diff -r ab6da8cf5ab2 -r d5c39e9d1a4e tools/dimacs-solver.cc
--- a/tools/dimacs-solver.cc	Mon Apr 06 18:51:04 2009 +0100
+++ b/tools/dimacs-solver.cc	Tue Apr 07 12:56:50 2009 +0100
@@ -115,7 +115,7 @@
 void solve(ArgParser &ap, std::istream &is, std::ostream &os,
            DimacsDescriptor &desc)
 {
-  std::stringstream iss(ap["infcap"]);
+  std::stringstream iss(static_cast<std::string>(ap["infcap"]));
   Value infty;
   iss >> infty;
   if(iss.fail())