Merge pull request #536 from quickfur/issue6646

Fix issue 6646: array.reserve should be callable from SafeD.

src/object.di

@@ -641,7 +641,7 @@ private
     return _d_arraysetcapacity(typeid(T[]), 0, cast(void *)&arr);
 }
 
-size_t reserve(T)(ref T[] arr, size_t newcapacity) pure nothrow
+size_t reserve(T)(ref T[] arr, size_t newcapacity) pure nothrow @trusted
 {
     return _d_arraysetcapacity(typeid(T[]), newcapacity, cast(void *)&arr);
 }

src/object_.d

@@ -2558,7 +2558,7 @@ unittest
  * The return value is the new capacity of the array (which may be larger than
  * the requested capacity).
  */
-size_t reserve(T)(ref T[] arr, size_t newcapacity) pure nothrow
+size_t reserve(T)(ref T[] arr, size_t newcapacity) pure nothrow @trusted
 {
     return _d_arraysetcapacity(typeid(T[]), newcapacity, cast(void *)&arr);
 }
@@ -2583,6 +2583,13 @@ unittest
     assert(u == a.capacity); //a should not have been extended
 }
 
+// Issue 6646: should be possible to use array.reserve from SafeD.
+@safe unittest
+{
+    int[] a;
+    a.reserve(10);
+}
+
 /**
  * Assume that it is safe to append to this array. Appends made to this array
  * after calling this function may append in place, even if the array was a