Index: tests/array-collections/array-sbscr-types.cfa
===================================================================
--- tests/array-collections/array-sbscr-types.cfa	(revision fee4436eba1b28227b579391350244cc53817461)
+++ tests/array-collections/array-sbscr-types.cfa	(revision 82ff201a99a11a82cf9433b9c5bc03929b6ba0b8)
@@ -28,4 +28,5 @@
 // generally using ptrdiff_t-typed variables to convey numeric values.
 
+#include <assert.h>
 
 #define show( expr ) printf( "%.1f\n", expr )