QA output created by 043
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728

== backing file references self ==
qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT

== parent references self ==
qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.1.base backing_fmt=IMGFMT
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.2.base backing_fmt=IMGFMT
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.3.base backing_fmt=IMGFMT

== ancestor references another ancestor ==
qemu-img: Backing file 'TEST_DIR/t.IMGFMT.2.base' creates an infinite loop.
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.1.base backing_fmt=IMGFMT
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.2.base backing_fmt=IMGFMT

== finite chain of length 3 (human) ==
image: TEST_DIR/t.IMGFMT
file format: IMGFMT
virtual size: 128 MiB (134217728 bytes)
cluster_size: 65536
backing file: TEST_DIR/t.IMGFMT.2.base

image: TEST_DIR/t.IMGFMT.2.base
file format: IMGFMT
virtual size: 128 MiB (134217728 bytes)
cluster_size: 65536
backing file: TEST_DIR/t.IMGFMT.1.base

image: TEST_DIR/t.IMGFMT.1.base
file format: IMGFMT
virtual size: 128 MiB (134217728 bytes)
cluster_size: 65536

== finite chain of length 3 (json) ==
[
    {
        "virtual-size": 134217728,
        "filename": "TEST_DIR/t.IMGFMT",
        "cluster-size": 65536,
        "format": "IMGFMT",
        "full-backing-filename": "TEST_DIR/t.IMGFMT.2.base",
        "backing-filename": "TEST_DIR/t.IMGFMT.2.base",
        "dirty-flag": false
    },
    {
        "virtual-size": 134217728,
        "filename": "TEST_DIR/t.IMGFMT.2.base",
        "cluster-size": 65536,
        "format": "IMGFMT",
        "full-backing-filename": "TEST_DIR/t.IMGFMT.1.base",
        "backing-filename": "TEST_DIR/t.IMGFMT.1.base",
        "dirty-flag": false
    },
    {
        "virtual-size": 134217728,
        "filename": "TEST_DIR/t.IMGFMT.1.base",
        "cluster-size": 65536,
        "format": "IMGFMT",
        "dirty-flag": false
    }
]
*** done