PostgreSQL 18 support. (#91)

No code changes are required for PostgreSQL 18 but the PG_MODULE_MAGIC_EXT() macro was added to support module name and version. Since this macro is only supported in the new version add a define for backward compatibility.

Reviewed by John Harvey (@crunchyjohn).

Author: dwsteele

CHANGELOG.md

@@ -1,3 +1,11 @@
+4.2.0
+=====
+
+NEW FEATURES
+------------
+- Add PG_MODULE_MAGIC_EXT() macro for PostgreSQL >= 18.
+- Remove support for PostgreSQL 12.
+
 4.1.0
 =====
 

set_user.control

@@ -1,5 +1,5 @@
 # set_user extension
 comment = 'similar to SET ROLE but with added logging'
-default_version = '4.1.0'
+default_version = '4.2.0'
 module_pathname = '$libdir/set_user'
 relocatable = false

src/compatibility.h

@@ -16,6 +16,16 @@
 #define NO_ASSERT_AUTH_UID_ONCE !USE_ASSERT_CHECKING
 #endif
 
+/*
+ * Define PG_MODULE_MAGIC_EXT() as PG_MODULE_MAGIC for versions where the new
+ * macro does not exist
+ */
+ #if PG_VERSION_NUM < 180000
+
+ #define PG_MODULE_MAGIC_EXT(...) PG_MODULE_MAGIC
+
+ #endif /* PG_VERSION_NUM < 180000 */
+
 /*
  * PostgreSQL version 17+
  *

src/set_user.c

@@ -53,11 +53,10 @@
 #include "utils/varlena.h"
 
 #include "set_user.h"
-
-PG_MODULE_MAGIC;
-
 #include "compatibility.h"
 
+PG_MODULE_MAGIC_EXT(.name = "set_user", .version = "4.2.0");
+
 #define ALLOWLIST_WILDCARD	"*"
 #define SUPERUSER_AUDIT_TAG	"AUDIT"
 

updates/set_user--4.1.0--4.2.0.sql

@@ -0,0 +1,2 @@
+-- complain if script is sourced in psql, rather than via ALTER EXTENSION
+\echo Use "ALTER EXTENSION set_user UPDATE" to load this file. \quit