http://bugs.gentoo.org/361941

--- plugins/image_loader/png_loader.c
+++ plugins/image_loader/png_loader.c
@@ -255,7 +255,7 @@
       return NULL;
    }
 
-   if (setjmp (png_ptr->jmpbuf)) goto ERROR;
+   if (setjmp (png_jmpbuf(png_ptr))) goto ERROR;
 
    context.gio = gio;
    context.bytes_read = 0;
--- plugins/image_saver/png_saver.c
+++ plugins/image_saver/png_saver.c
@@ -130,7 +130,7 @@
       return FALSE;
    }
 
-   if (setjmp (png_ptr->jmpbuf)) {
+   if (setjmp (png_jmpbuf(png_ptr))) {
       png_destroy_write_struct (&png_ptr, &info_ptr);
       fclose (handle);
       return FALSE;