Avoid crash when selecting on non-channel.

From-SVN: r168473

diff --git a/gcc/go/gofrontend/statements.cc b/gcc/go/gofrontend/statements.cc
index b5ded99e158c57028c00445b18c638e783d2eee5..3498598754a3b4cabcf6ab8a2c5603b5f6d5beea 100644 (file)
--- a/gcc/go/gofrontend/statements.cc
+++ b/gcc/go/gofrontend/statements.cc
@@ -4165,6 +4165,14 @@ Select_clauses::get_tree(Translate_context* context,
          continue;
        }
 
+      if (p->channel()->type()->channel_type() == NULL)
+       {
+         // We should have given an error in the send or receive
+         // statement we created via lowering.
+         gcc_assert(saw_errors());
+         return error_mark_node;
+       }
+
       tree channel_tree = p->channel()->get_tree(context);
       if (channel_tree == error_mark_node)
        return error_mark_node;