# HG changeset patch
# User Jonathan Kew <jkew@mozilla.com>
# Date 1715706811 -3600
#      Tue May 14 18:13:31 2024 +0100
# Node ID c3ad2cb3ec3c7833187b9cea6002632cb1b692b4
# Parent  4df4e109202ff67836eaa61c66a7c65a2f712e11
Bug 1896173 - Check that we have a render_node name before attempting MCID tagging in pdf output. r=#gfx-reviewers

diff --git a/gfx/cairo/cairo/src/cairo-pdf-interchange.c b/gfx/cairo/cairo/src/cairo-pdf-interchange.c
--- a/gfx/cairo/cairo/src/cairo-pdf-interchange.c
+++ b/gfx/cairo/cairo/src/cairo-pdf-interchange.c
@@ -2043,7 +2043,7 @@ cairo_int_status_t
 	    if (command_list_has_content (surface, command_id, NULL)) {
 		ic->render_next_command_has_content = TRUE;
 	    }
-	} else if (ic->render_next_command_has_content) {
+	} else if (ic->render_next_command_has_content && ic->current_render_node->name) {
 	    add_mcid_to_node (surface, ic->current_render_node, ic->command_id, &mcid);
 	    status = _cairo_pdf_operators_tag_begin (&surface->pdf_operators,
 						     ic->current_render_node->name, mcid);