diff --git a/alloc.d b/alloc.d
index 16f7e81..bf04bb1 100644
--- a/alloc.d
+++ b/alloc.d
@@ -75,6 +75,13 @@ AllocArray(T)(u64 count)
 	return (cast(T*)mem)[0 .. count];
 }
 
+T[]
+ReallocArray(T)(T[] arr, u64 count)
+{
+	void* mem = pureRealloc(arr.ptr, T.sizeof * count);
+	return (cast(T*)mem)[0 .. count];
+}
+
 Arena 
 CreateArena(u64 size)
 {