id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	revision
619	Segmentation fault when calling findArc	didif	Alpar Juttner	"Found in version: 1.3.1

The call to findArc in the bellow program yields segmentation fault on Ubuntu 16.04:

int main()
{
  ListGraph g;
  ListGraph::Node n = g.addNode();
  ListGraph::Arc a = findArc(g, INVALID, n);
  return 0;
}

I expect to get INVALID back from findArc in this case.
"	defect	closed	major	LEMON 1.4 release	core	hg main	invalid	findArc