Add some asserts to ensure cols and rows are >= 0 to avoid crashes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65987 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 535cae56c5bbea3a2d8e23e4f90cd7573a61b5ff..959ba220a81b668e69d236fac86000b017745181 100644 (file)
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -1319,6 +1319,7 @@ wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
       m_vgap( vgap ),
       m_hgap( hgap )
 {
+    wxASSERT(cols >= 0);
 }
 
 wxGridSizer::wxGridSizer( int cols, const wxSize& gap )
@@ -1327,6 +1328,7 @@ wxGridSizer::wxGridSizer( int cols, const wxSize& gap )
       m_vgap( gap.GetHeight() ),
       m_hgap( gap.GetWidth() )
 {
+    wxASSERT(cols >= 0);
 }
 
 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
@@ -1335,6 +1337,7 @@ wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
       m_vgap( vgap ),
       m_hgap( hgap )
 {
+    wxASSERT(rows >= 0 && cols >= 0);
 }
 
 wxGridSizer::wxGridSizer( int rows, int cols, const wxSize& gap )
@@ -1343,6 +1346,7 @@ wxGridSizer::wxGridSizer( int rows, int cols, const wxSize& gap )
       m_vgap( gap.GetHeight() ),
       m_hgap( gap.GetWidth() )
 {
+    wxASSERT(rows >= 0 && cols >= 0);
 }
 
 wxSizerItem *wxGridSizer::DoInsert(size_t index, wxSizerItem *item)