2 files changed, 5 insertions, 2 deletions
diff --git a/harness/cases/18.t b/harness/cases/18.t
index 6bb0377..5587ceb 100644
--- a/harness/cases/18.t
+++ b/harness/cases/18.t
@@ -91,7 +91,8 @@ test_main(void)
 	assert(fd != -1);
 
 	memset(buffer, FILEPATTERN, PAGE_SIZE);
-	write(fd, buffer, PAGE_SIZE);
+	ret = write(fd, buffer, PAGE_SIZE);
+	assert(ret == PAGE_SIZE);
 	close(fd);
 
 	for (i = 0; i < THREADS_NUM; i++) {
diff --git a/harness/cases/8.t b/harness/cases/8.t
index e59199f..dbcf044 100644
--- a/harness/cases/8.t
+++ b/harness/cases/8.t
@@ -9,12 +9,14 @@ long long get_fs_limit(int fd)
 {
 	long long min = 0, max = 9223372036854775807LL;
 	char c = 0;
+	int ret;
 
 	while (max - min > 1) {
 		if (pwrite64(fd, &c, 1, (min + max) / 2) == -1)
 			max = (min + max) / 2;
 		else {
-			ftruncate(fd, 0);
+			ret = ftruncate(fd, 0);
+			assert(ret == 0);
 			min = (min + max) / 2;
 		}
 	}