Don't read fields of a misaligned ExpandedObjectHeader or AnyArrayType.
UBSan complains about this. Instead, cast to a suitable type requiring
only 4-byte alignment. DatumGetAnyArrayP() already assumes one can cast
between AnyArrayType and ArrayType, so this doesn't introduce a new
assumption. Back-patch to 9.5, where AnyArrayType was introduced.
Reviewed by Tom Lane.
Discussion: https://postgr.es/m/20190629210334.GA1244217@rfd.leadboat.com
Branch
------
REL_11_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/4b85f20f948d885875a1e1b89979e627b86e6e64
Modified Files
--------------
src/backend/utils/adt/arrayfuncs.c | 2 +-
src/include/utils/array.h | 19 +++++++++++++------
src/include/utils/arrayaccess.h | 4 ++--
src/include/utils/expandeddatum.h | 2 +-
4 files changed, 17 insertions(+), 10 deletions(-)
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