From 2abda17d8ed2794ff5b4bc0d9f61d30d8ffac651 Mon Sep 17 00:00:00 2001
From: Josh Blum
Date: Sat, 29 Sep 2012 20:29:27 -0700
Subject: core: fix implicit assumption in skiphead

skiphead is a gr_block, not sync block, but assumes that the number of input items is at least the number of output items

remove this assumption and make this safe with std::min(ninputs, noutputs)

may be necessary with new scheduler patches that can vary the circular buffer sizes
---
 gnuradio-core/src/lib/general/gr_skiphead.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'gnuradio-core/src/lib/general/gr_skiphead.cc')

diff --git a/gnuradio-core/src/lib/general/gr_skiphead.cc b/gnuradio-core/src/lib/general/gr_skiphead.cc
index c887376e4..7b441bea9 100644
--- a/gnuradio-core/src/lib/general/gr_skiphead.cc
+++ b/gnuradio-core/src/lib/general/gr_skiphead.cc
@@ -43,14 +43,14 @@ gr_make_skiphead (size_t itemsize, uint64_t nitems_to_skip)
 
 int
 gr_skiphead::general_work(int noutput_items,
-			  gr_vector_int &ninput_items_ignored,
+			  gr_vector_int &ninput_items_,
 			  gr_vector_const_void_star &input_items,
 			  gr_vector_void_star &output_items)
 {
   const char *in = (const char *) input_items[0];
   char *out = (char *) output_items[0];
 
-  int ninput_items = noutput_items;	// we've got at least this many input items
+  int ninput_items = std::min(ninput_items_[0], noutput_items);
   int ii = 0;				// input index
 
   while (ii < ninput_items){
-- 
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