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screen-share: Avoid bit-shifting large values

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Found while running with b_sanitize=undefined, which yields:

runtime error: shift exponent 909199186 is too large for 32-bit type 'int'

Converts the shm_formats to a boolean and checks for the correct pixel
format it directly, instead of trying to gather them all in an array and
then later on to do the check.

Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
This commit is contained in:
Marius Vlad 2021-10-14 01:46:02 +03:00
parent 08ee337e4d
commit af18a0c4c9
1 changed files with 4 additions and 3 deletions
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7
compositor/screen-share.c
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@ -60,7 +60,7 @@ struct shared_output {
struct wl_registry *registry;
struct wl_compositor *compositor;
struct wl_shm *shm;
uint32_t shm_formats;
bool shm_formats_has_xrgb;
struct zwp_fullscreen_shell_v1 *fshell;
struct wl_output *output;
struct wl_surface *surface;
@ -701,7 +701,8 @@ shm_handle_format(void *data, struct wl_shm *wl_shm, uint32_t format)
{
struct shared_output *so = data;
so->parent.shm_formats |= (1 << format);
if (format == WL_SHM_FORMAT_XRGB8888)
so->parent.shm_formats_has_xrgb = true;
}
struct wl_shm_listener shm_listener = {
@ -967,7 +968,7 @@ shared_output_create(struct weston_output *output, int parent_fd)
/* Get SHM formats */
wl_display_roundtrip(so->parent.display);
if (!(so->parent.shm_formats & (1 << WL_SHM_FORMAT_XRGB8888))) {
if (!so->parent.shm_formats_has_xrgb) {
weston_log("Screen share failed: "
"WL_SHM_FORMAT_XRGB8888 not available\n");
goto err_display;