From 3e5b8b1e1dec6e97b77ddb118270babb78986cb6 Mon Sep 17 00:00:00 2001
From: Laurens van der Maaten <lvdmaaten@gmail.com>
Date: Wed, 20 Apr 2016 14:16:27 -0400
Subject: Fix bicubic interpolation when source has size 1

The bicubic interpolation code accesses non-allocated memory when `src_len` is 1 because it doesn't have a special case like bilinear interpolation does. This PR addresses that bug.

I ran the following test to confirm it works:
```
require 'image'
im = torch.randn(3, 2, 3):float()
for n = 1,1000 do resim = image.scale(im, 256, 768, 'bicubic') end
```
---
 generic/image.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/generic/image.c b/generic/image.c
index 33a5293..0990814 100755
--- a/generic/image.c
+++ b/generic/image.c
@@ -166,6 +166,12 @@ static void image_(Main_scaleCubic_rowcol)(THTensor *Tsrc,
     long i;
     for( i = 0; i < dst_len; i++ )
       dst[ dst_start + i*dst_stride ] = src[ src_start + i*src_stride ];
+  } else if ( src_len == 1 ) {
+     long i;
+     for( i = 0; i < dst_len - 1; i++ ) {
+       long dst_pos = dst_start + i*dst_stride;
+       dst[dst_pos] = src[ src_start ];
+     }
   } else {
     long di;
     float si_f;
-- 
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