Prevent index access error

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71828 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/richtext/richtextbuffer.cpp b/src/richtext/richtextbuffer.cpp
index 6b54b33dc359c1700776e4188f9c9c25ccd86a37..b0054947250981a5f4befc0d27f35ad4c4d8d044 100644 (file)
--- a/src/richtext/richtextbuffer.cpp
+++ b/src/richtext/richtextbuffer.cpp
@@ -4831,7 +4831,7 @@ bool wxRichTextParagraph::Layout(wxDC& dc, wxRichTextDrawingContext& context, co
 
             // Line end position shouldn't be the same as the end, or greater.
             if (wrapPosition >= GetRange().GetEnd())
-                wrapPosition = GetRange().GetEnd()-1;
+                wrapPosition = wxMax(0, GetRange().GetEnd()-1);
 
             // wxLogDebug(wxT("Split at %ld"), wrapPosition);