From: Pekka Paalanen <pekka.paala...@collabora.co.uk>

Duplicate these strings to decouple their lifetime from whatever the
backends used. This should prevent hard to catch use after frees and
such problems in the future.

Signed-off-by: Pekka Paalanen <pekka.paala...@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+...@sardemff7.net>
---
 libweston/compositor.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/libweston/compositor.c b/libweston/compositor.c
index d314f2d5..1e62254a 100644
--- a/libweston/compositor.c
+++ b/libweston/compositor.c
@@ -4501,6 +4501,10 @@ static void
 weston_head_release(struct weston_head *head)
 {
        weston_head_detach(head);
+
+       free(head->make);
+       free(head->model);
+       free(head->serial_number);
 }
 
 /** Store monitor make, model and serial number
@@ -4522,9 +4526,13 @@ weston_head_set_monitor_strings(struct weston_head *head,
                                const char *model,
                                const char *serialno)
 {
-       head->make = (char *)make;
-       head->model = (char *)model;
-       head->serial_number = (char *)serialno;
+       free(head->make);
+       free(head->model);
+       free(head->serial_number);
+
+       head->make = make ? strdup(make) : NULL;
+       head->model = model ? strdup(model) : NULL;
+       head->serial_number = serialno ? strdup(serialno) : NULL;
 }
 
 /** Store physical image size
-- 
2.13.6

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