akashchamp opened a new pull request, #2589:
URL: https://github.com/apache/age/pull/2589
Fixes #2562.
`SELECT 'null'::agtype ? '"a"'::agtype;` crashes the backend with SIGSEGV.
In `agtype_exists_agtype()`, `extract_entity_properties(agt, false)` returns
NULL for an agtype null scalar (and for an entity with null properties), and
that NULL goes straight into `agtype_value_to_agtype()`.
The fix checks for NULL and returns false, which is what `?` already returns
for other non-container scalars like `'1'` or `'"s"'`. I left `?|` / `?&` alone
since they already raise a clean error for this input. I also added two cases
to `regress/sql/jsonb_operators.sql`.
Testing, against PostgreSQL 18.6 built from source:
- Before the fix, the query from the issue kills the backend ("terminated by
signal 11: Segmentation fault"). With the new test cases and no C change, `make
installcheck` crashes in `jsonb_operators` (17 of 44 failed).
- With the fix, both cases return `f`. `'1' ? '"a"'` still returns `f`, and
the vertex and object cases still return `t`.
- `make installcheck`: all 44 tests passed.
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