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block/vdi: Don't take address of fields in packed structs
Taking the address of a field in a packed struct is a bad idea, because it might not be actually aligned enough for that pointer type (and thus cause a crash on dereference on some host architectures). Newer versions of clang warn about this. Instead of passing UUID related functions the address of a possibly unaligned QemuUUID struct, use local variables and then copy to/from the struct field as appropriate. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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