Title: abort when using rank=same
Submitter: Tuomo Takkula
Date: Thu Jun 5 09:59:40 2008
System: x86-Linux-2.6.18 Debian
dot aborts on the file below. It does not if the "rank = same" instructions
are not present.
Input file: b1372.dot
[erg] dot aborts in shortest.c, line 310. The problem is
with flat edges.
Removing the first node of the first subgraph and rank=same from
the second removes the error. If one removes the first node from
the first subgraph, and all but the last 2 from the second, the
abort then reverts to our old friend init_rank.