MERCURY_OPTIONS= --deep-random-write=25 --mdb-disable-progress
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/tests/par_conj'
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/mmc --generate-dependencies --grade asm_fast.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     threads_hang > threads_hang.dep_err 2>&1
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/tests/par_conj'
make[3]: Entering directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/tests/par_conj'
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/mmc --make-interface --grade asm_fast.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     threads_hang
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/mmc --compile-to-c --grade asm_fast.par.gc     --mercury-linkage static --flags ../TESTS_FLAGS --flags ../WS_FLAGS     threads_hang > threads_hang.err 2>&1
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/mgnuc --grade asm_fast.par.gc       --      -c threads_hang.c -o threads_hang.o
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/mgnuc --grade asm_fast.par.gc       --      -c threads_hang_init.c -o threads_hang_init.o
/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/scripts/ml --grade asm_fast.par.gc     --no-mercury-stdlib-dir  --trace-init-file /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/browser/mer_browser.init --trace-init-file /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/mdbcomp/mer_mdbcomp.init --ssdb-init-file /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/ssdb/mer_ssdb.init        --    -o threads_hang threads_hang_init.o \
	threads_hang.o \
	 /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/trace/libmer_trace.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/trace/libmer_eventspec.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/ssdb/libmer_ssdb.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/browser/libmer_browser.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/mdbcomp/libmer_mdbcomp.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/library/libmer_std.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/runtime/libmer_rt.a /mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/stage2/boehm_gc/libpar_gc.a      
for i in 1 2 3 4 5 6 7 8 9 10 ; do \
	MERCURY_OPTIONS=-P10 ./threads_hang 2>&1 > threads_hang.out ||\
		{ echo 'failed' > threads_hang.out; break; } \
done

*** Mercury runtime: caught segmentation violation ***
cause: address not mapped to object
PC at signal: 93850974851684 (555b62049264)
address involved: (nil)
This may have been caused by a stack overflow, due to unbounded recursion.
exiting from signal handler
Segmentation fault (core dumped)
Comparing threads_hang.out with threads_hang.exp*,
	results in threads_hang.res
** threads_hang.out did not match the expected output
** (closest match was threads_hang.res1)
--- threads_hang.exp	2020-10-11 14:28:49.000000000 +1100
+++ threads_hang.out	2023-07-15 11:31:17.894001569 +1000
@@ -1,2 +1 @@
-21
-13
+failed
make[3]: *** [../Mmake.common:138: threads_hang.res] Error 1
make[3]: Target 'threads_hang.runtest' not remade because of errors.
make[3]: Leaving directory '/mnt/testing/run/build/mercury-srcdist-rotd-2023-07-14/tests/par_conj'