Comment 2 for bug 1462944

This slightly modified example takes about 7 seconds and 2 GB of heap:

$ /usr/bin/time ~/d/qemu/qemu-img info /mnt/scratch/afl13.img
block-vpc: The header checksum of '/mnt/scratch/afl13.img' is incorrect.
qemu-img: Could not open '/mnt/scratch/afl13.img': block-vpc: free_data_block_offset points after the end of file. The image has been truncated.
1.84user 5.72system 0:07.59elapsed 99%CPU (0avgtext+0avgdata 2045496maxresident)k
8inputs+0outputs (0major+507536minor)pagefaults 0swaps