.traits : hasElaborateAssign, isDynamicArray;
@@ -1037,6 +1041,18 @@ if (is(Range == char[]) || is(Range == wchar[]))
     assert(xs[1].x == 3);
 }
 
+// https://issues.dlang.org/show_bug.cgi?id=22105
+@system unittest
+{
+    struct NoDefaultCtor
+    {
+        @disable this();
+    }
+
+    NoDefaultCtor[1] array = void;
+    static assert(!__traits(compiles, array[].initializeAll));
+}
+
 // move
 /**
 Moves `source` into `target`, via a destructive copy when necessary.
diff --git a/libphobos/src/std/container/array.d b/libphobos/src/std/container/array.d
index 63dc86403ec..08f9ead196e 100644
--- a/libphobos/src/std/container/array.d
+++ b/libphobos/src/std/container/array.d
@@ -428,8 +428,6 @@ if (!is(immutable T == immutable bool))
 
         @property void length(size_t newLength)
         {
-            import std.algorithm.mutation : initializeAll;
-
             if (length >= newLength)
             {
                 // shorten
@@ -440,10 +438,22 @@ if (!is(immutable T == immutable bool))
                 _payload = _payload.ptr[0 .. newLength];
                 return;
             }
-            immutable startEmplace = length;
-            reserve(newLength);
-            initializeAll(_payload.ptr[startEmplace .. newLength]);
-            _payload = _payload.ptr[0 .. newLength];
+
+            static if (__traits(compiles, { static T _; }))
+            {
+                import std.algorithm.mutation : initializeAll;
+
+                immutable startEmplace = length;
+                reserve(newLength);
+                initializeAll(_payload.ptr[startEmplace .. newLength]);
+                _payload = _payload.ptr[0 .. newLength];
+            }
+            else
+            {
+                assert(0, "Cannot add elements to array because `" ~
+                    fullyQualifiedName!T ~ ".this()` is annotated with " ~
+                    "`@disable`.");
+            }
         }
 
         @property size_t capacity() const
@@ -901,12 +911,16 @@ if (!is(immutable T == immutable bool))
     /**
      * Sets the number of elements in the array to `newLength`. If `newLength`
      * is greater than `length`, the new elements are added to the end of the
-     * array and initialized with `T.init`.
+     * array and initialized with `T.init`. If `T` is a `struct` whose default
+     * constructor is annotated with `@disable`, `newLength` must be lower than
+     * or equal to `length`.
      *
      * Complexity:
      * Guaranteed $(BIGOH abs(length - newLength)) if `capacity >= newLength`.
      * If `capacity < newLength` the worst case is $(BIGOH newLength).
      *
+     * Precondition: `__traits(compiles, { static T _; }) || newLength <= length`
+     *
      * Postcondition: `length == newLength`
      */
     @property void length(size_t newLength)
@@ -1708,6 +1722,23 @@ if (!is(immutable T == immutable bool))
     assert(equal(a[], [1,2,3,4,5,6,7,8]));
 }
 
+// https://issues.dlang.org/show_bug.cgi?id=22105
+@system unittest
+{
+    import core.exception : AssertError;
+    import std.exception : assertThrown, assertNotThrown;
+
+    struct NoDefaultCtor
+    {
+        int i;
+        @disable this();
+        this(int j) { i = j; }
+    }
+
+    auto array = Array!NoDefaultCtor([NoDefaultCtor(1), NoDefaultCtor(2)]);
+    assertNotThrown!AssertError(array.length = 1);
+    assertThrown!AssertError(array.length = 5);
+}
 
 ////////////////////////////////////////////////////////////////////////////////
 // Array!bool
diff --git a/libphobos/src/std/conv.d b/libphobos/src/std/conv.d
index d9db9b08d6b..98df7fd1ccf 100644
--- a/libphobos/src/std/conv.d
+++ b/libphobos/src/std/conv.d
@@ -2377,7 +2377,7 @@ Throws:
     A $(LREF ConvException) If an overflow occurred during conversion or
     if no character of the input was meaningfully converted.
 */
-auto parse(Target, Source, Flag!"doCount" doCount = No.doCount)(ref Source s)
+auto parse(Target, Source, Flag!"doCount" doCount = No.doCount)(ref scope Source s)
 if (isSomeChar!(ElementType!Source) &&
     isIntegral!Target && !is(Target == enum))
 {
@@ -2482,7 +2482,7 @@ if (isSomeChar!(ElementType!Source) &&
                 v = -v;
 
             static if (isNarrowString!Source)
-                s = cast(Source) source;
+                s = s[$-source.length..$];
 
             static if (doCount)
             {
diff --git a/libphobos/src/std/format/internal/read.d b/libphobos/src/std/format/internal/read.d
index 102e59fcd5c..9130499081c 100644
--- a/libphobos/src/std/format/internal/read.d
+++ b/libphobos/src/std/format/internal/read.d
@@ -228,26 +228,8 @@ if (isInputRange!Range && is(StringTypeOf!T) && !isAggregateType!T && !is(T == e
 }
 
 T unformatValueImpl(T, Range, Char)(ref Range input, scope const ref FormatSpec!Char fmt)
-if (isInputRange!Range && isArray!T && !is(StringTypeOf!T) && !isAggregateType!T
-    && !is(T == enum))
-{
-    import std.conv : parse, text;
-    import std.format : enforceFmt;
-
-    const spec = fmt.spec;
-    if (spec == '(')
-    {
-        return unformatRange!T(input, fmt);
-    }
-
-    enforceFmt(spec == 's',
-               text("Wrong unformat specifier '%", spec , "' for ", T.stringof));
-
-    return parse!T(input);
-}
-
-T unformatValueImpl(T, Range, Char)(ref Range input, scope const ref FormatSpec!Char fmt)
-if (isInputRange!Range && isAssociativeArray!T && !is(T == enum))
+if (isInputRange!Range && !is(StringTypeOf!T) && !isAggregateType!T
+    && (isArray!T || isAssociativeArray!T || is(T == enum)))
 {
     import std.conv : parse, text;
     import std.format : enforceFmt;
diff --git a/libphobos/src/std/format/read.d b/libphobos/src/std/format/read.d
index 0de88183fb2..b3d8d1f6c3f 100644
--- a/libphobos/src/std/format/read.d
+++ b/libphobos/src/std/format/read.d
@@ -719,3 +719,16 @@ T unformatValue(T, Range, Char)(ref Range input, scope const ref FormatSpec!Char
     int b;
     assertThrown(formattedRead(str, "%s %d-%s", &a, &b, &c));
 }
+
+// https://issues.dlang.org/show_bug.cgi?id=18051
+@safe pure unittest
+{
+    import std.format : format;
+
+    enum Op { lt, gt, eq }
+
+    auto s = format!"%s"(Op.lt);
+    Op op;
+    assert(formattedRead!"%s"(s, op) == 1);
+    assert(op == Op.lt);
+}
diff --git a/libphobos/src/std/sumtype.d b/libphobos/src/std/sumtype.d
index 8242f1e3ee5..658fd384784 100644
--- a/libphobos/src/std/sumtype.d
+++ b/libphobos/src/std/sumtype.d
@@ -1700,7 +1700,6 @@ template match(handlers...)
  * Throws:
  *   [MatchException], if the currently-held type has no matching handler.
  *
- * See_Also: `std.variant.tryVisit`
  * See_Also: $(REF tryVisit, std,variant)
  */
 version (D_Exceptions)
diff --git a/libphobos/src/std/uni/package.d b/libphobos/src/std/uni/package.d
index a27cbea177b..192b6fd2b2d 100644
--- a/libphobos/src/std/uni/package.d
+++ b/libphobos/src/std/uni/package.d
@@ -5798,7 +5798,7 @@ if (is(Char1 : dchar) && is(Char2 : dchar))
 // Utilities for compression of Unicode code point sets
 //============================================================================
 
-@safe void compressTo(uint val, ref ubyte[] arr) pure nothrow
+@safe void compressTo(uint val, ref scope ubyte[] arr) pure nothrow
 {
     // not optimized as usually done 1 time (and not public interface)
     if (val < 128)
@@ -5817,7 +5817,7 @@ if (is(Char1 : dchar) && is(Char2 : dchar))
     }
 }
 
-@safe uint decompressFrom(const(ubyte)[] arr, ref size_t idx) pure
+@safe uint decompressFrom(scope const(ubyte)[] arr, ref size_t idx) pure
 {
     import std.exception : enforce;
     immutable first = arr[idx++];
@@ -8412,7 +8412,7 @@ int hangulSyllableIndex(dchar ch) pure nothrow @nogc @safe
 }
 
 // internal helper: compose hangul syllables leaving dchar.init in holes
-void hangulRecompose(dchar[] seq) pure nothrow @nogc @safe
+void hangulRecompose(scope dchar[] seq) pure nothrow @nogc @safe
 {
     for (size_t idx = 0; idx + 1 < seq.length; )
     {
@@ -8695,7 +8695,7 @@ inout(C)[] normalize(NormalizationForm norm=NFC, C)(return scope inout(C)[] inpu
 }
 
 // canonically recompose given slice of code points, works in-place and mutates data
-private size_t recompose(size_t start, dchar[] input, ubyte[] ccc) pure nothrow @safe
+private size_t recompose(size_t start, scope dchar[] input, scope ubyte[] ccc) pure nothrow @safe
 {
     assert(input.length == ccc.length);
     int accumCC = -1;// so that it's out of 0 .. 255 range
diff --git a/libphobos/src/std/utf.d b/libphobos/src/std/utf.d
index 866ec48cbdc..a29025a179a 100644
--- a/libphobos/src/std/utf.d
+++ b/libphobos/src/std/utf.d
@@ -1168,7 +1168,7 @@ do
 
 /// ditto
 dchar decode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar, S)(
-auto ref S str, ref size_t index) @trusted pure
+auto ref scope S str, ref size_t index) @trusted pure
 if (isSomeString!S)
 in
 {
@@ -1274,7 +1274,7 @@ do
 
 /// ditto
 dchar decodeFront(UseReplacementDchar useReplacementDchar = No.useReplacementDchar, S)(
-ref S str, out size_t numCodeUnits) @trusted pure
+ref scope S str, out size_t numCodeUnits) @trusted pure
 if (isSomeString!S)
 in
 {
@@ -2541,14 +2541,12 @@ size_t encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
         `UTFException` if `c` is not a valid UTF code point.
   +/
 void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
-    ref char[] str, dchar c) @safe pure
+    ref scope char[] str, dchar c) @safe pure
 {
-    char[] r = str;
-
     if (c <= 0x7F)
     {
         assert(isValidDchar(c));
-        r ~= cast(char) c;
+        str ~= cast(char) c;
     }
     else
     {
@@ -2589,9 +2587,8 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
             c = _utfException!useReplacementDchar("Encoding an invalid code point in UTF-8", c);
             goto L3;
         }
-        r ~= buf[0 .. L];
+        str ~= buf[0 .. L];
     }
-    str = r;
 }
 
 ///
@@ -2666,10 +2663,8 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
 
 /// ditto
 void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
-    ref wchar[] str, dchar c) @safe pure
+    ref scope wchar[] str, dchar c) @safe pure
 {
-    wchar[] r = str;
-
     if (c <= 0xFFFF)
     {
         if (0xD800 <= c && c <= 0xDFFF)
@@ -2677,7 +2672,7 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
 
         assert(isValidDchar(c));
     L1:
-        r ~= cast(wchar) c;
+        str ~= cast(wchar) c;
     }
     else if (c <= 0x10FFFF)
     {
@@ -2686,7 +2681,7 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
         assert(isValidDchar(c));
         buf[0] = cast(wchar)((((c - 0x10000) >> 10) & 0x3FF) + 0xD800);
         buf[1] = cast(wchar)(((c - 0x10000) & 0x3FF) + 0xDC00);
-        r ~= buf;
+        str ~= buf;
     }
     else
     {
@@ -2694,8 +2689,6 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
         c = _utfException!useReplacementDchar("Encoding an invalid code point in UTF-16", c);
         goto L1;
     }
-
-    str = r;
 }
 
 @safe unittest
@@ -2727,7 +2720,7 @@ void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
 
 /// ditto
 void encode(UseReplacementDchar useReplacementDchar = No.useReplacementDchar)(
-    ref dchar[] str, dchar c) @safe pure
+    ref scope dchar[] str, dchar c) @safe pure
 {
     if ((0xD800 <= c && c <= 0xDFFF) || 0x10FFFF < c)
         c = _utfException!useReplacementDchar("Encoding an invalid code point in UTF-32", c);
diff --git a/libphobos/src/std/xml.d b/libphobos/src/std/xml.d
index 37fab6db038..fdfdc3f70ab 100644
--- a/libphobos/src/std/xml.d
+++ b/libphobos/src/std/xml.d
@@ -433,7 +433,7 @@ enum DecodeMode
  * writefln(decode("a &gt; b")); // writes "a > b"
  * --------------
  */
-string decode(return scope string s, DecodeMode mode=DecodeMode.LOOSE) @safe pure
+string decode(string s, DecodeMode mode=DecodeMode.LOOSE) @safe pure
 {
     import std.algorithm.searching : startsWith;