[Bf-blender-cvs] [38f4aeb] master: BLI_Buffer: fix BLI_buffer_resize w/ calloc flag

[Campbell Barton]

Commit: 38f4aeb2d3da02e78307937add8f55ffc4b17845
Author: Campbell Barton
Date:   Sun Oct 4 13:52:13 2015 +1100
Branches: master
https://developer.blender.org/rB38f4aeb2d3da02e78307937add8f55ffc4b17845

BLI_Buffer: fix BLI_buffer_resize w/ calloc flag

When resizing, zero memory when the calloc flag is set,
even when no realloc is done.

===================================================================

M	source/blender/blenlib/intern/buffer.c

===================================================================

diff --git a/source/blender/blenlib/intern/buffer.c b/source/blender/blenlib/intern/buffer.c
index 9e96205..ed47efd 100644
--- a/source/blender/blenlib/intern/buffer.c
+++ b/source/blender/blenlib/intern/buffer.c
@@ -65,6 +65,14 @@ void BLI_buffer_resize(BLI_Buffer *buffer, int new_count)
 			buffer->data = buffer_realloc(buffer, buffer->alloc_count);
 		}
 	}
+	else {
+		if (buffer->flag & BLI_BUFFER_USE_CALLOC) {
+			if (new_count > buffer->count) {
+				memset(POINTER_OFFSET(buffer->data, buffer->elem_size * buffer->count), 0,
+				       buffer->elem_size * (new_count - buffer->count));
+			}
+		}
+	}
 
 	buffer->count = new_count;
 }