mingle: use safer C++ casts

diff --git a/cmd/mingle/minglemain.cpp b/cmd/mingle/minglemain.cpp
index 9386dc3aa1be82652e7a239e935db1bfb20e9669..2032dc543d793085d6561549e100fa67acc9dff6 100644 (file)
--- a/cmd/mingle/minglemain.cpp
+++ b/cmd/mingle/minglemain.cpp
@@ -193,7 +193,7 @@ static void init(int argc, char *argv[], opts_t* opts)
                case 'v':
                        Verbose = 1;
                        if ((sscanf(optarg,"%d",&i) > 0) && (i >= 0))
-                               Verbose =  (unsigned char)i;
+                               Verbose = static_cast<unsigned char>(i);
                        else
                                optind--;
                        break;
@@ -328,8 +328,8 @@ static void genBundleColors(pedge edge, std::ostream &os, double maxwgt) {
 static void
 export_dot (FILE* fp, int ne, pedge *edges, Agraph_t* g)
 {
-       Agsym_t* epos = agattr(g, AGEDGE, (char*)"pos", "");
-       Agsym_t* esects = agattr(g, AGEDGE, (char*)"bundle", "");
+       Agsym_t* epos = agattr(g, AGEDGE, const_cast<char*>("pos"), "");
+       Agsym_t* esects = agattr(g, AGEDGE, const_cast<char*>("bundle"), "");
        Agsym_t* eclrs = nullptr;
        Agnode_t* n;
        Agedge_t* e;
@@ -361,7 +361,7 @@ export_dot (FILE* fp, int ne, pedge *edges, Agraph_t* g)
                        buf.str("");
 
                        if (edge->wgts) {
-                               if (!eclrs) eclrs = agattr(g, AGEDGE, (char*)"color", "");
+                               if (!eclrs) eclrs = agattr(g, AGEDGE, const_cast<char*>("color"), "");
                                genBundleColors(edge, buf, maxwgt);
                                agxset(e, eclrs, buf.str().c_str());
                                buf.str("");