+#if 0
+/* Enable this code only for testing! Theoretically everything
+ should still work, but very inefficient hash tables will result,
+ meaning that the code will be slow. */
+#warning "HASHING FUNCTIONS ARE DISABLED! EXPECT LOTS OF HASH COLLISIONS!!!"
+
+#include "libpspp/compiler.h"
+
+
+unsigned int
+hash_bytes (const void *b UNUSED, size_t s UNUSED, unsigned int basis UNUSED)
+{
+ return 0;
+}
+
+unsigned int
+hash_string (const char *s UNUSED, unsigned int basis UNUSED)
+{
+ return 0;
+}
+
+unsigned int
+hash_int (int i UNUSED, unsigned int basis UNUSED)
+{
+ return 0;
+}
+
+unsigned int
+hash_double (double d UNUSED, unsigned int basis UNUSED)
+{
+ return 0;
+}
+
+unsigned int
+hash_pointer (const void *p UNUSED, unsigned int basis UNUSED)
+{
+ return 0;
+}
+
+#else
+