notcurses_debug: show binding information #656

src/lib/debug.c

@@ -9,6 +9,13 @@ void notcurses_debug(notcurses* nc, FILE* debugfp){
     fprintf(debugfp, "%04d off y: %3d x: %3d geom y: %3d x: %3d curs y: %3d x: %3d %s %p\n",
             planeidx, n->absy, n->absx, n->leny, n->lenx, n->y, n->x,
             n == notcurses_stdplane_const(nc) ? "std" : "   ", n);
+    if(n->bound || n->bnext || n->blist){
+      fprintf(debugfp, " bound to %p, next bound %p, bind %p\n",
+              n->bound, n->bnext, n->blist);
+    }
+    if(n->bound == n || n->bnext == n || n->blist == n){
+      fprintf(debugfp, "WARNING: bound pointers target self\n");
+    }
     if(n->above != prev){
       fprintf(stderr, " WARNING: expected ->above %p, got %p\n", prev, n->above);
     }