5 files changed, 37 insertions, 0 deletions
diff --git a/include/bits/stdio2-decl.h b/include/bits/stdio2-decl.h
index bbb052f192..9758bf4b55 100644
--- a/include/bits/stdio2-decl.h
+++ b/include/bits/stdio2-decl.h
@@ -1 +1,8 @@
 #include <libio/bits/stdio2-decl.h>
+
+#ifndef _ISOMAC
+libc_hidden_proto (__fgets_unlocked_chk)
+libc_hidden_ldbl_proto (vfprintf)
+libc_hidden_ldbl_proto (__vasprintf_chk)
+libc_hidden_ldbl_proto (__vfprintf_chk)
+#endif
diff --git a/include/bits/string_fortified.h b/include/bits/string_fortified.h
index 88bf073c9c..0cf0e76db1 100644
--- a/include/bits/string_fortified.h
+++ b/include/bits/string_fortified.h
@@ -1 +1,16 @@
+#ifndef _ISOMAC
+# if IS_IN(libc) && defined SHARED
+/* Redirect calls from __builtin_stpcpy_chk to internal __stpcpy when building
+   with fortify enable.  */
+__asm__ ("stpcpy = __GI___stpcpy");
+# endif
+
+/* Add the internal aliass attribute to symbol before they first usage on the
+   fortify wrappers.  */
+libc_hidden_builtin_proto (memcpy)
+libc_hidden_builtin_proto (mempcpy)
+libc_hidden_builtin_proto (memmove)
+libc_hidden_builtin_proto (memset)
+#endif
+
 #include <string/bits/string_fortified.h>
diff --git a/include/bits/syslog-decl.h b/include/bits/syslog-decl.h
index 491a263777..762b289184 100644
--- a/include/bits/syslog-decl.h
+++ b/include/bits/syslog-decl.h
@@ -1 +1,5 @@
 #include <misc/bits/syslog-decl.h>
+
+#ifndef _ISOMAC
+libc_hidden_ldbl_proto (__vsyslog_chk)
+#endif
diff --git a/include/bits/unistd-decl.h b/include/bits/unistd-decl.h
index 7fcbd272ac..dd6af7e4c8 100644
--- a/include/bits/unistd-decl.h
+++ b/include/bits/unistd-decl.h
@@ -1 +1,7 @@
 #include <posix/bits/unistd-decl.h>
+
+#ifndef _ISOMAC
+libc_hidden_proto (__read_chk)
+libc_hidden_proto (__getdomainname_chk)
+libc_hidden_proto (__getlogin_r_chk)
+#endif
diff --git a/include/bits/wchar2-decl.h b/include/bits/wchar2-decl.h
index 00b1b93342..f3b8a8cf87 100644
--- a/include/bits/wchar2-decl.h
+++ b/include/bits/wchar2-decl.h
@@ -1 +1,6 @@
 #include <wcsmbs/bits/wchar2-decl.h>
+
+#ifndef _ISOMAC
+libc_hidden_builtin_proto (__wmemset_chk)
+libc_hidden_proto (__wcrtomb_chk)
+#endif