Index: tests/array-collections/array-basic.cfa
===================================================================
--- tests/array-collections/array-basic.cfa	(revision 81e768d1c7e5b625cf5e14ca13ea80c649602ad5)
+++ tests/array-collections/array-basic.cfa	(revision e0330d2cd1a09857e7eda48e70140f0f25161679)
@@ -12,7 +12,7 @@
     // numeric subscripts
     ptrdiff_t ix = 1, iy = 2, iz = 3;
-    array( float, Ny, Nz ) & yz = xyz[ix];
-    array( float, Nz ) & z = xyz[ix][iy];
-    float & val = xyz[ix][iy][iz];
+    array( float, Ny, Nz ) & yz = xyz[ix];      (void) yz;
+    array( float, Nz ) & z = xyz[ix][iy];       (void) z;
+    float & val = xyz[ix][iy][iz];              (void) val;
 
     // deferral subscript