From 1f9f9d936b296dbe796b1436c7da7fa3462f7d59 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 17 Oct 2008 15:39:56 +0100
Subject: [PATCH] [pdf] Acquire scaled_font mutex for show_text_glyphs().

We need to be holding the scaled font mutex over a call to draw text
glyphs from within an smask group.
---
 src/cairo-pdf-surface.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/cairo-pdf-surface.c b/src/cairo-pdf-surface.c
index e073eb454..507f52298 100644
--- a/src/cairo-pdf-surface.c
+++ b/src/cairo-pdf-surface.c
@@ -4044,12 +4044,14 @@ _cairo_pdf_surface_write_smask_group (cairo_pdf_surface_t     *surface,
 					      &group->ctm_inverse);
 	break;
     case PDF_SHOW_GLYPHS:
+	CAIRO_MUTEX_LOCK (group->scaled_font->mutex);
 	status = _cairo_pdf_operators_show_text_glyphs (&surface->pdf_operators,
 							group->utf8, group->utf8_len,
 							group->glyphs, group->num_glyphs,
 							group->clusters, group->num_clusters,
 							group->cluster_flags,
 							group->scaled_font);
+	CAIRO_MUTEX_UNLOCK (group->scaled_font->mutex);
 	break;
     }
     if (status)