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79c89f1f4e
array_position and its cousin array_positions were caching the element type equality function's FmgrInfo without being careful enough to put it in a long-lived context. This is obviously broken but it didn't matter in most cases; only when using arrays of records (involving record_eq) it becomes a problem. The fix is to ensure that the type's equality function's FmgrInfo is cached in the array_position's flinfo->fn_mcxt rather than the current memory context. Apart from record types, the only other case that seems complex enough to possibly cause the same problem are range types. I didn't find a way to reproduce the problem with those, so I only include the test case submitted with the bug report as regression test. Bug report and patch: Junseok Yang Discussion: https://postgr.es/m/CAE+byMupUURYiZ6bKYgMZb9pgV1CYAijJGqWj-90W=nS7uEOeA@mail.gmail.com Backpatch to 9.5, where array_position appeared. |
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