inet_net_pton.c: use pg_ascii_tolower() rather than tolower().

jeff-davis · jeff-davis · commit 8898082a5d3e · 2025-06-10T11:23:20.000-07:00
Avoid dependence on setlocale(). No behavior change. Discussion: https://postgr.es/m/9875f7f9-50f1-4b5d-86fc-ee8b03e8c162@eisentraut.org Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
diff --git a/src/backend/utils/adt/inet_net_pton.c b/src/backend/utils/adt/inet_net_pton.c
@@ -115,8 +115,7 @@ inet_cidr_pton_ipv4(const char *src, u_char *dst, size_t size)
 		src++;					/* skip x or X. */
 		while ((ch = *src++) != '\0' && isxdigit((unsigned char) ch))
 		{
-			if (isupper((unsigned char) ch))
-				ch = tolower((unsigned char) ch);
+			ch = pg_ascii_tolower((unsigned char) ch);
 			n = strchr(xdigits, ch) - xdigits;
 			assert(n >= 0 && n <= 15);
 			if (dirty == 0)
