MERCURY_OPTIONS= --deep-random-write=25 --deep-std-name --mdb-disable-progress
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/tests/declarative_debugger'
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/mmc --generate-dependencies --grade asm_fast.gc.decldebug.stseg.tr    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS --trace decl     supertree_warning > supertree_warning.dep_err 2>&1
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/tests/declarative_debugger'
gmake[3]: Entering directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/tests/declarative_debugger'
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/mmc --make-interface --grade asm_fast.gc.decldebug.stseg.tr    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS --trace decl     supertree_warning
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/mmc --compile-to-c --grade asm_fast.gc.decldebug.stseg.tr    --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS --trace decl     supertree_warning > supertree_warning.err 2>&1
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/mgnuc --grade asm_fast.gc.decldebug.stseg.tr       --      -c supertree_warning.c -o supertree_warning.o
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/mgnuc --grade asm_fast.gc.decldebug.stseg.tr       --      -c supertree_warning_init.c -o supertree_warning_init.o
/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/ml --grade asm_fast.gc.decldebug.stseg.tr    --no-mercury-stdlib-dir --trace --trace-init-file /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/browser/mer_browser.init --trace-init-file /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/mdbcomp/mer_mdbcomp.init --ssdb-init-file /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/ssdb/mer_ssdb.init        --    \
	-o supertree_warning \
	supertree_warning_init.o supertree_warning.o \
	/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/trace/libmer_trace.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/trace/libmer_eventspec.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/ssdb/libmer_ssdb.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/browser/libmer_browser.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/mdbcomp/libmer_mdbcomp.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/library/libmer_std.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/runtime/libmer_rt.a /home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/boehm_gc/libgc.a      
MERCURY_OPTIONS="$MERCURY_OPTIONS -de" HOME=/nonexistent MERCURY_SUPPRESS_MDB_BANNER=yes MERCURY_DEBUGGER_INIT=/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/stage2/scripts/test_mdbrc mdb ./supertree_warning < supertree_warning.inp > supertree_warning.out 2>&1 \
|| { grep . supertree_warning.out /dev/null; exit 1; }
Comparing supertree_warning.out with supertree_warning.exp*,
	results in supertree_warning.res
** supertree_warning.out did not match the expected output
** (closest match was supertree_warning.res1)
--- supertree_warning.exp	2025-05-12 23:02:35.000000000 +1000
+++ supertree_warning.out	2026-06-22 03:45:38.147369555 +1000
@@ -14,7 +14,7 @@
 mdb> f
       E3:     C2 EXIT pred supertree_warning.q/2-0 (det)
 mdb> dd -d 3 -n 7 -a
-All descendent calls are trusted.
+All descendant calls are trusted.
 Shall I continue searching in ancestor calls?
 > maybe
 Please answer yes or no.
@@ -24,7 +24,7 @@
 Diagnosis aborted.
       E3:     C2 EXIT pred supertree_warning.q/2-0 (det)
 mdb> dd -d 3 -n 7 -a
-All descendent calls are trusted.
+All descendant calls are trusted.
 Shall I continue searching in ancestor calls?
 > n
 Diagnosis aborted.
gmake[3]: *** [../Mmake.common:132: supertree_warning.res] Error 1
gmake[3]: Target 'supertree_warning.runtest' not remade because of errors.
gmake[3]: Leaving directory '/home/mercury/testing/run/build/mercury-srcdist-rotd-2026-06-21/tests/declarative_debugger'
ERROR OUTPUT
supertree_warning.m:017: In predicate `main'/2:
supertree_warning.m:017:   warning: the first argument and the second argument,
supertree_warning.m:017:   represented by the state variable `!IO', could be
supertree_warning.m:017:   deleted, because they are not used, and because the
supertree_warning.m:017:   final value is always the same as the initial value.
END OF THE ERROR OUTPUT