From dd1a6a6d35cf53f5a93d88a469584dbc3b1960ce Mon Sep 17 00:00:00 2001 From: Paul Cornett Date: Sun, 28 Oct 2018 09:15:33 -0700 Subject: [PATCH] Avoid NULL pointer dereference when calling GetScaleFactor() on invalid bitmap with GTK+3 --- src/gtk/bitmap.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/gtk/bitmap.cpp b/src/gtk/bitmap.cpp index 40f04c0b3c..cfd87549d9 100644 --- a/src/gtk/bitmap.cpp +++ b/src/gtk/bitmap.cpp @@ -981,6 +981,8 @@ bool wxBitmap::CreateScaled(int w, int h, int depth, double scale) double wxBitmap::GetScaleFactor() const { + wxCHECK_MSG(m_refData, -1, "invalid bitmap"); + return M_BMPDATA->m_scaleFactor; }