make @safe

Signed-off-by: denisa.ciobanu1208 <denisa.ciobanu1208@stud.acs.upb.ro>

Author: denisa.ciobanu1208

std/experimental/allocator/building_blocks/kernighan_ritchie.d

@@ -111,21 +111,21 @@ struct KRRegion(ParentAllocator = NullAllocator)
 
         this(this) @disable;
 
-        pure nothrow @trusted @nogc
+        pure nothrow @safe @nogc
         void[] payload() inout
         {
             return (cast(ubyte*) &this)[0 .. size];
         }
 
-        pure nothrow @trusted @nogc
+        pure nothrow @safe @nogc
         bool adjacent(in Node* right) const
         {
             assert(right);
             auto p = payload;
             return p.ptr < right && right < p.ptr + p.length + Node.sizeof;
         }
 
-        pure nothrow @trusted @nogc
+        pure nothrow @safe @nogc
         bool coalesce(void* memoryEnd = null)
         {
             // Coalesce the last node before the memory end with any possible gap
@@ -156,7 +156,7 @@ struct KRRegion(ParentAllocator = NullAllocator)
             if (leftover >= Node.sizeof)
             {
                 // There's room for another node
-                auto newNode = (() @trusted => cast(Node*) ((cast(ubyte*) &this) + bytes))();
+                auto newNode = (() @safe => cast(Node*) ((cast(ubyte*) &this) + bytes))();
                 newNode.size = leftover;
                 newNode.next = next == &this ? newNode : next;
                 assert(next);
@@ -418,7 +418,7 @@ struct KRRegion(ParentAllocator = NullAllocator)
                 immutable balance = root.size - actualBytes;
                 if (balance >= Node.sizeof)
                 {
-                    auto newRoot = (() @trusted => cast(Node*) (result + actualBytes))();
+                    auto newRoot = (() @safe => cast(Node*) (result + actualBytes))();
                     newRoot.next = root.next;
                     newRoot.size = balance;
                     root = newRoot;
@@ -428,7 +428,7 @@ struct KRRegion(ParentAllocator = NullAllocator)
                     root = null;
                     switchToFreeList;
                 }
-                return (() @trusted => result[0 .. n])();
+                return (() @safe => result[0 .. n])();
             }
 
             // Not enough memory, switch to freelist mode and fall through
@@ -604,7 +604,7 @@ struct KRRegion(ParentAllocator = NullAllocator)
     It does a simple $(BIGOH 1) range check. `b` should be a buffer either
     allocated with `this` or obtained through other means.
     */
-    pure nothrow @trusted @nogc
+    pure nothrow @safe @nogc
     Ternary owns(void[] b)
     {
         debug(KRRegion) assertValid("owns");
@@ -942,3 +942,4 @@ version (StdUnittest)
     assert(alloc.deallocate(k));
     assert(alloc.empty == Ternary.yes);
 }
+