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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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4
src/backend/utils/adt/xml.c
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@@ -891,8 +891,8 @@ xmltotext_with_options(xmltype *data, XmlOptionType xmloption_arg, bool indent)
xmltype *
xmlelement(XmlExpr *xexpr,
Datum *named_argvalue, bool *named_argnull,
Datum *argvalue, bool *argnull)
const Datum *named_argvalue, const bool *named_argnull,
const Datum *argvalue, const bool *argnull)
{
#ifdef USE_LIBXML
xmltype *result;