diff --git a/t/perf/p0100-globbing.sh b/t/perf/p0100-globbing.sh
index dd18a9ce2b..439e9c8e3c 100755
--- a/t/perf/p0100-globbing.sh
+++ b/t/perf/p0100-globbing.sh
@@ -19,9 +19,9 @@ test_expect_success 'setup' '
 		printf "a" >>refname &&
 		for j in $(test_seq 1 $i)
 		do
-			printf "a*" >>refglob.$i
+			printf "a*" >>refglob.$i || return 1
 		done &&
-		echo b >>refglob.$i
+		echo b >>refglob.$i || return 1
 	done &&
 	test_commit test $(cat refname).t "" $(cat refname).t
 '
diff --git a/t/perf/p1400-update-ref.sh b/t/perf/p1400-update-ref.sh
index dda8a74866..a75969cbb1 100755
--- a/t/perf/p1400-update-ref.sh
+++ b/t/perf/p1400-update-ref.sh
@@ -13,7 +13,7 @@ test_expect_success "setup" '
 	do
 		printf "start\ncreate refs/heads/%d PRE\ncommit\n" $i &&
 		printf "start\nupdate refs/heads/%d POST PRE\ncommit\n" $i &&
-		printf "start\ndelete refs/heads/%d POST\ncommit\n" $i
+		printf "start\ndelete refs/heads/%d POST\ncommit\n" $i || return 1
 	done >instructions
 '
 
@@ -22,7 +22,7 @@ test_perf "update-ref" '
 	do
 		git update-ref refs/heads/branch PRE &&
 		git update-ref refs/heads/branch POST PRE &&
-		git update-ref -d refs/heads/branch
+		git update-ref -d refs/heads/branch || return 1
 	done
 '
 
diff --git a/t/perf/p1451-fsck-skip-list.sh b/t/perf/p1451-fsck-skip-list.sh
index c2b97d2487..f767d834f2 100755
--- a/t/perf/p1451-fsck-skip-list.sh
+++ b/t/perf/p1451-fsck-skip-list.sh
@@ -15,7 +15,7 @@ test_expect_success "setup $n bad commits" '
 		echo "committer C <c@example.com> 1234567890 +0000" &&
 		echo "data <<EOF" &&
 		echo "$i.Q." &&
-		echo "EOF"
+		echo "EOF" || return 1
 	done | q_to_nul | git fast-import
 '
 
diff --git a/t/perf/p3400-rebase.sh b/t/perf/p3400-rebase.sh
index 43d5a34e8c..e6b0277729 100755
--- a/t/perf/p3400-rebase.sh
+++ b/t/perf/p3400-rebase.sh
@@ -22,7 +22,7 @@ test_expect_success 'setup rebasing on top of a lot of changes' '
 		git add unrelated-file$i &&
 		test_tick &&
 		git commit -m commit$i-reverse unrelated-file$i ||
-		break
+		return 1
 	done &&
 	git checkout to-rebase &&
 	test_commit our-patch interesting-file
diff --git a/t/perf/p5302-pack-index.sh b/t/perf/p5302-pack-index.sh
index 654cd9c86e..c16f6a3ff6 100755
--- a/t/perf/p5302-pack-index.sh
+++ b/t/perf/p5302-pack-index.sh
@@ -22,7 +22,7 @@ test_expect_success 'set up thread-counting tests' '
 	while test $t -gt 0
 	do
 		threads="$t $threads" &&
-		t=$((t / 2))
+		t=$((t / 2)) || return 1
 	done
 '
 
diff --git a/t/perf/p5303-many-packs.sh b/t/perf/p5303-many-packs.sh
index 58213fe171..af173a7b73 100755
--- a/t/perf/p5303-many-packs.sh
+++ b/t/perf/p5303-many-packs.sh
@@ -130,7 +130,7 @@ test_expect_success 'generate lots of packs' '
 		echo "data <<EOF" &&
 		echo "blob $i" &&
 		echo "EOF" &&
-		echo "checkpoint"
+		echo "checkpoint" || return 1
 	done |
 	git -c fastimport.unpackLimit=0 fast-import
 '
diff --git a/t/perf/p7519-fsmonitor.sh b/t/perf/p7519-fsmonitor.sh
index 5eb5044a10..c8be58f3c7 100755
--- a/t/perf/p7519-fsmonitor.sh
+++ b/t/perf/p7519-fsmonitor.sh
@@ -119,10 +119,10 @@ test_expect_success "one time repo setup" '
 	fi &&
 
 	mkdir 1_file 10_files 100_files 1000_files 10000_files &&
-	for i in $(test_seq 1 10); do touch 10_files/$i; done &&
-	for i in $(test_seq 1 100); do touch 100_files/$i; done &&
-	for i in $(test_seq 1 1000); do touch 1000_files/$i; done &&
-	for i in $(test_seq 1 10000); do touch 10000_files/$i; done &&
+	for i in $(test_seq 1 10); do touch 10_files/$i || return 1; done &&
+	for i in $(test_seq 1 100); do touch 100_files/$i || return 1; done &&
+	for i in $(test_seq 1 1000); do touch 1000_files/$i || return 1; done &&
+	for i in $(test_seq 1 10000); do touch 10000_files/$i || return 1; done &&
 	git add 1_file 10_files 100_files 1000_files 10000_files &&
 	git commit -qm "Add files" &&
 
diff --git a/t/t0008-ignores.sh b/t/t0008-ignores.sh
index 42d2314804..5575dade8e 100755
--- a/t/t0008-ignores.sh
+++ b/t/t0008-ignores.sh
@@ -200,7 +200,7 @@ test_expect_success 'setup' '
 	do
 		: >$dir/not-ignored &&
 		: >$dir/ignored-and-untracked &&
-		: >$dir/ignored-but-in-index
+		: >$dir/ignored-but-in-index || return 1
 	done &&
 	git add -f ignored-but-in-index a/ignored-but-in-index &&
 	cat <<-\EOF >a/.gitignore &&
diff --git a/t/t0011-hashmap.sh b/t/t0011-hashmap.sh
index e094975b13..1cb6aa6824 100755
--- a/t/t0011-hashmap.sh
+++ b/t/t0011-hashmap.sh
@@ -220,7 +220,7 @@ test_expect_success 'grow / shrink' '
 	for n in $(test_seq 51)
 	do
 		echo put key$n value$n >> in &&
-		echo NULL >> expect
+		echo NULL >> expect || return 1
 	done &&
 	echo size >> in &&
 	echo 64 51 >> expect &&
@@ -231,7 +231,7 @@ test_expect_success 'grow / shrink' '
 	for n in $(test_seq 12)
 	do
 		echo remove key$n >> in &&
-		echo value$n >> expect
+		echo value$n >> expect || return 1
 	done &&
 	echo size >> in &&
 	echo 256 40 >> expect &&
diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index bb3de2701a..bad37abad2 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -285,7 +285,7 @@ test_expect_success 'required filter with absent smudge field' '
 test_expect_success 'filtering large input to small output should use little memory' '
 	test_config filter.devnull.clean "cat >/dev/null" &&
 	test_config filter.devnull.required true &&
-	for i in $(test_seq 1 30); do printf "%1048576d" 1; done >30MB &&
+	for i in $(test_seq 1 30); do printf "%1048576d" 1 || return 1; done >30MB &&
 	echo "30MB filter=devnull" >.gitattributes &&
 	GIT_MMAP_LIMIT=1m GIT_ALLOC_LIMIT=1m git add 30MB
 '
@@ -303,7 +303,7 @@ test_expect_success 'filter that does not read is fine' '
 test_expect_success EXPENSIVE 'filter large file' '
 	test_config filter.largefile.smudge cat &&
 	test_config filter.largefile.clean cat &&
-	for i in $(test_seq 1 2048); do printf "%1048576d" 1; done >2GB &&
+	for i in $(test_seq 1 2048); do printf "%1048576d" 1 || return 1; done >2GB &&
 	echo "2GB filter=largefile" >.gitattributes &&
 	git add 2GB 2>err &&
 	test_must_be_empty err &&
@@ -643,7 +643,7 @@ test_expect_success PERL 'required process filter should process multiple packet
 		for FILE in "$TEST_ROOT"/*.file
 		do
 			cp "$FILE" . &&
-			rot13.sh <"$FILE" >"$FILE.rot13"
+			rot13.sh <"$FILE" >"$FILE.rot13" || return 1
 		done &&
 
 		echo "*.file filter=protocol" >.gitattributes &&
@@ -682,7 +682,7 @@ test_expect_success PERL 'required process filter should process multiple packet
 
 		for FILE in *.file
 		do
-			test_cmp_committed_rot13 "$TEST_ROOT/$FILE" $FILE
+			test_cmp_committed_rot13 "$TEST_ROOT/$FILE" $FILE || return 1
 		done
 	)
 '
diff --git a/t/t0095-bloom.sh b/t/t0095-bloom.sh
index 7e4ab1795f..5945973552 100755
--- a/t/t0095-bloom.sh
+++ b/t/t0095-bloom.sh
@@ -84,7 +84,7 @@ test_expect_success 'get bloom filter for commit with 10 changes' '
 	mkdir smallDir &&
 	for i in $(test_seq 0 9)
 	do
-		echo $i >smallDir/$i
+		echo $i >smallDir/$i || return 1
 	done &&
 	git add smallDir &&
 	git commit -m "commit with 10 changes" &&
@@ -102,7 +102,7 @@ test_expect_success EXPENSIVE 'get bloom filter for commit with 513 changes' '
 	mkdir bigDir &&
 	for i in $(test_seq 0 511)
 	do
-		echo $i >bigDir/$i
+		echo $i >bigDir/$i || return 1
 	done &&
 	git add bigDir &&
 	git commit -m "commit with 513 changes" &&
diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh
index c76485b1b6..f17abd298c 100755
--- a/t/t0410-partial-clone.sh
+++ b/t/t0410-partial-clone.sh
@@ -469,7 +469,7 @@ test_expect_success 'rev-list dies for missing objects on cmd line' '
 		git -C repo rev-list --ignore-missing --objects \
 			--exclude-promisor-objects "$OBJ" &&
 		git -C repo rev-list --ignore-missing --objects-edge-aggressive \
-			--exclude-promisor-objects "$OBJ"
+			--exclude-promisor-objects "$OBJ" || return 1
 	done
 '
 
diff --git a/t/t1050-large.sh b/t/t1050-large.sh
index 0e4267c723..4f3aa17c99 100755
--- a/t/t1050-large.sh
+++ b/t/t1050-large.sh
@@ -105,7 +105,7 @@ test_expect_success 'packsize limit' '
 		count=0 &&
 		for pi in .git/objects/pack/pack-*.idx
 		do
-			test_path_is_file "$pi" && count=$(( $count + 1 ))
+			test_path_is_file "$pi" && count=$(( $count + 1 )) || return 1
 		done &&
 		test $count = 2 &&
 
@@ -118,7 +118,7 @@ test_expect_success 'packsize limit' '
 
 		for pi in .git/objects/pack/pack-*.idx
 		do
-			git show-index <"$pi"
+			git show-index <"$pi" || return 1
 		done |
 		sed -e "s/^[0-9]* \([0-9a-f]*\) .*/\1/" |
 		sort >actual &&
diff --git a/t/t1091-sparse-checkout-builtin.sh b/t/t1091-sparse-checkout-builtin.sh
index 272ba1b566..5d53dbfbde 100755
--- a/t/t1091-sparse-checkout-builtin.sh
+++ b/t/t1091-sparse-checkout-builtin.sh
@@ -586,7 +586,7 @@ test_expect_success 'pattern-checks: contained glob characters' '
 		!/*/
 		something$c-else/
 		EOF
-		check_read_tree_errors repo "a" "disabling cone pattern matching"
+		check_read_tree_errors repo "a" "disabling cone pattern matching" || return 1
 	done
 '
 
diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 516dd8bfa8..50ee5dc828 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -718,7 +718,7 @@ test_expect_success bool '
 	for i in 1 2 3 4
 	do
 	    git config --bool --get bool.true$i >>result &&
-	    git config --bool --get bool.false$i >>result
+	    git config --bool --get bool.false$i >>result || return 1
 	done &&
 	test_cmp expect result'
 
diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 0d4f73acaa..bd58c6c897 100755
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -1368,7 +1368,7 @@ test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction creating branches
 (
 	for i in $(test_seq 33)
 	do
-		echo "create refs/heads/$i HEAD"
+		echo "create refs/heads/$i HEAD" || exit 1
 	done >large_input &&
 	run_with_limited_open_files git update-ref --stdin <large_input &&
 	git rev-parse --verify -q refs/heads/33
@@ -1379,7 +1379,7 @@ test_expect_success ULIMIT_FILE_DESCRIPTORS 'large transaction deleting branches
 (
 	for i in $(test_seq 33)
 	do
-		echo "delete refs/heads/$i HEAD"
+		echo "delete refs/heads/$i HEAD" || exit 1
 	done >large_input &&
 	run_with_limited_open_files git update-ref --stdin <large_input &&
 	test_must_fail git rev-parse --verify -q refs/heads/33
diff --git a/t/t1403-show-ref.sh b/t/t1403-show-ref.sh
index bbc01aae34..405da58b75 100755
--- a/t/t1403-show-ref.sh
+++ b/t/t1403-show-ref.sh
@@ -123,14 +123,14 @@ test_expect_success 'show-ref -d' '
 test_expect_success 'show-ref --heads, --tags, --head, pattern' '
 	for branch in B main side
 	do
-		echo $(git rev-parse refs/heads/$branch) refs/heads/$branch
+		echo $(git rev-parse refs/heads/$branch) refs/heads/$branch || return 1
 	done >expect.heads &&
 	git show-ref --heads >actual &&
 	test_cmp expect.heads actual &&
 
 	for tag in A B C
 	do
-		echo $(git rev-parse refs/tags/$tag) refs/tags/$tag
+		echo $(git rev-parse refs/tags/$tag) refs/tags/$tag || return 1
 	done >expect.tags &&
 	git show-ref --tags >actual &&
 	test_cmp expect.tags actual &&
diff --git a/t/t1410-reflog.sh b/t/t1410-reflog.sh
index d42f067ff8..d7ddf7612d 100755
--- a/t/t1410-reflog.sh
+++ b/t/t1410-reflog.sh
@@ -349,12 +349,12 @@ test_expect_success SHA1 'parsing reverse reflogs at BUFSIZ boundaries' '
 		printf "$zf%02d $zf%02d %s\t" $i $(($i+1)) "$ident" &&
 		if test $i = 75; then
 			for j in $(test_seq 1 89); do
-				printf X
+				printf X || return 1
 			done
 		else
 			printf X
 		fi &&
-		printf "\n"
+		printf "\n" || return 1
 	done >.git/logs/refs/heads/reflogskip &&
 	git rev-parse reflogskip@{73} >actual &&
 	echo ${zf}03 >expect &&
diff --git a/t/t1512-rev-parse-disambiguation.sh b/t/t1512-rev-parse-disambiguation.sh
index 15188a408b..b0119bf8bc 100755
--- a/t/t1512-rev-parse-disambiguation.sh
+++ b/t/t1512-rev-parse-disambiguation.sh
@@ -381,7 +381,7 @@ test_expect_success 'ambiguous commits are printed by type first, then hash orde
 	do
 		grep $type objects >$type.objects &&
 		sort $type.objects >$type.objects.sorted &&
-		test_cmp $type.objects.sorted $type.objects
+		test_cmp $type.objects.sorted $type.objects || return 1
 	done
 '
 
diff --git a/t/t2004-checkout-cache-temp.sh b/t/t2004-checkout-cache-temp.sh
index 9bb503a975..b16d69ca4a 100755
--- a/t/t2004-checkout-cache-temp.sh
+++ b/t/t2004-checkout-cache-temp.sh
@@ -57,7 +57,7 @@ test_expect_success 'checkout all stage 0 to temporary files' '
 		test $(grep $f actual | cut "-d	" -f2) = $f &&
 		p=$(grep $f actual | cut "-d	" -f1) &&
 		test -f $p &&
-		test $(cat $p) = tree1$f
+		test $(cat $p) = tree1$f || return 1
 	done
 '
 
@@ -85,7 +85,7 @@ test_expect_success 'checkout all stage 2 to temporary files' '
 		test $(grep $f actual | cut "-d	" -f2) = $f &&
 		p=$(grep $f actual | cut "-d	" -f1) &&
 		test -f $p &&
-		test $(cat $p) = tree2$f
+		test $(cat $p) = tree2$f || return 1
 	done
 '
 
diff --git a/t/t2012-checkout-last.sh b/t/t2012-checkout-last.sh
index 0e7d47ab31..42601d5a31 100755
--- a/t/t2012-checkout-last.sh
+++ b/t/t2012-checkout-last.sh
@@ -49,14 +49,14 @@ test_expect_success '"checkout -" detaches again' '
 test_expect_success 'more switches' '
 	for i in 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 	do
-		git checkout -b branch$i
+		git checkout -b branch$i || return 1
 	done
 '
 
 more_switches () {
 	for i in 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
 	do
-		git checkout branch$i
+		git checkout branch$i || return 1
 	done
 }
 
diff --git a/t/t2200-add-update.sh b/t/t2200-add-update.sh
index d2ef0041f9..6993fcbe7a 100755
--- a/t/t2200-add-update.sh
+++ b/t/t2200-add-update.sh
@@ -152,7 +152,7 @@ test_expect_success 'add -u resolves unmerged paths' '
 		do
 			echo "100644 $one 1	$path" &&
 			echo "100644 $two 2	$path" &&
-			echo "100644 $three 3	$path"
+			echo "100644 $three 3	$path" || return 1
 		done &&
 		echo "100644 $one 1	path3" &&
 		echo "100644 $one 1	path4" &&
diff --git a/t/t2203-add-intent.sh b/t/t2203-add-intent.sh
index cf0175ad6e..db7ca55998 100755
--- a/t/t2203-add-intent.sh
+++ b/t/t2203-add-intent.sh
@@ -116,7 +116,7 @@ test_expect_success 'cache-tree does not ignore dir that has i-t-a entries' '
 		mkdir 2 &&
 		for f in 1 2/1 2/2 3
 		do
-			echo "$f" >"$f"
+			echo "$f" >"$f" || return 1
 		done &&
 		git add 1 2/2 3 &&
 		git add -N 2/1 &&
diff --git a/t/t3202-show-branch.sh b/t/t3202-show-branch.sh
index ad9902a06b..1e54a33103 100755
--- a/t/t3202-show-branch.sh
+++ b/t/t3202-show-branch.sh
@@ -9,7 +9,7 @@ test_expect_success 'setup' '
 	for i in $(test_seq 1 10)
 	do
 		git checkout -b branch$i initial &&
-		test_commit --no-tag branch$i
+		test_commit --no-tag branch$i || return 1
 	done &&
 	git for-each-ref \
 		--sort=version:refname \
@@ -49,7 +49,7 @@ test_expect_success 'show-branch with more than 8 branches' '
 test_expect_success 'show-branch with showbranch.default' '
 	for branch in $(cat branches.sorted)
 	do
-		test_config showbranch.default $branch --add
+		test_config showbranch.default $branch --add || return 1
 	done &&
 	git show-branch >actual &&
 	test_cmp expect actual
@@ -124,7 +124,7 @@ test_expect_success 'show branch --merge-base with one argument' '
 	do
 		git rev-parse $branch >expect &&
 		git show-branch --merge-base $branch >actual &&
-		test_cmp expect actual
+		test_cmp expect actual || return 1
 	done
 '
 
@@ -133,7 +133,7 @@ test_expect_success 'show branch --merge-base with two arguments' '
 	do
 		git rev-parse initial >expect &&
 		git show-branch --merge-base initial $branch >actual &&
-		test_cmp expect actual
+		test_cmp expect actual || return 1
 	done
 '
 
diff --git a/t/t3303-notes-subtrees.sh b/t/t3303-notes-subtrees.sh
index d47ce00f69..7ce056e617 100755
--- a/t/t3303-notes-subtrees.sh
+++ b/t/t3303-notes-subtrees.sh
@@ -30,7 +30,7 @@ verify_notes () {
 	while [ $i -gt 0 ]; do
 		echo "    commit #$i" &&
 		echo "    note for commit #$i" &&
-		i=$(($i-1));
+		i=$(($i-1)) || return 1
 	done > expect &&
 	test_cmp expect output
 }
@@ -42,7 +42,7 @@ test_expect_success "setup: create $number_of_commits commits" '
 		while [ $nr -lt $number_of_commits ]; do
 			nr=$(($nr+1)) &&
 			test_tick &&
-			cat <<INPUT_END
+			cat <<INPUT_END || return 1
 commit refs/heads/main
 committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
 data <<COMMIT
@@ -178,7 +178,7 @@ verify_concatenated_notes () {
 		echo "    first note for commit #$i" &&
 		echo "    " &&
 		echo "    second note for commit #$i" &&
-		i=$(($i-1));
+		i=$(($i-1)) || return 1
 	done > expect &&
 	test_cmp expect output
 }
diff --git a/t/t3305-notes-fanout.sh b/t/t3305-notes-fanout.sh
index 94c1b02251..836b6f22bf 100755
--- a/t/t3305-notes-fanout.sh
+++ b/t/t3305-notes-fanout.sh
@@ -57,7 +57,7 @@ test_expect_success 'many notes created correctly with git-notes' '
 	do
 		echo "    commit #$i" &&
 		echo "    note #$i" &&
-		i=$(($i - 1));
+		i=$(($i - 1)) || return 1
 	done > expect &&
 	test_cmp expect output
 '
@@ -106,7 +106,7 @@ test_expect_success 'most notes deleted correctly with git-notes' '
 	do
 		echo "    commit #$i" &&
 		echo "    note #$i" &&
-		i=$(($i - 1));
+		i=$(($i - 1)) || return 1
 	done > expect &&
 	test_cmp expect output
 '
diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index 12eb226957..f6a9890d66 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -826,7 +826,7 @@ test_expect_success 'always cherry-pick with --no-ff' '
 	do
 		test ! $(git rev-parse HEAD~$p) = $(git rev-parse original-no-ff-branch~$p) &&
 		git diff HEAD~$p original-no-ff-branch~$p > out &&
-		test_must_be_empty out
+		test_must_be_empty out || return 1
 	done &&
 	test_cmp_rev HEAD~3 original-no-ff-branch~3 &&
 	git diff HEAD~3 original-no-ff-branch~3 > out &&
@@ -1341,7 +1341,7 @@ test_expect_success 'rebase --continue removes CHERRY_PICK_HEAD' '
 		test_seq 5 | sed "s/$double/&&/" >seq &&
 		git add seq &&
 		test_tick &&
-		git commit -m seq-$double
+		git commit -m seq-$double || return 1
 	done &&
 	git tag seq-onto &&
 	git reset --hard HEAD~2 &&
diff --git a/t/t3501-revert-cherry-pick.sh b/t/t3501-revert-cherry-pick.sh
index 4b5b607673..8617efaaf1 100755
--- a/t/t3501-revert-cherry-pick.sh
+++ b/t/t3501-revert-cherry-pick.sh
@@ -19,7 +19,7 @@ test_expect_success setup '
 
 	for l in a b c d e f g h i j k l m n o
 	do
-		echo $l$l$l$l$l$l$l$l$l
+		echo $l$l$l$l$l$l$l$l$l || return 1
 	done >oops &&
 
 	test_tick &&
diff --git a/t/t3508-cherry-pick-many-commits.sh b/t/t3508-cherry-pick-many-commits.sh
index e8375d1c97..2d53ce754c 100755
--- a/t/t3508-cherry-pick-many-commits.sh
+++ b/t/t3508-cherry-pick-many-commits.sh
@@ -29,7 +29,7 @@ test_expect_success setup '
 		git add file1 &&
 		test_tick &&
 		git commit -m "$val" &&
-		git tag $val
+		git tag $val || return 1
 	done
 '
 
diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 6902807ff8..b1f90ba325 100755
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -143,7 +143,7 @@ test_expect_success 'git add with filemode=0, symlinks=0, and unmerged entries'
 	do
 		echo $s > stage$s &&
 		echo "100755 $(git hash-object -w stage$s) $s	file" &&
-		echo "120000 $(printf $s | git hash-object -w -t blob --stdin) $s	symlink"
+		echo "120000 $(printf $s | git hash-object -w -t blob --stdin) $s	symlink" || return 1
 	done | git update-index --index-info &&
 	git config core.filemode 0 &&
 	git config core.symlinks 0 &&
diff --git a/t/t3920-crlf-messages.sh b/t/t3920-crlf-messages.sh
index a8ad5462d9..0276edbe3d 100755
--- a/t/t3920-crlf-messages.sh
+++ b/t/t3920-crlf-messages.sh
@@ -70,7 +70,7 @@ test_crlf_subject_body_and_contents() {
 			for ref in ${LIB_CRLF_BRANCHES}
 			do
 				cat .crlf-${file}-\"\${ref}\".txt >>expect &&
-				printf \"\n\" >>expect
+				printf \"\n\" >>expect || return 1
 			done &&
 			git $command_and_args --format=\"%${atom}\" >actual &&
 			test_cmp expect actual
@@ -90,7 +90,7 @@ test_expect_success 'branch: --verbose works with messages using CRLF' '
 	do
 		printf "  " >>expect &&
 		cat .crlf-subject-${branch}.txt >>expect &&
-		printf "\n" >>expect
+		printf "\n" >>expect || return 1
 	done &&
 	git branch -v >tmp &&
 	# Remove first two columns, and the line for the currently checked out branch