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-rw-r--r--libdocument/ev-document-misc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/libdocument/ev-document-misc.c b/libdocument/ev-document-misc.c
index 6099b7fa..e7398dee 100644
--- a/libdocument/ev-document-misc.c
+++ b/libdocument/ev-document-misc.c
@@ -180,6 +180,8 @@ ev_document_misc_surface_from_pixbuf (GdkPixbuf *pixbuf)
cairo_surface_t *surface;
cairo_t *cr;
+ g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), NULL);
+
surface = cairo_image_surface_create (gdk_pixbuf_get_has_alpha (pixbuf) ?
CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24,
gdk_pixbuf_get_width (pixbuf),
@@ -195,6 +197,8 @@ ev_document_misc_surface_from_pixbuf (GdkPixbuf *pixbuf)
GdkPixbuf *
ev_document_misc_pixbuf_from_surface (cairo_surface_t *surface)
{
+ g_return_val_if_fail (surface, NULL);
+
GdkPixbuf *pixbuf;
cairo_surface_t *image;
cairo_t *cr;