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Build # 8261077426

Build Type

push

github

Committed by Buristan

Commit Message

Fix recording of __concat metamethod.

Thanks to Sergey Kaplun.

(cherry picked from commit bcc5125a9)

`lj_record_ret()` uses `J->L->base` as a base for recording
concatenation with remaining operands, even if there is a vararg frame
or pcall frame (so it uses the wrong Lua stack slots from a frame
above). This leads to the corresponding assertion failure in the
`lj_record_mm_lookup()`.

This patch adds the calculation of the base adjusment necessary for
correct frame usage.

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

Part of tarantool/tarantool#9595

Run Details

5658 of 6017 branches covered (94.03%)

Branch coverage included in aggregate %.

5 of 5 new or added lines in 1 file covered. (100.0%)

21 existing lines in 5 files now uncovered.

21594 of 23414 relevant lines covered (92.23%)

2821443.66 hits per line