test/xmod/collide_test.ww replaces 989_fnptrcollide_run.c and 989_barefn_collide_run.c with every assertion preserved (build-reject both stages; run-exit 9 + exactly-one TEXT main.run/aa.run + cs==ww). Makefile grows the XMOD_WW_TESTS block mirroring SEP_WW_TESTS, wired into test-compiler.