fix cut and paste into macro editor crash

e.g. select all in macro editor in virtualbox and paste
into Linux macro editor and explode in debugging iterator
land.

regression due to IA2 integration of
efb23f29983f87104a684e7fab00b84fc59d131d

Change-Id: Ic7a4e9f5455f4ba3eaf0afd38fd5e445d6dc28e6

1 files changed, 12 insertions, 3 deletions

diff --git a/accessibility/source/extended/textwindowaccessibility.cxx b/accessibility/source/extended/textwindowaccessibility.cxx
index ad19eafbdf16..052aac68c822 100644
--- a/accessibility/source/extended/textwindowaccessibility.cxx
+++ b/accessibility/source/extended/textwindowaccessibility.cxx
@@ -2219,15 +2219,24 @@ void Document::handleParagraphNotifications()
 
 void Document::sendEvent(::sal_Int32 start, ::sal_Int32 end, ::sal_Int16 nEventId)
 {
-     Paragraphs::iterator aEnd = ::std::min(m_xParagraphs->begin() + end + 1, m_aVisibleEnd);
-    for (Paragraphs::iterator aIt = ::std::max(m_xParagraphs->begin() + start, m_aVisibleBegin);
-         aIt < aEnd; ++aIt)
+    size_t nAvailDistance = std::distance(m_xParagraphs->begin(), m_aVisibleEnd);
+
+    Paragraphs::iterator aEnd(m_xParagraphs->begin());
+    size_t nEndDistance = std::min<size_t>(end + 1, nAvailDistance);
+    std::advance(aEnd, nEndDistance);
+
+    Paragraphs::iterator aIt(m_xParagraphs->begin());
+    size_t nStartDistance = std::min<size_t>(start, nAvailDistance);
+    std::advance(aIt, nStartDistance);
+
+    while (aIt < aEnd)
     {
         ::rtl::Reference< Paragraph > xParagraph(getParagraph(aIt));
         if (xParagraph.is())
             xParagraph->notifyEvent(
             nEventId,
                 ::css::uno::Any(), ::css::uno::Any());
+        ++aIt;
     }
 }