[newlib-cygwin/main] Cygwin: fix gcc-14 false positive warnings

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=dc094c76657c2632196d3d67476a6c783ed0c285

commit dc094c76657c2632196d3d67476a6c783ed0c285
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Thu Feb 27 12:17:23 2025 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Thu Feb 27 12:17:23 2025 +0100

    Cygwin: fix gcc-14 false positive warnings
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/sec/acl.cc | 2 +-
 winsup/cygwin/uname.cc   | 8 +++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/winsup/cygwin/sec/acl.cc b/winsup/cygwin/sec/acl.cc
index b92f62493e1e..fa4ea4ceeede 100644
--- a/winsup/cygwin/sec/acl.cc
+++ b/winsup/cygwin/sec/acl.cc
@@ -665,7 +665,7 @@ get_posix_access (PSECURITY_DESCRIPTOR psd,
   mode_t attr = 0;
   aclent_t *lacl = NULL;
   cygpsid ace_sid, *aclsid;
-  int pos, type, idx;
+  int pos = 0, type, idx;
   id_t id;
 
   bool owner_eq_group;
diff --git a/winsup/cygwin/uname.cc b/winsup/cygwin/uname.cc
index 52c807ae54aa..c08e30f97da9 100644
--- a/winsup/cygwin/uname.cc
+++ b/winsup/cygwin/uname.cc
@@ -32,7 +32,7 @@ uname_x (struct utsname *name)
 {
   __try
     {
-      char buf[NI_MAXHOST + 1] ATTRIBUTE_NONSTRING;
+      char buf[NI_MAXHOST + 1];
       int n;
 
       memset (name, 0, sizeof (*name));
@@ -55,7 +55,8 @@ uname_x (struct utsname *name)
       /* nodename */
       memset (buf, 0, sizeof buf);
       cygwin_gethostname (buf, sizeof buf - 1);
-      strncat (name->nodename, buf, sizeof (name->nodename) - 1);
+      buf[sizeof (name->nodename) - 1] = '\0';
+      strcpy (name->nodename, buf);
       /* machine */
       switch (wincap.cpu_arch ())
 	{
@@ -92,7 +93,8 @@ uname_x (struct utsname *name)
       /* domainame */
       memset (buf, 0, sizeof buf);
       getdomainname (buf, sizeof buf - 1);
-      strncat (name->domainname, buf, sizeof (name->domainname) - 1);
+      buf[sizeof (name->domainname) - 1] = '\0';
+      strcpy (name->domainname, buf);
     }
   __except (EFAULT) { return -1; }
   __endtry