fix crash when copying empty selection to clipboard (#4783)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54230 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/stc/ScintillaWX.cpp b/src/stc/ScintillaWX.cpp
index b68bde05d30cccff3badc7f658844e2716f2782b..3f2b272c819b71d26b715e435631de81477cd2e5 100644 (file)
--- a/src/stc/ScintillaWX.cpp
+++ b/src/stc/ScintillaWX.cpp
@@ -523,6 +523,9 @@ void ScintillaWX::Paste() {
 
 void ScintillaWX::CopyToClipboard(const SelectionText& st) {
 #if wxUSE_CLIPBOARD
 
 void ScintillaWX::CopyToClipboard(const SelectionText& st) {
 #if wxUSE_CLIPBOARD

+    if ( !st.len )
+        return;
+

     wxTheClipboard->UsePrimarySelection(false);
     if (wxTheClipboard->Open()) {
         wxString text = wxTextBuffer::Translate(stc2wx(st.s, st.len-1));
     wxTheClipboard->UsePrimarySelection(false);
     if (wxTheClipboard->Open()) {
         wxString text = wxTextBuffer::Translate(stc2wx(st.s, st.len-1));