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• skaplun/lj-1252-missing-bit64-coercion
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Build # 9565917637

Build Type

push

github

Committed by Buristan

Commit Message

Check for IR_HREF vs. IR_HREFK aliasing in non-nil store check.

Thanks to Peter Cawley.

(cherry picked from commit 658530562)

The `lj_opt_fwd_wasnonnil()` skips the check for HREF and HREFK that may
alias. Hence, the guard for the non-nil value may be skipped, and the
`__newindex` metamethod call is omitted too.

This patch adds the aforementioned check for different reference types
(HREF vs. HREFK), which were not detected by the previous analysis.
Also, the helper macro `irt_isp32()` is introduced to check that the IR
type is `IRT_P32` (KSLOT type).

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

Part of tarantool/tarantool#9924

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