commit 83e3f76c2565a06877dc415ac9f5cf6f1c75614c
author Blue Swirl <blauwirbel@gmail.com> Wed Oct 13 18:38:07 2010 +0000
committer Blue Swirl <blauwirbel@gmail.com> Wed Oct 13 18:38:07 2010 +0000
tree 260358c66cbe2b017928cd6e84d9a7864f9b5669
parent a2d3f69530b5b16947a8af0f184b3988eb64cadd

block: avoid a write only variable

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.

Acked-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

block/qcow2-refcount.c

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 @@
     if (ret < 0) {
         int dummy;
         dummy = update_refcount(bs, offset, cluster_offset - offset, -addend);
+        (void)dummy;
     }
 
     return ret;