tarantool / luajit / 22345582887 / 1

93%

tarantool/master: 93%

push

github

Prevent snapshot purge while recording a function header.

Thanks to Sergey Kaplun.

(cherry picked from commit d459c6ce5)

This patch is a follow-up to the commit
7505e78bd "Handle on-trace OOM errors
from helper functions.". Since this commit, the `pcall()` (and
`xpcall()`) emits an additional snapshot, but the arguments to the
pcall-ed function are momentarily purged from the snapshot since they
are not used. Hence, in several cases `debug.getlocal()` can't find the
corresponding slot for the previous frame.

This patch prevents purging right after `pcall()`, `xpcall()` recording.

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

Part of tarantool/tarantool#12134

5713 of 6046 branches covered (94.49%)

Branch coverage included in aggregate %.

21804 of 23513 relevant lines covered (92.73%)

3875830.41 hits per line