[Bf-blender-cvs] [ea835c8] blender-v2.76-release: Fix T46339: Edge sliding when there is only one vertex in the mesh crashes blender.

[Bastien Montagne]

Commit: ea835c8a73508f116c31aec7e9a90409a4deeec3
Author: Bastien Montagne
Date:   Thu Oct 1 12:03:09 2015 +0200
Branches: blender-v2.76-release
https://developer.blender.org/rBea835c8a73508f116c31aec7e9a90409a4deeec3

Fix T46339: Edge sliding when there is only one vertex in the mesh crashes blender.

If t->mode remains edge/vert slide, restoreTransObjects() ends up calling
projectVert/EdgeSlideData(), which tries to access invalid customdata...

Not sure why we call again restoreTransObjects() and resetTransRestrictions() here tbh,
but safer not to change that for now.

Should be backported to 2.76 if possible.

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

M	source/blender/editors/transform/transform.c

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

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index d8000f0..8e867eb 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -1037,6 +1037,7 @@ int transformEvent(TransInfo *t, const wmEvent *event)
 							}
 							/* vert slide can fail on unconnected vertices (rare but possible) */
 							if (t->state == TRANS_CANCEL) {
+								t->mode = TFM_TRANSLATION;
 								t->state = TRANS_STARTING;
 								restoreTransObjects(t);
 								resetTransRestrictions(t);