tarantool / luajit / 6803001467

70%

tarantool/master: 93%

Build Type

push

github

Committed by igormunkin

Commit Message

Prevent compile of __concat with tailcall to fast function.

E.g. __concat = function() return setmetatable(...) end
Reported by Fezile Manana.

(cherry-picked from commit 75ee3a615)

During the recording of concat with tailcall to fast function,
the fast function recording is postponed. This implementation
may lead to the absence of side effects from fast-function and
incorrect behavior as a result. For a comprehensive example,
see the comment in the test.

Maxim Kokryashkin:
* added the description and the test for the problem

Part of tarantool/tarantool#9145

Reviewed-by: Sergey Kaplun <skaplun@tarantool.org>
Reviewed-by: Sergey Bronnikov <sergeyb@tarantool.org>
Signed-off-by: Igor Munkin <imun@tarantool.org>
(cherry picked from commit b0ee54de3)

Run Details

5313 of 5956 branches covered (0.0%)

Branch coverage included in aggregate %.

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

14 existing lines in 3 files now uncovered.

20372 of 23212 relevant lines covered (87.76%)

691297.65 hits per line