d: Merge upstream dmd, druntime c8ae4adb2e, phobos 792c8b7c1.

D front-end changes:

	- Import dmd v2.101.0.
	- Deprecate the ability to call `__traits(getAttributes)' on
	  overload sets.
	- Deprecate non-empty `for' statement increment clause with no
	  effect.
	- Array literals assigned to `scope' array variables can now be
	  allocated on the stack.

D runtime changes:

	- Import druntime v2.101.0.

Phobos changes:

	- Import phobos v2.101.0.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd c8ae4adb2e.
	* typeinfo.cc (check_typeinfo_type): Update for new front-end
	interface.
	(TypeInfoVisitor::visit (TypeInfoStructDeclaration *)): Remove warning
	that toHash() must be declared 'nothrow @safe`.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime c8ae4adb2e.
	* src/MERGE: Merge upstream phobos 792c8b7c1.

1 files changed, 24 insertions, 2 deletions

diff --git a/libphobos/src/std/range/package.d b/libphobos/src/std/range/package.d
index 9197134..888ac1a 100644
--- a/libphobos/src/std/range/package.d
+++ b/libphobos/src/std/range/package.d
@@ -3774,10 +3774,17 @@ private:
         alias fun = Fun[0];
 
     enum returnByRef_ = (functionAttributes!fun & FunctionAttribute.ref_) ? true : false;
+
+    import std.traits : hasIndirections;
+    static if (!hasIndirections!(ReturnType!fun))
+        alias RetType = Unqual!(ReturnType!fun);
+    else
+        alias RetType = ReturnType!fun;
+
     static if (returnByRef_)
-        ReturnType!fun *elem_;
+        RetType *elem_;
     else
-        ReturnType!fun elem_;
+        RetType elem_;
 public:
     /// Range primitives
     enum empty = false;
@@ -3866,6 +3873,13 @@ public:
     assert(g.front == f + 5);
 }
 
+// https://issues.dlang.org/show_bug.cgi?id=23319
+@safe pure nothrow unittest
+{
+    auto b = generate!(() => const(int)(42));
+    assert(b.front == 42);
+}
+
 /**
 Repeats the given forward range ad infinitum. If the original range is
 infinite (fact that would make `Cycle` the identity application),
@@ -6856,6 +6870,7 @@ if (!isIntegral!(CommonType!(B, E)) &&
             assert(!empty);
             ++current;
         }
+        @property auto save() { return this; }
     }
     return Result(begin, end);
 }
@@ -6890,6 +6905,13 @@ if (!isIntegral!(CommonType!(B, E)) &&
     assert(i2.equal([3, 4, 0, 1 ]));
 }
 
+// https://issues.dlang.org/show_bug.cgi?id=23453
+@safe unittest
+{
+    auto r = iota('a', 'z');
+    static assert(isForwardRange!(typeof(r)));
+}
+
 /**
    Options for the $(LREF FrontTransversal) and $(LREF Transversal) ranges
    (below).