feat: compatibility with pg 18beta1

The `lowerstr` function was removed in favor of `str_tolower`

Author: steve-chavez

.github/workflows/main.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        pg-version: ['13', '14', '15', '16', '17']
+        pg-version: ['13', '14', '15', '16', '17', '18']
 
     steps:
       - uses: actions/checkout@v4

nix/xpg.nix

@@ -3,8 +3,8 @@ let
   dep = fetchFromGitHub {
     owner  = "steve-chavez";
     repo   = "xpg";
-    rev    = "v1.3.2";
-    sha256 = "sha256-ooYqMOQD9y+/87wBd33Mvbpsx+FwEMdZoibGRM4gvBk=";
+    rev    = "v1.4.1";
+    sha256 = "sha256-OI9g78KbguLh+ynOnRmnMM4lVOgNRAWkiI/YMmcMs+k=";
   };
   xpg = import dep;
 in

src/pg_prelude.h

@@ -9,6 +9,7 @@
 #include <catalog/namespace.h>
 #include <catalog/pg_authid.h>
 #include <catalog/pg_proc.h>
+#include <catalog/pg_collation_d.h>
 #include <commands/defrem.h>
 #include <commands/publicationcmds.h>
 #include <commands/defrem.h>
@@ -36,5 +37,6 @@
 #include <utils/regproc.h>
 #include <utils/snapmgr.h>
 #include <utils/varlena.h>
+#include <utils/formatting.h>
 
 #pragma GCC diagnostic pop

src/supautils.c

@@ -1144,7 +1144,7 @@ static bool restrict_placeholders_check_hook(char **newval, __attribute__ ((unus
 
   if(*newval && not_empty) {
     char *token, *string, *tofree;
-    char *val = lowerstr(*newval);
+    char *val = str_tolower(*newval, strlen(*newval), DEFAULT_COLLATION_OID);
 
     tofree = string = pstrdup(placeholders_disallowed_values);