From a111deb45559296d6eadded9226df68af21c0477 Mon Sep 17 00:00:00 2001
From: Josh Blum
Date: Wed, 16 Mar 2011 14:51:58 -0700
Subject: runtime: changes to block headers to allow pure virtual sub-classes
 (interfaces)

---
 gnuradio-core/src/lib/runtime/gr_block.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'gnuradio-core/src/lib/runtime/gr_block.h')

diff --git a/gnuradio-core/src/lib/runtime/gr_block.h b/gnuradio-core/src/lib/runtime/gr_block.h
index ad7fa9555..fc22f9ea8 100644
--- a/gnuradio-core/src/lib/runtime/gr_block.h
+++ b/gnuradio-core/src/lib/runtime/gr_block.h
@@ -236,7 +236,7 @@ class gr_block : public gr_basic_block {
   tag_propagation_policy_t d_tag_propagation_policy; // policy for moving tags downstream
     
  protected:
-
+  gr_block (void){} //allows pure virtual interface sub-classes
   gr_block (const std::string &name,
             gr_io_signature_sptr input_signature,
             gr_io_signature_sptr output_signature);
-- 
cgit