d: Merge upstream dmd, druntime a88e1335f7, phobos 1921d29df.

D front-end changes:

	- Import dmd v2.104.1.
	- Deprecation phase ended for access to private method when
	  overloaded with public method.

D runtime changes:

	- Import druntime v2.104.1.
	- Linux input header translations were added to druntime.
	- Integration with the Valgrind `memcheck' tool has been added
	  to the garbage collector.

Phobos changes:

	- Import phobos v2.104.1.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd a88e1335f7.
	* dmd/VERSION: Bump version to v2.104.1.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime a88e1335f7.
	* src/MERGE: Merge upstream phobos 1921d29df.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (libphobos-checking): Add valgrind flag.
	(DRUNTIME_LIBRARIES_VALGRIND): Call.
	* libdruntime/Makefile.am (DRUNTIME_CSOURCES): Add
	etc/valgrind/valgrind_.c.
	(DRUNTIME_DSOURCES): Add etc/valgrind/valgrind.d.
	(DRUNTIME_DSOURCES_LINUX): Add core/sys/linux/input.d,
	core/sys/linux/input_event_codes.d, core/sys/linux/uinput.d.
	* libdruntime/Makefile.in: Regenerate.
	* m4/druntime/libraries.m4 (DRUNTIME_LIBRARIES_VALGRIND): Define.

3 files changed, 23 insertions, 31 deletions

diff --git a/libphobos/src/std/algorithm/iteration.d b/libphobos/src/std/algorithm/iteration.d
index 55ccb51..39927be 100644
--- a/libphobos/src/std/algorithm/iteration.d
+++ b/libphobos/src/std/algorithm/iteration.d
@@ -2026,7 +2026,7 @@ private struct ChunkByGroup(alias eq, Range, bool eqEquivalenceAssured)
         }
     }
 
-    // Cannot be a copy constructor due to issue 22239
+    // Cannot be a copy constructor due to https://issues.dlang.org/show_bug.cgi?id=22239
     this(this) @trusted
     {
         import core.lifetime : emplace;
@@ -2128,7 +2128,7 @@ if (isForwardRange!Range)
         }();
     }
 
-    // Cannot be a copy constructor due to issue 22239
+    // Cannot be a copy constructor due to https://issues.dlang.org/show_bug.cgi?id=22239
     this(this) @trusted
     {
         import core.lifetime : emplace;
diff --git a/libphobos/src/std/algorithm/mutation.d b/libphobos/src/std/algorithm/mutation.d
index 9b1d920..61b6a5e 100644
--- a/libphobos/src/std/algorithm/mutation.d
+++ b/libphobos/src/std/algorithm/mutation.d
@@ -3049,7 +3049,7 @@ if (isBlitAssignable!T && !is(typeof(lhs.proxySwap(rhs))))
     swap(b1, b2);
 }
 
-// issue 20732
+// https://issues.dlang.org/show_bug.cgi?id=20732
 @safe unittest
 {
     static struct A
diff --git a/libphobos/src/std/algorithm/searching.d b/libphobos/src/std/algorithm/searching.d
index ee318c8..f061915 100644
--- a/libphobos/src/std/algorithm/searching.d
+++ b/libphobos/src/std/algorithm/searching.d
@@ -1282,7 +1282,7 @@ if (isInputRange!R &&
 
 @safe pure unittest
 {
-    //example from issue 19727
+    //example from https://issues.dlang.org/show_bug.cgi?id=19727
     import std.path : asRelativePath;
     string[] ext = ["abc", "def", "ghi"];
     string path = "/foo/file.def";
@@ -1315,19 +1315,12 @@ in
 }
 do
 {
-    import std.typecons : Rebindable;
+    import std.typecons : Rebindable2;
 
     alias Element = ElementType!Range;
-    Rebindable!Element seed = r.front;
+    auto seed = Rebindable2!Element(r.front);
     r.popFront();
-    static if (is(Rebindable!Element == T[], T))
-    {
-        return extremum!(map, selector)(r, seed);
-    }
-    else
-    {
-        return extremum!(map, selector)(r, seed.get);
-    }
+    return extremum!(map, selector)(r, seed.get);
 }
 
 private auto extremum(alias map, alias selector = "a < b", Range,
@@ -1337,25 +1330,24 @@ if (isInputRange!Range && !isInfinite!Range &&
     !is(CommonType!(ElementType!Range, RangeElementType) == void) &&
      is(typeof(unaryFun!map(ElementType!(Range).init))))
 {
-    import std.typecons : Rebindable;
+    import std.typecons : Rebindable2;
 
     alias mapFun = unaryFun!map;
     alias selectorFun = binaryFun!selector;
 
     alias Element = ElementType!Range;
     alias CommonElement = CommonType!(Element, RangeElementType);
-    Rebindable!CommonElement extremeElement = seedElement;
+    auto extremeElement = Rebindable2!CommonElement(seedElement);
 
     // if we only have one statement in the loop, it can be optimized a lot better
     static if (__traits(isSame, map, a => a))
     {
-
         // direct access via a random access range is faster
         static if (isRandomAccessRange!Range)
         {
             foreach (const i; 0 .. r.length)
             {
-                if (selectorFun(r[i], extremeElement))
+                if (selectorFun(r[i], extremeElement.get))
                 {
                     extremeElement = r[i];
                 }
@@ -1365,7 +1357,7 @@ if (isInputRange!Range && !isInfinite!Range &&
         {
             while (!r.empty)
             {
-                if (selectorFun(r.front, extremeElement))
+                if (selectorFun(r.front, extremeElement.get))
                 {
                     extremeElement = r.front;
                 }
@@ -1376,7 +1368,7 @@ if (isInputRange!Range && !isInfinite!Range &&
     else
     {
         alias MapType = Unqual!(typeof(mapFun(CommonElement.init)));
-        MapType extremeElementMapped = mapFun(extremeElement);
+        MapType extremeElementMapped = mapFun(extremeElement.get);
 
         // direct access via a random access range is faster
         static if (isRandomAccessRange!Range)
@@ -1405,15 +1397,7 @@ if (isInputRange!Range && !isInfinite!Range &&
             }
         }
     }
-    // Rebindable is an alias to T for arrays
-    static if (is(typeof(extremeElement) == T[], T))
-    {
-        return extremeElement;
-    }
-    else
-    {
-        return extremeElement.get;
-    }
+    return extremeElement.get;
 }
 
 private auto extremum(alias selector = "a < b", Range)(Range r)
@@ -2309,7 +2293,7 @@ private R1 simpleMindedFind(alias pred, R1, R2)(R1 haystack, scope R2 needle)
     @safe:
         string _impl;
 
-        // This is what triggers issue 7992.
+        // This is what triggers https://issues.dlang.org/show_bug.cgi?id=7992.
         @property size_t length() const { return _impl.length; }
         @property void length(size_t len) { _impl.length = len; }
 
@@ -2322,7 +2306,7 @@ private R1 simpleMindedFind(alias pred, R1, R2)(R1 haystack, scope R2 needle)
         @property CustomString save() { return this; }
     }
 
-    // If issue 7992 occurs, this will throw an exception from calling
+    // If https://issues.dlang.org/show_bug.cgi?id=7992 occurs, this will throw an exception from calling
     // popFront() on an empty range.
     auto r = find(CustomString("a"), CustomString("b"));
     assert(r.empty);
@@ -3880,6 +3864,14 @@ if (isInputRange!Range && !isInfinite!Range &&
     assert(arr.maxElement!"a.val".val == 1);
 }
 
+// https://issues.dlang.org/show_bug.cgi?id=23993
+@safe unittest
+{
+    import std.bigint : BigInt;
+
+    assert([BigInt(2), BigInt(3)].maxElement == BigInt(3));
+}
+
 // minPos
 /**
 Computes a subrange of `range` starting at the first occurrence of `range`'s