Fix terrible std.typecons.scoped bug

For misaligned buffer it emplaces object to incorrect memory location.
dlang · Oct 27, 2012 · 9cf123a · 9cf123a
1 parent dab3b2a
commit 9cf123a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/std/typecons.d b/std/typecons.d
@@ -3109,7 +3109,8 @@ unittest
     }
 
     Scoped!T result;
-    emplace!(Unqual!T)(cast(void[])result.Scoped_store, args);
+    immutable size_t d = cast(void*) result.Scoped_payload - result.Scoped_store.ptr;
+    emplace!(Unqual!T)(result.Scoped_store[d .. $], args);
     return result;
 }