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Added safety check to NormCenters [skip ci]

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Andrew Kane
2024-04-23 15:43:04 -07:00
parent 9cd789fe06
commit 60ceaea4f2
1 changed files with 5 additions and 1 deletions
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6
src/ivfkmeans.c
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@@ -103,8 +103,12 @@ NormCenters(FmgrInfo *normalizeprocinfo, Oid collation, VectorArray centers)
{
Datum center = PointerGetDatum(VectorArrayGet(centers, j));
Datum newCenter = IvfflatNormValue(normalizeprocinfo, collation, center);
Size size = VARSIZE_ANY(DatumGetPointer(newCenter));
memcpy(DatumGetPointer(center), DatumGetPointer(newCenter), VARSIZE_ANY(DatumGetPointer(newCenter)));
if (size > centers->itemsize)
elog(ERROR, "safety check failed");
memcpy(DatumGetPointer(center), DatumGetPointer(newCenter), size);
MemoryContextReset(normCtx);
}