I already did this in abebf1586c06, but I edited the wrong file. Then in edddc6b7cd17, I deleted that file. By fixing fit16i(), I can now compile ACK for OpenBSD/amd64.
@@ -353,7 +353,7 @@ C_magic()
}
/*** the compact code generating routines ***/
-#define fit16i(x) ((x) >= (long)0xFFFF8000 && (x) <= (long)0x00007FFF)
+#define fit16i(x) ((x) >= (long)(-0x8000) && (x) <= (long)0x7FFF)
#define fit8u(x) ((x) <= 0xFF) /* x is already unsigned */
void