X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e6933ff9111c872f32f0bab7606251c53375679e..abd474ea63667f727940a009cc3e0b23ba9f418f:/src/common/dcbufcmn.cpp

diff --git a/src/common/dcbufcmn.cpp b/src/common/dcbufcmn.cpp
index ad748d6ca3..2a8314d43e 100644
--- a/src/common/dcbufcmn.cpp
+++ b/src/common/dcbufcmn.cpp
@@ -105,6 +105,8 @@ IMPLEMENT_DYNAMIC_CLASS(wxSharedDCBufferManager, wxModule)
 
 void wxBufferedDC::UseBuffer(wxCoord w, wxCoord h)
 {
+    wxCHECK_RET( w >= -1 && h >= -1, "Invalid buffer size" );
+
     if ( !m_buffer || !m_buffer->IsOk() )
     {
         if ( w == -1 || h == -1 )
@@ -132,7 +134,7 @@ void wxBufferedDC::UnMask()
 
     // Ensure the scale matches the device
     SetUserScale(1.0, 1.0);
-    
+
     if ( m_style & wxBUFFER_CLIENT_AREA )
         GetDeviceOrigin(&x, &y);