[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [46586] trunk/blender/source/blender/ editors/gpencil/gpencil_paint.c: fix [#31427] Crash when undoing until no point in grease pencil poly mode

[Campbell Barton]

Revision: 46586
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=46586
Author:   campbellbarton
Date:     2012-05-12 21:23:02 +0000 (Sat, 12 May 2012)
Log Message:
-----------
fix [#31427] Crash when undoing until no point in grease pencil poly mode

Modified Paths:
--------------
    trunk/blender/source/blender/editors/gpencil/gpencil_paint.c

Modified: trunk/blender/source/blender/editors/gpencil/gpencil_paint.c
===================================================================
--- trunk/blender/source/blender/editors/gpencil/gpencil_paint.c	2012-05-12 21:11:48 UTC (rev 46585)
+++ trunk/blender/source/blender/editors/gpencil/gpencil_paint.c	2012-05-12 21:23:02 UTC (rev 46586)
@@ -321,7 +321,12 @@
 {
 	bGPdata *gpd = p->gpd;
 	tGPspoint *pt;
-	
+
+	/* sanity check, can happen after undo [#31427] */
+	if (p->flags & GP_PAINTFLAG_STROKEADDED && p->gpf->strokes.last == NULL) {
+		p->flags &= ~GP_PAINTFLAG_STROKEADDED;
+	}
+
 	/* check painting mode */
 	if (p->paintmode == GP_PAINTMODE_DRAW_STRAIGHT) {
 		/* straight lines only - i.e. only store start and end point in buffer */