valgrindify init/fini routines

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

1 files changed, 7 insertions, 0 deletions

diff --git a/src/cairo-gstate.c b/src/cairo-gstate.c
index 6a1fa726..8f6f01b7 100644
--- a/src/cairo-gstate.c
+++ b/src/cairo-gstate.c
@@ -77,6 +77,8 @@ _cairo_gstate_init (cairo_gstate_t  *gstate,
 {
     cairo_status_t status;
 
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
+
     gstate->next = NULL;
 
     gstate->op = CAIRO_GSTATE_OPERATOR_DEFAULT;
@@ -140,6 +142,8 @@ _cairo_gstate_init_copy (cairo_gstate_t *gstate, cairo_gstate_t *other)
 {
     cairo_status_t status;
 
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (gstate, sizeof (cairo_gstate_t)));
+
     gstate->op = other->op;
 
     gstate->tolerance = other->tolerance;
@@ -212,6 +216,8 @@ _cairo_gstate_fini (cairo_gstate_t *gstate)
 
     cairo_pattern_destroy (gstate->source);
     gstate->source = NULL;
+
+    VG (VALGRIND_MAKE_MEM_NOACCESS (gstate, sizeof (cairo_gstate_t)));
 }
 
 /**
@@ -270,6 +276,7 @@ _cairo_gstate_restore (cairo_gstate_t **gstate, cairo_gstate_t **freelist)
     *gstate = top->next;
 
     _cairo_gstate_fini (top);
+    VG (VALGRIND_MAKE_MEM_UNDEFINED (&top->next, sizeof (cairo_gstate_t *)));
     top->next = *freelist;
     *freelist = top;