[Qemu-devel] [PATCH 01/12] block: avoid a write only variable

[Blue Swirl]

Compiling with GCC 4.6.0 20100925 produced a warning:
/src/qemu/block/qcow2-refcount.c: In function 'update_refcount':
/src/qemu/block/qcow2-refcount.c:552:13: error: variable 'dummy' set
but not used [-Werror=unused-but-set-variable]

Fix by adding a dummy cast so that the result is not unused.

Signed-off-by: Blue Swirl <blauwir...@gmail.com>
---
 block/qcow2-refcount.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index 7082601..0efb676 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -551,6 +551,7 @@ fail:
     if (ret < 0) {
         int dummy;
         dummy = update_refcount(bs, offset, cluster_offset - offset, -addend);
+        (void)dummy;
     }

     return ret;
-- 
1.6.2.4