Fix bug #1196 using patch provided by Michelle Baert <m.baert@free.fr>

diff --git a/lib/common/diagen.c b/lib/common/diagen.c
index 03a270120e70466394cb4d88048928955ddc166a..1d268c083bdc381db9b7a33515b94e7ea58ae99d 100644 (file)
--- a/lib/common/diagen.c
+++ b/lib/common/diagen.c
@@ -777,96 +777,97 @@ dia_bezier(point * A, int n, int arrow_at_start, int arrow_at_end, int filled)
     dia_printf("        <dia:rectangle val=\"%g,%g;%g,%g\"/>\n",
               llp.x - .11, llp.y - .11, urp.x + .11, urp.y + .11);
     dia_fputs("      </dia:attribute>\n");
-    if (!Curedge) return;
 
-    conn_h = conn_t = -1;
-
-    head = Curedge->head;
-    tail = Curedge->tail;
-
-    shape_t = ND_shape(tail)->name;
-
-    /* arrowheads */
-    if (arrow_at_start) {
-       dia_fputs("      <dia:attribute name=\"start_arrow\">\n");
-       dia_fputs("          <dia:enum val=\"3\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-       dia_fputs("      <dia:attribute name=\"start_arrow_length\">\n");
-       dia_fputs("             <dia:real val=\"0.8\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-       dia_fputs
-           ("           <dia:attribute name=\"start_arrow_width\">\n");
-       dia_fputs("                     <dia:real val=\"0.8\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-    }
-    if (arrow_at_end) {
-       dia_fputs("      <dia:attribute name=\"end_arrow\">\n");
-       dia_fputs("          <dia:enum val=\"3\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-       dia_fputs("      <dia:attribute name=\"end_arrow_length\">\n");
-       dia_fputs("             <dia:real val=\"0.8\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-       dia_fputs
-           ("           <dia:attribute name=\"end_arrow_width\">\n");
-       dia_fputs("                     <dia:real val=\"0.8\"/>\n");
-       dia_fputs("      </dia:attribute>\n");
-    }
-
-    dia_fputs("      <dia:attribute name=\"conn_endpoints\">\n");
-    dia_printf("        <dia:point val=\"%g,%g\"/>\n", diapt(A[0]).x,
-              diapt(A[0]).y);
-    dia_printf("        <dia:point val=\"%g,%g\"/>\n", diapt(A[n - 1]).x,
-              diapt(A[n - 1]).y);
-    dia_fputs("      </dia:attribute>\n");
-    dia_fputs("      <dia:connections>\n");
-
-    if ((strcmp(shape_t, "ellipse") == 0)
-       || (strcmp(shape_t, "circle") == 0)
-       || (strcmp(shape_t, "doublecircle") == 0)) {
-       cp_h = diapt(ND_coord_i(head));
-       if (AG_IS_DIRECTED(Rootgraph))
-           conn_h = ellipse_connection(cp_h, diapt(A[n - 1]));
-       else
-           conn_h = ellipse_connection(cp_h, diapt(A[0]));
-    } else {
-       if (AG_IS_DIRECTED(Rootgraph))
-           conn_h = box_connection(head, diapt(A[n - 1]));
-       else
-           conn_h = box_connection(head, diapt(A[0]));
-    }
-
-    if ((strcmp(shape_t, "ellipse") == 0)
-       || (strcmp(shape_t, "circle") == 0)
-       || (strcmp(shape_t, "doublecircle") == 0)) {
-       cp_t = diapt(ND_coord_i(tail));
-       if (AG_IS_DIRECTED(Rootgraph))
-           conn_t = ellipse_connection(cp_t, diapt(A[0]));
-       else
-           conn_t = ellipse_connection(cp_t, diapt(A[n - 1]));
-    } else {
-       if (AG_IS_DIRECTED(Rootgraph))
-           conn_t = box_connection(tail, diapt(A[0]));
-       else
-           conn_t = box_connection(tail, diapt(A[n - 1]));
-    }
+    if (Curedge) {
+        conn_h = conn_t = -1;
+
+        head = Curedge->head;
+        tail = Curedge->tail;
+
+        shape_t = ND_shape(tail)->name;
+
+        /* arrowheads */
+        if (arrow_at_start) {
+           dia_fputs("      <dia:attribute name=\"start_arrow\">\n");
+           dia_fputs("          <dia:enum val=\"3\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+           dia_fputs("      <dia:attribute name=\"start_arrow_length\">\n");
+           dia_fputs("         <dia:real val=\"0.8\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+           dia_fputs
+               ("               <dia:attribute name=\"start_arrow_width\">\n");
+           dia_fputs("                 <dia:real val=\"0.8\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+        }
+        if (arrow_at_end) {
+           dia_fputs("      <dia:attribute name=\"end_arrow\">\n");
+           dia_fputs("          <dia:enum val=\"3\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+           dia_fputs("      <dia:attribute name=\"end_arrow_length\">\n");
+           dia_fputs("         <dia:real val=\"0.8\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+           dia_fputs
+               ("               <dia:attribute name=\"end_arrow_width\">\n");
+           dia_fputs("                 <dia:real val=\"0.8\"/>\n");
+           dia_fputs("      </dia:attribute>\n");
+        }
+    
+        dia_fputs("      <dia:attribute name=\"conn_endpoints\">\n");
+        dia_printf("        <dia:point val=\"%g,%g\"/>\n", diapt(A[0]).x,
+                  diapt(A[0]).y);
+        dia_printf("        <dia:point val=\"%g,%g\"/>\n", diapt(A[n - 1]).x,
+                  diapt(A[n - 1]).y);
+        dia_fputs("      </dia:attribute>\n");
+        dia_fputs("      <dia:connections>\n");
+    
+        if ((strcmp(shape_t, "ellipse") == 0)
+           || (strcmp(shape_t, "circle") == 0)
+           || (strcmp(shape_t, "doublecircle") == 0)) {
+           cp_h = diapt(ND_coord_i(head));
+           if (AG_IS_DIRECTED(Rootgraph))
+               conn_h = ellipse_connection(cp_h, diapt(A[n - 1]));
+           else
+               conn_h = ellipse_connection(cp_h, diapt(A[0]));
+        } else {
+           if (AG_IS_DIRECTED(Rootgraph))
+               conn_h = box_connection(head, diapt(A[n - 1]));
+           else
+               conn_h = box_connection(head, diapt(A[0]));
+        }
+    
+        if ((strcmp(shape_t, "ellipse") == 0)
+           || (strcmp(shape_t, "circle") == 0)
+           || (strcmp(shape_t, "doublecircle") == 0)) {
+           cp_t = diapt(ND_coord_i(tail));
+           if (AG_IS_DIRECTED(Rootgraph))
+               conn_t = ellipse_connection(cp_t, diapt(A[0]));
+           else
+               conn_t = ellipse_connection(cp_t, diapt(A[n - 1]));
+        } else {
+           if (AG_IS_DIRECTED(Rootgraph))
+               conn_t = box_connection(tail, diapt(A[0]));
+           else
+               conn_t = box_connection(tail, diapt(A[n - 1]));
+        }
 
-    if (arrow_at_start) {
-       dia_printf
-           ("        <dia:connection handle=\"0\" to=\"%d\" connection=\"%d\"/>\n",
-            head->id, conn_h);
-       dia_printf
-           ("        <dia:connection handle=\"%d\" to=\"%d\" connection=\"%d\"/>\n",
-            (n - 1), tail->id, conn_t);
-    } else {
-       dia_printf
-           ("        <dia:connection handle=\"0\" to=\"%d\" connection=\"%d\"/>\n",
-            tail->id, conn_t);
-       dia_printf
-           ("        <dia:connection handle=\"%d\" to=\"%d\" connection=\"%d\"/>\n",
-            (n - 1), head->id, conn_h);
+        if (arrow_at_start) {
+           dia_printf
+               ("        <dia:connection handle=\"0\" to=\"%d\" connection=\"%d\"/>\n",
+                head->id, conn_h);
+           dia_printf
+               ("        <dia:connection handle=\"%d\" to=\"%d\" connection=\"%d\"/>\n",
+                (n - 1), tail->id, conn_t);
+        } else {
+           dia_printf
+               ("        <dia:connection handle=\"0\" to=\"%d\" connection=\"%d\"/>\n",
+                tail->id, conn_t);
+           dia_printf
+               ("        <dia:connection handle=\"%d\" to=\"%d\" connection=\"%d\"/>\n",
+                (n - 1), head->id, conn_h);
+        }
+    
+        dia_fputs("      </dia:connections>\n");
     }
-
-    dia_fputs("      </dia:connections>\n");
     dia_fputs("    </dia:object>\n");
 }