Change #271316

Comments

avutil: zero size output parameter on allocation failure
Several _alloc() functions taking a size_t *size output parameter
either left it uninitialized or unconditionally set it to sizeof(...)
when the underlying av_mallocz() failed. Callers that check the
returned pointer first are unaffected, but the stale value is a trap
for any code path that inspects size without a NULL check.

Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

Changed files

• libavutil/ambient_viewing_environment.c
• libavutil/dovi_meta.c
• libavutil/film_grain_params.c
• libavutil/hdr_dynamic_metadata.c
• libavutil/hdr_dynamic_vivid_metadata.c
• libavutil/mastering_display_metadata.c
• libavutil/spherical.c
• libavutil/stereo3d.c