id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12613	Problem in vf2_subgraph_iso handling self-loops when using undirectedS	Flavio De Lorenzi <fdlorenzi@…>	Jeremiah Willcock	"The attached example (with 1 vertex and 1 self-loop) illustrates that `vf2_subgraph_iso` fails to detect the isomorphism when using `underictedS` and e.g. `vecS` as edge list. This is because adding a single self-loop to a vertex (when using `vecS` as edge list) results in 2 out-edges having the same edge descriptor. Is this intended?
(In contrast, using `setS` as edge list to describe the same graph (1 vertex and 1 self-loop) results in only one out-edge. In this case vf2_subgraph_iso finds the isomorphism because each out-edge has a unique edge descriptor). 

This affects also previous versions.

Best wishes,
Flavio"	Bugs	new	To Be Determined	graph	Boost Development Trunk	Problem