I tried to install GRUB2 to a partition and found a bug in pc_partition_map:
in pc_partition_map_iterate pcdata was a local variable and its address was
written to p and p was returned.

2005-08-08 Vladimir Serbinenko <phcoder@gmail.com>
   
    * partmap/pc.c (pc_partition_map_iterate): pcdata is now dynamically
allocated
    * util/i386/pc/grub-setup.c (main): initialize prefix and dest_dev
to NULL
      prefix was freed twice