tarantool / luajit / 30530159357

93%

Build Type

push

github

Committed by Buristan

Commit Message

FFI: Shrink container of packed bitfield.

Reported by Huang Haiyang.

(cherry picked from commit e4c7d8b38)

The bitfield of packed structure uses the original type size, which
leads to heap-buffer-overflow access on conversions.

This patch fixes it by adjusting the size of the bitfield container when
necessary.

Sergey Kaplun:
* added the description and the test for the problem

Part of tarantool/tarantool#12880

Reviewed-by: Evgeniy Temirgaleev <e.temirgaleev@tarantool.org>
Reviewed-by: Sergey Bronnikov <sergeyb@tarantool.org>
Signed-off-by: Sergey Kaplun <skaplun@tarantool.org>

Coverage Stats

5743 of 6060 branches covered (94.77%)

Branch coverage included in aggregate %.

2 of 2 new or added lines in 1 file covered. (100.0%)

2 existing lines in 1 file now uncovered.

21924 of 23559 relevant lines covered (93.06%)

3971491.1 hits per line