Got below error when run "make everything".

restripe.c: In function ‘test_stripes’:
restripe.c:870:4: error: ignoring return value of ‘read’, declared with attribute warn_unused_result [-Werror=unused-result]
    read(source[i], stripes[i], chunk_size);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fix it by check the return value of ‘read’, and free memory
in the failure case.

Signed-off-by: Guoqing Jiang <redacted>
---
 restripe.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/restripe.c b/restripe.c
index 31b07e8..48c6506 100644
--- a/restripe.c
+++ b/restripe.c

@@ -867,7 +867,15 @@ int test_stripes(int *source, unsigned long long *offsets,
 
 		for (i = 0 ; i < raid_disks ; i++) {
 			lseek64(source[i], offsets[i]+start, 0);
-			read(source[i], stripes[i], chunk_size);
+			if (read(source[i], stripes[i], chunk_size) !=
+			    chunk_size) {
+				free(q);
+				free(p);
+				free(blocks);
+				free(stripes);
+				free(stripe_buf);
+				return -1;
+			}
 		}
 		for (i = 0 ; i < data_disks ; i++) {
 			int disk = geo_map(i, start/chunk_size, raid_disks,

-- 
2.17.1