tarantool / luajit / 15905693467

93%

tarantool/master: 93%

push

github

ARM64: Fix assembly of HREFK.

Reported by caohongqing.
Fix contributed by Peter Cawley.

(cherry picked from commit 8fbd576fb)

`asm_hrefk()` uses the check for the offset for the corresponding node
structure. However, the target load is performed from its inner `key`
field with the offset 8. In the case of a huge table, it is possible
that the offset of the node (4095 * 8) is less than 4096 * 8 and can be
emitted via the corresponding instruction as an immediate offset, but
the offset of the `key` field is not. This leads to the corresponding
assertion failure in `emit_lso()`.

This patch fixes this behaviour by the correct check.

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

Part of tarantool/tarantool#11278

5712 of 6046 branches covered (94.48%)

Branch coverage included in aggregate %.

21789 of 23508 relevant lines covered (92.69%)

3808235.37 hits per line