Horton

Remove obsolete SAMESIGN macro

Richard Guo <guofenglinux@gmail.com>

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From: Richard Guo <guofenglinux@gmail.com>
To: Pg Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2026-02-19T08:40:08Z
Lists: pgsql-hackers 
The SAMESIGN macro was historically used as a helper for manual
integer overflow checks.  However, since commit 4d6ad3125 introduced
overflow-aware integer operations, this manual sign-checking logic is
no longer necessary.

The macro remains defined in brin_minmax_multi.c and timestamp.c, but
is not used in either file.  Any objections to removing these
definitions to clean things up?

- Richard

Commits

  1. Remove obsolete SAMESIGN macro

  2. Provide overflow safe integer math inline functions.