[Qemu-devel] [PATCH] block: Use GCC_FMT_ATTR and fix a format error

[Stefan Weil]

Adding the gcc format attribute detects a format bug
which is fixed here.

Cc: Blue Swirl <address@hidden>
Cc: Kevin Wolf <address@hidden>
Signed-off-by: Stefan Weil <address@hidden>
---
 block/blkverify.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/block/blkverify.c b/block/blkverify.c
index 8083464..b39fb67 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -53,7 +53,8 @@ static AIOPool blkverify_aio_pool = {
     .cancel             = blkverify_aio_cancel,
 };
 
-static void blkverify_err(BlkverifyAIOCB *acb, const char *fmt, ...)
+static void GCC_FMT_ATTR(2, 3) blkverify_err(BlkverifyAIOCB *acb,
+                                             const char *fmt, ...)
 {
     va_list ap;
 
@@ -300,7 +301,7 @@ static void blkverify_verify_readv(BlkverifyAIOCB *acb)
     ssize_t offset = blkverify_iovec_compare(acb->qiov, &acb->raw_qiov);
     if (offset != -1) {
         blkverify_err(acb, "contents mismatch in sector %ld",
-                      acb->sector_num + (offset / BDRV_SECTOR_SIZE));
+                      (long)(acb->sector_num + (offset / BDRV_SECTOR_SIZE)));
     }
 }
 
-- 
1.7.1