valgrindify init/fini routines

Annotate object init/fini routines to detect use-after-free for
on-stack/embedded objects.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/cairo-pen.c b/src/cairo-pen.c
index eb66b1a0..b2fd8557 100644
--- a/src/cairo-pen.c
+++ b/src/cairo-pen.c
@@ -58,6 +58,8 @@ _cairo_pen_init (cairo_pen_t	*pen,
     if (CAIRO_INJECT_FAULT ())
 	return _cairo_error (CAIRO_STATUS_NO_MEMORY);
 
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pen, sizeof (cairo_pen_t)));
+
     pen->radius = radius;
     pen->tolerance = tolerance;
 
@@ -103,13 +105,15 @@ _cairo_pen_fini (cairo_pen_t *pen)
     if (pen->vertices != pen->vertices_embedded)
 	free (pen->vertices);
 
-    pen->vertices = pen->vertices_embedded;
-    pen->num_vertices = 0;
+
+    VG (VALGRIND_MAKE_MEM_NOACCESS (pen, sizeof (cairo_pen_t)));
 }
 
 cairo_status_t
 _cairo_pen_init_copy (cairo_pen_t *pen, const cairo_pen_t *other)
 {
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (pen, sizeof (cairo_pen_t)));
+
     *pen = *other;
 
     if (CAIRO_INJECT_FAULT ())