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Fix "Wayland: NULL pointer dereference in Fl::cairo_make_current()" (#1359)

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This commit is contained in:
ManoloFLTK 2026-01-11 12:09:41 +01:00
parent e59a5dc804
commit 7b6a779fd3
1 changed files with 2 additions and 2 deletions
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4
src/Fl_Cairo.cxx
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@ -150,8 +150,8 @@ cairo_t *Fl::cairo_make_current(Fl_Window *wi) {
#if defined(FLTK_USE_WAYLAND)
if (fl_wl_display()) { // true means using wayland backend
struct wld_window *xid = fl_wl_xid(wi);
if (!xid->buffer)
return NULL; // this may happen with GL windows
if (!xid || !xid->buffer)
return NULL; // this may happen with GL windows or if window is not shown
cairo_ctxt = xid->buffer->draw_buffer.cairo_;
Fl::Private::cairo_state_.cc(cairo_ctxt, false);
return cairo_ctxt;