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Mark function arguments of type "Datum *" as "const Datum *" where possible

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Several functions in the codebase accept "Datum *" parameters but do
not modify the pointed-to data.  These have been updated to take
"const Datum *" instead, improving type safety and making the
interfaces clearer about their intent.  This change helps the compiler
catch accidental modifications and better documents immutability of
arguments.

Most of "Datum *" parameters have a pairing "bool *isnull" parameter,
they are constified as well.

No functional behavior is changed by this patch.

Author: Chao Li <lic@highgo.com>
Discussion: https://www.postgresql.org/message-id/flat/CAEoWx2msfT0knvzUa72ZBwu9LR_RLY4on85w2a9YpE-o2By5HQ@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2025-10-31 10:45:02 +01:00
parent aa4535307e
commit 8a27d418f8
34 changed files with 145 additions and 145 deletions
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6
src/backend/partitioning/partbounds.c
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@@ -3555,8 +3555,8 @@ partition_rbound_cmp(int partnatts, FmgrInfo *partsupfunc,
*/
int32
partition_rbound_datum_cmp(FmgrInfo *partsupfunc, Oid *partcollation,
Datum *rb_datums, PartitionRangeDatumKind *rb_kind,
Datum *tuple_datums, int n_tuple_datums)
const Datum *rb_datums, PartitionRangeDatumKind *rb_kind,
const Datum *tuple_datums, int n_tuple_datums)
{
int i;
int32 cmpval = -1;
@@ -3695,7 +3695,7 @@ partition_range_bsearch(int partnatts, FmgrInfo *partsupfunc,
int
partition_range_datum_bsearch(FmgrInfo *partsupfunc, Oid *partcollation,
PartitionBoundInfo boundinfo,
int nvalues, Datum *values, bool *is_equal)
int nvalues, const Datum *values, bool *is_equal)
{
int lo,
hi,