block/qcow2-cluster: Add missing "fallthrough" annotation
When compiling with -Werror=implicit-fallthrough, the compiler currently complains: ../../devel/qemu/block/qcow2-cluster.c: In function ‘cluster_needs_new_alloc’: ../../devel/qemu/block/qcow2-cluster.c:1320:12: error: this statement may fall through [-Werror=implicit-fallthrough=] if (l2_entry & QCOW_OFLAG_COPIED) { ^ ../../devel/qemu/block/qcow2-cluster.c:1323:5: note: here case QCOW2_CLUSTER_UNALLOCATED: ^~~~ It's quite obvious that the fallthrough is intended here, so let's add a comment to silence the compiler warning. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20200908070028.193298-1-thuth@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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@ -1320,6 +1320,7 @@ static bool cluster_needs_new_alloc(BlockDriverState *bs, uint64_t l2_entry)
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if (l2_entry & QCOW_OFLAG_COPIED) {
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if (l2_entry & QCOW_OFLAG_COPIED) {
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return false;
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return false;
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}
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}
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/* fallthrough */
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case QCOW2_CLUSTER_UNALLOCATED:
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case QCOW2_CLUSTER_UNALLOCATED:
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case QCOW2_CLUSTER_COMPRESSED:
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case QCOW2_CLUSTER_COMPRESSED:
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case QCOW2_CLUSTER_ZERO_PLAIN:
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case QCOW2_CLUSTER_ZERO_PLAIN:
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