Make use of __diagnose_as_builtin

8 files changed, 66 insertions, 0 deletions

diff --git a/include/fortify-headers.h b/include/fortify-headers.h
index 6f00454..b1e89c3 100644
--- a/include/fortify-headers.h
+++ b/include/fortify-headers.h
@@ -93,6 +93,11 @@
 #define __alloc_size(...)
 #endif
 
+#if __has_attribute (__diagnose_as_builtin)
+#define __diagnose_as_builtin(...) __attribute__ ((__diagnose_as_builtin (__VA_ARGS__)))
+#else
+#define __diagnose_as_builtin(...)
+#endif
 
 #endif /* __has_attribute */
 
diff --git a/include/poll.h b/include/poll.h
index 8e8de6c..10df4b3 100644
--- a/include/poll.h
+++ b/include/poll.h
@@ -31,6 +31,7 @@ extern "C" {
 
 #undef poll
 
+__diagnose_as_builtin(__builtin_pollfd, 1, 2, 3)
 _FORTIFY_FN(poll) int poll(struct pollfd * _FORTIFY_POS0 __f, nfds_t __n, int __s)
 {
         size_t __b = __bos(__f, 0);
@@ -42,6 +43,7 @@ _FORTIFY_FN(poll) int poll(struct pollfd * _FORTIFY_POS0 __f, nfds_t __n, int __
 
 #if defined(_GNU_SOURCE) && !_REDIR_TIME64
 #undef ppoll
+__diagnose_as_builtin(__builtin_ppollfd, 1, 2, 3, 4)
 _FORTIFY_FN(ppoll) int ppoll(struct pollfd * _FORTIFY_POS0 __f, nfds_t __n,
                              const struct timespec *__s, const sigset_t *__m)
 {
diff --git a/include/stdio.h b/include/stdio.h
index b31299b..1d06dae 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -42,12 +42,14 @@ extern "C" {
 #undef vsprintf
 
 __access(read_only, 2)
+__diagnose_as_builtin(__builtin_fdopen, 1, 2)
 _FORTIFY_FN(fdopen) FILE *fdopen(int __f, const char* _FORTIFY_POS0 __m)
 {
         return __orig_fdopen(__f, __m);
 }
 
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_fgets, 1, 2, 3)
 _FORTIFY_FN(fgets) char *fgets(char * _FORTIFY_POS0 __s, int __n, FILE *__f)
 {
         size_t __b = __bos(__s, 0);
@@ -58,6 +60,7 @@ _FORTIFY_FN(fgets) char *fgets(char * _FORTIFY_POS0 __s, int __n, FILE *__f)
 }
 
 __malloc(malloc (fclose, 1))
+__diagnose_as_builtin(__builtin_fmemopen, 1, 2, 3)
 _FORTIFY_FN(fmemopen) FILE *fmemopen(void* _FORTIFY_POS0 __b, size_t __s, const char* _FORTIFY_POS0 __m)
 {
         return __orig_fmemopen(__b, __s, __m);
@@ -66,12 +69,14 @@ _FORTIFY_FN(fmemopen) FILE *fmemopen(void* _FORTIFY_POS0 __b, size_t __s, const
 __access(read_only, 1)
 __access(read_only, 2)
 __malloc(malloc (fclose, 1))
+__diagnose_as_builtin(__builtin_fopen, 1, 2)
 _FORTIFY_FN(fopen) FILE *fopen(const char* _FORTIFY_POS0 __p, const char* _FORTIFY_POS0 __m)
 {
         return __orig_fopen(__p, __m);
 }
 
 __access(write_only, 1)
+__diagnose_as_builtin(__builtin_fread, 1, 2, 3, 4)
 _FORTIFY_FN(fread) size_t fread(void * _FORTIFY_POS0 __d, size_t __n,
                                 size_t __m, FILE *__f)
 {
@@ -85,6 +90,7 @@ _FORTIFY_FN(fread) size_t fread(void * _FORTIFY_POS0 __d, size_t __n,
 }
 
 __access(read_only, 1)
+__diagnose_as_builtin(__builtin_fwrite, 1, 2, 3, 4)
 _FORTIFY_FN(fwrite) size_t fwrite(const void * _FORTIFY_POS0 __d, size_t __n,
                                   size_t __m, FILE *__f)
 {
@@ -98,6 +104,7 @@ _FORTIFY_FN(fwrite) size_t fwrite(const void * _FORTIFY_POS0 __d, size_t __n,
 }
 
 __malloc(malloc (pclose, 1))
+__diagnose_as_builtin(__builtin_fwrite, 1, 2)
 _FORTIFY_FN(popen) FILE *popen(const char* _FORTIFY_POS0 __c, const char* _FORTIFY_POS0 __t)
 {
         return __orig_popen(__c, __t);
@@ -113,6 +120,7 @@ _FORTIFY_FN(tmpfile) FILE *tmpfile(void)
 #endif
 
 __access(read_write, 1, 2)
+__diagnose_as_builtin(__builtin_vsnprintf, 1, 2, 3, 4)
 _FORTIFY_FN(vsnprintf) int vsnprintf(char * _FORTIFY_POS0 __s, size_t __n,
                                      const char *__f, __builtin_va_list __v)
 {
@@ -123,6 +131,7 @@ _FORTIFY_FN(vsnprintf) int vsnprintf(char * _FORTIFY_POS0 __s, size_t __n,
         return __orig_vsnprintf(__s, __n, __f, __v);
 }
 
+__diagnose_as_builtin(__builtin_vsprintf, 1, 2, 3)
 _FORTIFY_FN(vsprintf) int vsprintf(char * _FORTIFY_POS0 __s, const char *__f,
                                    __builtin_va_list __v)
 {
diff --git a/include/stdlib.h b/include/stdlib.h
index 3f3c3ba..4efdb82 100644
--- a/include/stdlib.h
+++ b/include/stdlib.h
@@ -42,18 +42,21 @@ extern "C" {
 
 __malloc(malloc (free, 1))
 __alloc_size(1)
+__diagnose_as_builtin(__builtin_malloc, 1)
 _FORTIFY_FN(malloc) void *malloc(size_t __s)
 {
         return __orig_malloc(__s);
 }
 
 __alloc_size(2)
+__diagnose_as_builtin(__builtin_realloc, 1, 2)
 _FORTIFY_FN(realloc) void *realloc(void *__p, size_t __s)
 {
         return __orig_realloc(__p, __s);
 }
 
 __alloc_size(1, 2)
+__diagnose_as_builtin(__builtin_calloc, 1, 2)
 _FORTIFY_FN(calloc) void *calloc(size_t __n, size_t __s)
 {
         return __orig_calloc(__n, __s);
@@ -62,6 +65,7 @@ _FORTIFY_FN(calloc) void *calloc(size_t __n, size_t __s)
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #undef reallocarray
 __alloc_size (2, 3)
+__diagnose_as_builtin(__builtin_reallocarray, 1, 2, 3)
 _FORTIFY_FN(reallocarray) void* reallocarray(void* __p, size_t __n, size_t __s)
 {
         return __orig_reallocarray(__p, __n, __s);
@@ -71,6 +75,7 @@ _FORTIFY_FN(reallocarray) void* reallocarray(void* __p, size_t __n, size_t __s)
 /* FIXME clang */
 #if (defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)) && !defined(__clang__)
 #undef realpath
+__diagnose_as_builtin(__builtin_realpath, 1, 2)
 _FORTIFY_FN(realpath) char *realpath(const char *__p, char *__r)
 {
 #ifndef PATH_MAX
diff --git a/include/string.h b/include/string.h
index 4a3426a..2c11e5e 100644
--- a/include/string.h
+++ b/include/string.h
@@ -40,6 +40,7 @@ extern "C" {
 
 __access(write_only, 1, 3)
 __access(read_only, 2, 3)
+__diagnose_as_builtin(__builtin_memcpy, 1, 2, 3)
 _FORTIFY_FN(memcpy) void *memcpy(void * _FORTIFY_POS0 __od,
                                  const void * _FORTIFY_POS0 __os, size_t __n)
 {
@@ -60,6 +61,7 @@ _FORTIFY_FN(memcpy) void *memcpy(void * _FORTIFY_POS0 __od,
 
 __access(write_only, 1, 3)
 __access(read_only, 2, 3)
+__diagnose_as_builtin(__builtin_memmove, 1, 2, 3)
 _FORTIFY_FN(memmove) void *memmove(void * _FORTIFY_POS0 __d,
                                    const void * _FORTIFY_POS0 __s, size_t __n)
 {
@@ -72,6 +74,7 @@ _FORTIFY_FN(memmove) void *memmove(void * _FORTIFY_POS0 __d,
 }
 
 __access(write_only, 1, 3)
+__diagnose_as_builtin(__builtin_memset, 1, 2, 3)
 _FORTIFY_FN(memset) void *memset(void * _FORTIFY_POS0 __d, int __c, size_t __n)
 {
         size_t __b = __bos(__d, 0);
@@ -82,6 +85,7 @@ _FORTIFY_FN(memset) void *memset(void * _FORTIFY_POS0 __d, int __c, size_t __n)
 }
 
 __access(read_only, 1, 3)
+__diagnose_as_builtin(__builtin_memchr, 1, 2, 3)
 _FORTIFY_FN(memchr) void *memchr(const void * _FORTIFY_POS0 __d, int __c, size_t __n)
 {
         size_t __b = __bos(__d, 0);
@@ -92,6 +96,7 @@ _FORTIFY_FN(memchr) void *memchr(const void * _FORTIFY_POS0 __d, int __c, size_t
 }
 
 __access(read_only, 1, 2)
+__diagnose_as_builtin(__builtin_strchr, 1, 2, 3)
 _FORTIFY_FN(strchr) char *strchr(const char * _FORTIFY_POS0 __s, int __c)
 {
         size_t __b = __bos(__s, 0);
@@ -103,6 +108,7 @@ _FORTIFY_FN(strchr) char *strchr(const char * _FORTIFY_POS0 __s, int __c)
 }
 
 __access(read_only, 1, 2)
+__diagnose_as_builtin(__builtin_strrchr, 1, 2, 3)
 _FORTIFY_FN(strrchr) char *strrchr(const char * _FORTIFY_POS0 __s, int __c)
 {
         size_t __b = __bos(__s, 0);
@@ -119,6 +125,7 @@ _FORTIFY_FN(strrchr) char *strrchr(const char * _FORTIFY_POS0 __s, int __c)
 #undef stpcpy
 __access(write_only, 1)
 __access(read_only, 2)
+__diagnose_as_builtin(__builtin_stpcpy, 1, 2)
 _FORTIFY_FN(stpcpy) char *stpcpy(char * _FORTIFY_POS0 __d, const char *__s)
 {
         size_t __n = strlen(__s) + 1;
@@ -138,6 +145,7 @@ _FORTIFY_FN(stpcpy) char *stpcpy(char * _FORTIFY_POS0 __d, const char *__s)
 #undef stpncpy
 __access(write_only, 1)
 __access(read_only, 2, 3)
+__diagnose_as_builtin(__builtin_stpncpy, 1, 2, 3)
 _FORTIFY_FN(stpncpy) char *stpncpy(char * _FORTIFY_POS0 __d, const char *__s,
                                    size_t __n)
 {
@@ -156,6 +164,7 @@ _FORTIFY_FN(stpncpy) char *stpncpy(char * _FORTIFY_POS0 __d, const char *__s,
 
 __access (read_write, 1)
 __access (read_only, 2)
+__diagnose_as_builtin(__builtin_strcat, 1, 2)
 _FORTIFY_FN(strcat) char *strcat(char * _FORTIFY_POS0 __d, const char *__s)
 {
         size_t __b = __bos(__d, 0);
@@ -167,6 +176,7 @@ _FORTIFY_FN(strcat) char *strcat(char * _FORTIFY_POS0 __d, const char *__s)
 
 __access (write_only, 1)
 __access (read_only, 2)
+__diagnose_as_builtin(__builtin_strcpy, 1, 2)
 _FORTIFY_FN(strcpy) char *strcpy(char * _FORTIFY_POS0 __d, const char *__s)
 {
         size_t __n = strlen(__s) + 1;
@@ -185,6 +195,7 @@ _FORTIFY_FN(strcpy) char *strcpy(char * _FORTIFY_POS0 __d, const char *__s)
 
 __access (read_write, 1)
 __access (read_only, 2, 3)
+__diagnose_as_builtin(__builtin_strncat, 1, 2, 3)
 _FORTIFY_FN(strncat) char *strncat(char * _FORTIFY_POS0 __d, const char *__s,
                                    size_t __n)
 {
@@ -203,6 +214,7 @@ _FORTIFY_FN(strncat) char *strncat(char * _FORTIFY_POS0 __d, const char *__s,
 
 __access (write_only, 1)
 __access (read_only, 2, 3)
+__diagnose_as_builtin(__builtin_strncpy, 1, 2, 3)
 _FORTIFY_FN(strncpy) char *strncpy(char * _FORTIFY_POS0 __d,
                                    const char *__s, size_t __n)
 {
@@ -222,6 +234,7 @@ _FORTIFY_FN(strncpy) char *strncpy(char * _FORTIFY_POS0 __d,
 #undef mempcpy
 __access(write_only, 1)
 __access(read_only, 2, 3)
+__diagnose_as_builtin(__builtin_mempcpy, 1, 2, 3)
 _FORTIFY_FN(mempcpy) void *mempcpy(void * _FORTIFY_POS0 __d,
                                    const void * _FORTIFY_POS0 __s, size_t __n)
 {
@@ -239,6 +252,7 @@ _FORTIFY_FN(mempcpy) void *mempcpy(void * _FORTIFY_POS0 __d,
 #undef strlcpy
 __access (read_write, 1)
 __access (read_only, 2, 3)
+__diagnose_as_builtin(__builtin_strlcat, 1, 2, 3)
 _FORTIFY_FN(strlcat) size_t strlcat(char * _FORTIFY_POS0 __d,
                                     const char *__s, size_t __n)
 {
@@ -251,6 +265,7 @@ _FORTIFY_FN(strlcat) size_t strlcat(char * _FORTIFY_POS0 __d,
 
 __access (write_only, 1)
 __access (read_only, 2, 3)
+__diagnose_as_builtin(__builtin_strlcpy, 1, 2, 3)
 _FORTIFY_FN(strlcpy) size_t strlcpy(char * _FORTIFY_POS0 __d,
                                     const char *__s, size_t __n)
 {
diff --git a/include/strings.h b/include/strings.h
index 3b6b765..530572a 100644
--- a/include/strings.h
+++ b/include/strings.h
@@ -33,6 +33,7 @@ extern "C" {
 #undef bzero
 __access(write_only, 2, 3)
 __access(read_only, 1, 3)
+__diagnose_as_builtin(__builtin_bcopy, 1, 2, 3)
 _FORTIFY_FN(bcopy) void bcopy(const void * _FORTIFY_POS0 __s,
                               void * _FORTIFY_POS0 __d, size_t __n)
 {
@@ -45,6 +46,7 @@ _FORTIFY_FN(bcopy) void bcopy(const void * _FORTIFY_POS0 __s,
 }
 
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_bzero, 1, 2)
 _FORTIFY_FN(bzero) void bzero(void * _FORTIFY_POS0 __s, size_t __n)
 {
         size_t __b = __bos(__s, 0);
diff --git a/include/unistd.h b/include/unistd.h
index 15498b8..1c79711 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -42,6 +42,7 @@ extern "C" {
 #undef write
 
 __access(write_only, 2, 3)
+__diagnose_as_builtin(__builtin_confstr, 1, 2, 3)
 _FORTIFY_FN(confstr) size_t confstr(int __n, char * _FORTIFY_POS0 __s, size_t __l)
 {
         size_t __b = __bos(__s, 0);
@@ -53,6 +54,7 @@ _FORTIFY_FN(confstr) size_t confstr(int __n, char * _FORTIFY_POS0 __s, size_t __
 }
 
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_getcwd, 1, 2)
 _FORTIFY_FN(getcwd) char *getcwd(char * _FORTIFY_POS0 __s, size_t __l)
 {
         size_t __b = __bos(__s, 0);
@@ -65,6 +67,7 @@ _FORTIFY_FN(getcwd) char *getcwd(char * _FORTIFY_POS0 __s, size_t __l)
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
 #undef getdomainname
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_getdomainname, 1, 2)
 _FORTIFY_FN(getdomainname) int getdomainname(char * _FORTIFY_POS0 __s, size_t __l)
 {
         size_t __b = __bos(__s, 0);
@@ -75,6 +78,7 @@ _FORTIFY_FN(getdomainname) int getdomainname(char * _FORTIFY_POS0 __s, size_t __
 }
 #endif
 
+__diagnose_as_builtin(__builtin_getgroups, 1, 2)
 _FORTIFY_FN(getgroups) int getgroups(int __l, gid_t * _FORTIFY_POS0 __s)
 {
         size_t __b = __bos(__s, 0);
@@ -85,6 +89,7 @@ _FORTIFY_FN(getgroups) int getgroups(int __l, gid_t * _FORTIFY_POS0 __s)
 }
 
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_gethostname, 1, 2)
 _FORTIFY_FN(gethostname) int gethostname(char * _FORTIFY_POS0 __s, size_t __l)
 {
         size_t __b = __bos(__s, 0);
@@ -95,6 +100,7 @@ _FORTIFY_FN(gethostname) int gethostname(char * _FORTIFY_POS0 __s, size_t __l)
 }
 
 __access(write_only, 1, 2)
+__diagnose_as_builtin(__builtin_getlogin_r, 1, 2)
 _FORTIFY_FN(getlogin_r) int getlogin_r(char * _FORTIFY_POS0 __s, size_t __l)
 {
         size_t __b = __bos(__s, 0);
@@ -104,6 +110,7 @@ _FORTIFY_FN(getlogin_r) int getlogin_r(char * _FORTIFY_POS0 __s, size_t __l)
         return __orig_getlogin_r(__s, __l);
 }
 
+__diagnose_as_builtin(__builtin_pread, 1, 2, 3, 4)
 _FORTIFY_FN(pread) ssize_t pread(int __f, void * _FORTIFY_POS0 __s,
                                  size_t __n, off_t __o)
 {
@@ -115,6 +122,7 @@ _FORTIFY_FN(pread) ssize_t pread(int __f, void * _FORTIFY_POS0 __s,
 }
 
 __access(write_only, 2, 3)
+__diagnose_as_builtin(__builtin_read, 1, 2, 3)
 _FORTIFY_FN(read) ssize_t read(int __f, void * _FORTIFY_POS0 __s, size_t __n)
 {
         size_t __b = __bos(__s, 0);
@@ -125,6 +133,7 @@ _FORTIFY_FN(read) ssize_t read(int __f, void * _FORTIFY_POS0 __s, size_t __n)
 }
 
 __access(write_only, 2, 3)
+__diagnose_as_builtin(__builtin_readlink, 1, 2, 3)
 _FORTIFY_FN(readlink) ssize_t readlink(const char *__p,
                                        char * _FORTIFY_POS0 __s, size_t __n)
 {
@@ -136,6 +145,7 @@ _FORTIFY_FN(readlink) ssize_t readlink(const char *__p,
 }
 
 __access(write_only, 3, 4)
+__diagnose_as_builtin(__builtin_readlinkat, 1, 2, 3, 4)
 _FORTIFY_FN(readlinkat) ssize_t readlinkat(int __f, const char *__p,
                                            char * _FORTIFY_POS0 __s, size_t __n)
 {
@@ -147,6 +157,7 @@ _FORTIFY_FN(readlinkat) ssize_t readlinkat(int __f, const char *__p,
 }
 
 __access(write_only, 2, 3)
+__diagnose_as_builtin(__builtin_ttyname_r, 1, 2, 3)
 _FORTIFY_FN(ttyname_r) int ttyname_r(int __f, char * _FORTIFY_POS0 __s,
                                      size_t __n)
 {
@@ -158,6 +169,7 @@ _FORTIFY_FN(ttyname_r) int ttyname_r(int __f, char * _FORTIFY_POS0 __s,
 }
 
 __access(read_only, 2, 3)
+__diagnose_as_builtin(__builtin_write, 1, 2, 3)
 _FORTIFY_FN(write) ssize_t write(int __f, const void * _FORTIFY_POS0 __s,
                                  size_t __n)
 {
diff --git a/include/wchar.h b/include/wchar.h
index f047201..89ae539 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -56,6 +56,7 @@ extern "C" {
 #undef wmemmove
 #undef wmemset
 
+__diagnose_as_builtin(__builtin_fgetws, 1, 2, 3)
 _FORTIFY_FN(fgetws) wchar_t *fgetws(wchar_t * _FORTIFY_POS0 __s,
                                     int __n, FILE *__f)
 {
@@ -69,6 +70,7 @@ _FORTIFY_FN(fgetws) wchar_t *fgetws(wchar_t * _FORTIFY_POS0 __s,
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)  || defined(_BSD_SOURCE)
 #undef mbsnrtowcs
+__diagnose_as_builtin(__builtin_mbsnrtowcs, 1, 2, 3, 4, 5)
 _FORTIFY_FN(mbsnrtowcs) size_t mbsnrtowcs(wchar_t * _FORTIFY_POS0 __d,
                                           const char **__s, size_t __n,
                                           size_t __wn, mbstate_t *__st)
@@ -90,6 +92,7 @@ _FORTIFY_FN(mbsnrtowcs) size_t mbsnrtowcs(wchar_t * _FORTIFY_POS0 __d,
 }
 #endif
 
+__diagnose_as_builtin(__builtin_mbsrtowcs, 1, 2, 3, 4)
 _FORTIFY_FN(mbsrtowcs) size_t mbsrtowcs(wchar_t * _FORTIFY_POS0 __d,
                                         const char **__s, size_t __wn,
                                         mbstate_t *__st)
@@ -104,6 +107,7 @@ _FORTIFY_FN(mbsrtowcs) size_t mbsrtowcs(wchar_t * _FORTIFY_POS0 __d,
         return __r;
 }
 
+__diagnose_as_builtin(__builtin_mbstowcs, 1, 2, 3)
 _FORTIFY_FN(mbstowcs) size_t mbstowcs(wchar_t * _FORTIFY_POS0 __ws,
                                       const char *__s, size_t __wn)
 {
@@ -116,6 +120,7 @@ _FORTIFY_FN(mbstowcs) size_t mbstowcs(wchar_t * _FORTIFY_POS0 __ws,
 
 /* FIXME clang */
 #ifndef __clang__
+__diagnose_as_builtin(__builtin_wcrtomb, 1, 2, 3)
 _FORTIFY_FN(wcrtomb) size_t wcrtomb(char * __s, wchar_t __w, mbstate_t *__st)
 {
         if (__s && MB_LEN_MAX > __bos(__s, 2)) {
@@ -134,6 +139,7 @@ _FORTIFY_FN(wcrtomb) size_t wcrtomb(char * __s, wchar_t __w, mbstate_t *__st)
 }
 #endif
 
+__diagnose_as_builtin(__builtin_wcscat, 1, 2)
 _FORTIFY_FN(wcscat) wchar_t *wcscat(wchar_t * _FORTIFY_POS0 __d,
                                     const wchar_t *__s)
 {
@@ -144,6 +150,7 @@ _FORTIFY_FN(wcscat) wchar_t *wcscat(wchar_t * _FORTIFY_POS0 __d,
         return __orig_wcscat(__d, __s);
 }
 
+__diagnose_as_builtin(__builtin_wcscpy, 1, 2)
 _FORTIFY_FN(wcscpy) wchar_t *wcscpy(wchar_t * _FORTIFY_POS0 __d,
                                     const wchar_t *__s)
 {
@@ -154,6 +161,7 @@ _FORTIFY_FN(wcscpy) wchar_t *wcscpy(wchar_t * _FORTIFY_POS0 __d,
         return __orig_wcscpy(__d, __s);
 }
 
+__diagnose_as_builtin(__builtin_wcsncat, 1, 2, 3)
 _FORTIFY_FN(wcsncat) wchar_t *wcsncat(wchar_t * _FORTIFY_POS0 __d,
                                       const wchar_t *__s, size_t __n)
 {
@@ -171,6 +179,7 @@ _FORTIFY_FN(wcsncat) wchar_t *wcsncat(wchar_t * _FORTIFY_POS0 __d,
         return __orig_wcsncat(__d, __s, __n);
 }
 
+__diagnose_as_builtin(__builtin_wcsncpy, 1, 2, 3)
 _FORTIFY_FN(wcsncpy) wchar_t *wcsncpy(wchar_t * _FORTIFY_POS0 __d,
                                       const wchar_t *__s, size_t __n)
 {
@@ -184,6 +193,7 @@ _FORTIFY_FN(wcsncpy) wchar_t *wcsncpy(wchar_t * _FORTIFY_POS0 __d,
 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
  || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)  || defined(_BSD_SOURCE)
 #undef wcsnrtombs
+__diagnose_as_builtin(__builtin_wcsntombs, 1, 2, 3, 4, 5)
 _FORTIFY_FN(wcsnrtombs) size_t wcsnrtombs(char * _FORTIFY_POS0 __d,
                                           const wchar_t **__s, size_t __wn,
                                           size_t __n, mbstate_t *__st)
@@ -205,6 +215,7 @@ _FORTIFY_FN(wcsnrtombs) size_t wcsnrtombs(char * _FORTIFY_POS0 __d,
 }
 #endif
 
+__diagnose_as_builtin(__builtin_wcsrtombs, 1, 2, 3, 4)
 _FORTIFY_FN(wcsrtombs) size_t wcsrtombs(char * _FORTIFY_POS0 __d,
                                         const wchar_t **__s, size_t __n,
                                         mbstate_t *__st)
@@ -219,6 +230,7 @@ _FORTIFY_FN(wcsrtombs) size_t wcsrtombs(char * _FORTIFY_POS0 __d,
 }
 
 __access(write_only, 2, 3)
+__diagnose_as_builtin(__builtin_wcstombs, 1, 2, 3)
 _FORTIFY_FN(wcstombs) size_t wcstombs(char * _FORTIFY_POS0 __s,
                                       const wchar_t *__ws, size_t __n)
 {
@@ -229,6 +241,7 @@ _FORTIFY_FN(wcstombs) size_t wcstombs(char * _FORTIFY_POS0 __s,
         return __orig_wcstombs(__s, __ws, __n);
 }
 
+__diagnose_as_builtin(__builtin_wctomb, 1, 2)
 _FORTIFY_FN(wctomb) int wctomb(char * _FORTIFY_POS0 __s, wchar_t __w)
 {
         size_t __b = __bos(__s, 0);
@@ -238,6 +251,7 @@ _FORTIFY_FN(wctomb) int wctomb(char * _FORTIFY_POS0 __s, wchar_t __w)
         return __orig_wctomb(__s, __w);
 }
 
+__diagnose_as_builtin(__builtin_wmemcpy, 1, 2, 3)
 _FORTIFY_FN(wmemcpy) wchar_t *wmemcpy(wchar_t * _FORTIFY_POS0 __d,
                                       const wchar_t *__s, size_t __n)
 {
@@ -248,6 +262,7 @@ _FORTIFY_FN(wmemcpy) wchar_t *wmemcpy(wchar_t * _FORTIFY_POS0 __d,
         return __orig_wmemcpy(__d, __s, __n);
 }
 
+__diagnose_as_builtin(__builtin_wmemmove, 1, 2, 3)
 _FORTIFY_FN(wmemmove) wchar_t *wmemmove(wchar_t * _FORTIFY_POS0 __d,
                                         const wchar_t *__s, size_t __n)
 {
@@ -258,6 +273,7 @@ _FORTIFY_FN(wmemmove) wchar_t *wmemmove(wchar_t * _FORTIFY_POS0 __d,
         return __orig_wmemmove(__d, __s, __n);
 }
 
+__diagnose_as_builtin(__builtin_wmemset, 1, 2, 3)
 _FORTIFY_FN(wmemset) wchar_t *wmemset(wchar_t * _FORTIFY_POS0 __s,
                                       wchar_t __c, size_t __n)
 {