From: Viktor Szakats <commit@vsz.me>
Date: Wed, 18 Feb 2026 12:58:36 +0000 (+0100)
Subject: clang-tidy: enable and fix `readability-uppercase-literal-suffix`
X-Git-Tag: rc-8_19_0-3~97
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c07c3cac746bb899e8014200aad02e5f4bb507de;p=thirdparty%2Fcurl.git

clang-tidy: enable and fix `readability-uppercase-literal-suffix`

Ref: https://clang.llvm.org/extra/clang-tidy/checks/readability/uppercase-literal-suffix.html

Closes #20629
---

diff --git a/.clang-tidy.yml b/.clang-tidy.yml
index 582237eea5..f9187b439b 100644
--- a/.clang-tidy.yml
+++ b/.clang-tidy.yml
@@ -17,4 +17,5 @@ Checks: >-
   portability-*,
   readability-named-parameter,
   readability-redundant-control-flow,
-  readability-redundant-preprocessor
+  readability-redundant-preprocessor,
+  readability-uppercase-literal-suffix
diff --git a/lib/http.c b/lib/http.c
index d5d69a83dc..d56ec19e81 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -539,7 +539,7 @@ CURLcode Curl_http_auth_act(struct Curl_easy *data)
   bool pickhost = FALSE;
   bool pickproxy = FALSE;
   CURLcode result = CURLE_OK;
-  unsigned long authmask = ~0ul;
+  unsigned long authmask = ~0UL;
 
   if(!data->set.str[STRING_BEARER])
     authmask &= (unsigned long)~CURLAUTH_BEARER;
diff --git a/lib/socks.c b/lib/socks.c
index e983d29d11..569d10945c 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -267,8 +267,8 @@ static CURLproxycode socks4_req_add_hd(struct socks_state *sx,
   (void)data;
   buf[0] = 4; /* version (SOCKS4) */
   buf[1] = 1; /* connect */
-  buf[2] = (unsigned char)((sx->remote_port >> 8) & 0xffu); /* MSB */
-  buf[3] = (unsigned char)(sx->remote_port & 0xffu);        /* LSB */
+  buf[2] = (unsigned char)((sx->remote_port >> 8) & 0xffU); /* MSB */
+  buf[3] = (unsigned char)(sx->remote_port & 0xffU);        /* LSB */
 
   result = Curl_bufq_write(&sx->iobuf, buf, 4, &nwritten);
   if(result || (nwritten != 4))
@@ -929,8 +929,8 @@ static CURLproxycode socks5_resolving(struct socks_state *sx,
     goto out;
   }
   /* PORT MSB+LSB */
-  req[0] = (unsigned char)((sx->remote_port >> 8) & 0xffu);
-  req[1] = (unsigned char)(sx->remote_port & 0xffu);
+  req[0] = (unsigned char)((sx->remote_port >> 8) & 0xffU);
+  req[1] = (unsigned char)(sx->remote_port & 0xffU);
   result = Curl_bufq_write(&sx->iobuf, req, 2, &nwritten);
   if(result || (nwritten != 2)) {
     presult = CURLPX_SEND_REQUEST;
diff --git a/lib/vquic/curl_ngtcp2.c b/lib/vquic/curl_ngtcp2.c
index 66bb5770f1..32ccada1bc 100644
--- a/lib/vquic/curl_ngtcp2.c
+++ b/lib/vquic/curl_ngtcp2.c
@@ -2732,7 +2732,7 @@ out:
       default:
         if(cerr->error_code >= NGTCP2_CRYPTO_ERROR) {
           CURL_TRC_CF(data, cf, "crypto error, tls alert=%u",
-                      (unsigned int)(cerr->error_code & 0xffu));
+                      (unsigned int)(cerr->error_code & 0xffU));
         }
         else if(cerr->error_code == NGTCP2_CONNECTION_REFUSED) {
           CURL_TRC_CF(data, cf, "connection refused by server");