X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5c33522fca7cddc441a316f5b9fb50d7685435ba..b53aea81d2e102224b452ef5bf7aee1132f37c6f:/src/common/glcmn.cpp

diff --git a/src/common/glcmn.cpp b/src/common/glcmn.cpp
index b3e1f57502..4f5f9c6025 100644
--- a/src/common/glcmn.cpp
+++ b/src/common/glcmn.cpp
@@ -118,6 +118,9 @@ void wxGLCanvasBase::OnSize(wxSizeEvent& WXUNUSED(event))
 /* static */
 bool wxGLCanvasBase::IsExtensionInList(const char *list, const char *extension)
 {
+    if ( !list )
+        return false;
+
     for ( const char *p = list; *p; p++ )
     {
         // advance up to the next possible match