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Try to avoid crashing in wxGTK wxCairoContext ctor.

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Don't use an uninitialized pointer in wxCairoContext ctor from wxPrinterDC in
wxGTK if retrieving Cairo context of the DC failed, set m_context to NULL in
this case (not sure if this is still not going to crash when used in
cairo_translate() below though).
This commit is contained in:
Vadim Zeitlin
2015-05-24 02:51:54 +02:00
parent d07c4cb826
commit b6e5a0a679
1 changed files with 2 additions and 0 deletions
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2
src/generic/graphicc.cpp
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@@ -1680,6 +1680,8 @@ wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC&
cairo_t* cr = static_cast<cairo_t*>(impl->GetCairoContext()); cairo_t* cr = static_cast<cairo_t*>(impl->GetCairoContext());
if (cr) if (cr)
Init(cairo_reference(cr)); Init(cairo_reference(cr));
else
m_context = NULL;
#endif #endif
wxSize sz = dc.GetSize(); wxSize sz = dc.GetSize();
m_width = sz.x; m_width = sz.x;