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drm backend: overflow fixes

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These operations are done in 32-bit arithmetics before being casted to 64-bit,
thus can overflow before the cast.
Casting early fixes the issue.

Found through static analysis
This commit is contained in:
Dominique Martinet 2018-06-30 09:59:44 +09:00
parent 63eb720871
commit f0d455f088
2 changed files with 3 additions and 3 deletions
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2
backend/drm/drm.c
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@ -973,7 +973,7 @@ int handle_drm_event(int fd, uint32_t mask, void *data) {
}
void restore_drm_outputs(struct wlr_drm_backend *drm) {
uint64_t to_close = (1 << wl_list_length(&drm->outputs)) - 1;
uint64_t to_close = (1L << wl_list_length(&drm->outputs)) - 1;
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link) {