Fix warning

diff --git a/cmd/tools/gv2gml.c b/cmd/tools/gv2gml.c
index d08e2d4c70acb3abf0bad04b78a3254e224a0bcf..2ada23f4427f4434ffe73dd22434552ccbe54704 100644 (file)
--- a/cmd/tools/gv2gml.c
+++ b/cmd/tools/gv2gml.c
@@ -613,7 +613,7 @@ emitEdgeAttrs (Agraph_t* G, Agedge_t* ep, FILE* outFile, int ix)
 static void 
 emitEdge (Agraph_t* G, Agedge_t* e, FILE* outFile)
 {
-    fprintf (outFile, "  edge [\n    id %lu\n", AGSEQ(e));
+    fprintf (outFile, "  edge [\n    id %lu\n", (unsigned long)AGSEQ(e));
     fprintf (outFile, "    source %lu\n", ID(agtail(e)));
     fprintf (outFile, "    target %lu\n", ID(aghead(e)));
     emitEdgeAttrs (G, e, outFile, 2);