MERCURY_OPTIONS= --deep-random-write=25 --deep-std-name --mdb-disable-progress
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/tests/valid'
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/stage2/scripts/mmc --generate-dependencies --grade hlc.gc    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt -O0 --optimise-tailcalls --warn-non-tail-recursion self   require_tailrec_1 > require_tailrec_1.dep_err 2>&1
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/tests/valid'
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/tests/valid'
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/stage2/scripts/mmc --make-interface --grade hlc.gc    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt -O0 --optimise-tailcalls --warn-non-tail-recursion self   require_tailrec_1
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/stage2/scripts/mmc --make-optimization-interface --grade hlc.gc    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt -O0 --optimise-tailcalls --warn-non-tail-recursion self   require_tailrec_1
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/stage2/scripts/mmc --compile-to-c --grade hlc.gc    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS -O5 --intermod-opt -O0 --optimise-tailcalls --warn-non-tail-recursion self   require_tailrec_1 > require_tailrec_1.err 2>&1
gmake[3]: *** [/tmp/mmake.KhKKfQ:2731: require_tailrec_1.c_date] Error 1
gmake[3]: Target 'require_tailrec_1.runtest' not remade because of errors.
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-09/tests/valid'
ERROR OUTPUT
require_tailrec_1.m:064: Warning in function `even1'/1:
require_tailrec_1.m:064:   this self-recursive call is not tail recursive.
require_tailrec_1.m:068: Error in `:- pragma require_tail_recursion' for
require_tailrec_1.m:068:   function `odd2'/1:
require_tailrec_1.m:068:   the code defining this function contains no
require_tailrec_1.m:068:   recursive calls at all, tail-recursive or otherwise.
require_tailrec_1.m:076: Warning in `:- pragma require_tail_recursion' for
require_tailrec_1.m:076:   function `odd3'/1:
require_tailrec_1.m:076:   the code defining this function contains no
require_tailrec_1.m:076:   recursive calls at all, tail-recursive or otherwise.
require_tailrec_1.m:081: Warning in function `even2'/1:
require_tailrec_1.m:081:   this self-recursive call is not tail recursive.
require_tailrec_1.m:095: Warning in function `even3'/1:
require_tailrec_1.m:095:   this self-recursive call is not tail recursive.
END OF THE ERROR OUTPUT