X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7b0ca050f7153f3d038243bf1182b23854996788..21cf80399f199a565fc5cffe2cad734313ad4e8f:/src/print_graph.c?ds=sidebyside

diff --git a/src/print_graph.c b/src/print_graph.c
index 7e429dbd..f15bc523 100644
--- a/src/print_graph.c
+++ b/src/print_graph.c
@@ -84,8 +84,11 @@ print_core (struct obstack *oout, state *s)
 
       obstack_1grow (oout, '.');
 
-      for (/* Nothing */; *sp >= 0; ++sp)
-        obstack_printf (oout, " %s", escape (symbols[*sp]->tag));
+      if (0 <= *r->rhs)
+        for (/* Nothing */; *sp >= 0; ++sp)
+          obstack_printf (oout, " %s", escape (symbols[*sp]->tag));
+      else
+        obstack_printf (oout, " %%empty");
 
       /* Experimental feature: display the lookahead tokens. */
       if (report_flag & report_lookahead_tokens