diff options
Diffstat (limited to 'src/backend/utils/adt/arrayfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/arrayfuncs.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c index c5336940dab..57c12df0f73 100644 --- a/src/backend/utils/adt/arrayfuncs.c +++ b/src/backend/utils/adt/arrayfuncs.c @@ -2923,7 +2923,14 @@ array_set_slice(Datum arraydatum, errdetail("When assigning to a slice of an empty array value," " slice boundaries must be fully specified."))); - dim[i] = 1 + upperIndx[i] - lowerIndx[i]; + /* compute "upperIndx[i] - lowerIndx[i] + 1", detecting overflow */ + if (pg_sub_s32_overflow(upperIndx[i], lowerIndx[i], &dim[i]) || + pg_add_s32_overflow(dim[i], 1, &dim[i])) + ereport(ERROR, + (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED), + errmsg("array size exceeds the maximum allowed (%d)", + (int) MaxArraySize))); + lb[i] = lowerIndx[i]; } |