X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftdb%2Ftest%2Frun-corrupt.c;h=6f753ea6d46c81c9dbd3f9e388c1f3078c98e30e;hp=2109e936b1bf77eb645ffc7627f50896ed6b436e;hb=b10598ebdad2302c637c14961525c0d9cef937f5;hpb=e8dfb48ec9dd9a7575b179e8208cd2dd5c73bcce;ds=sidebyside

diff --git a/ccan/tdb/test/run-corrupt.c b/ccan/tdb/test/run-corrupt.c
index 2109e936..6f753ea6 100644
--- a/ccan/tdb/test/run-corrupt.c
+++ b/ccan/tdb/test/run-corrupt.c
@@ -43,9 +43,11 @@ static void tdb_flip_bit(struct tdb_context *tdb, unsigned int bit)
 		((unsigned char *)tdb->map_ptr)[off] ^= mask;
 	else {
 		unsigned char c;
-		pread(tdb->fd, &c, 1, off);
+		if (pread(tdb->fd, &c, 1, off) != 1)
+			err(1, "pread");
 		c ^= mask;
-		pwrite(tdb->fd, &c, 1, off);
+		if (pwrite(tdb->fd, &c, 1, off) != 1)
+			err(1, "pwrite");
 	}
 }