[glibc/maskray/clang] not-cancel.h: Move hidden_proto before first use

[Fangrui Song <maskray@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=80e02ffea4ed378f3d698053f01869e927353f4a

commit 80e02ffea4ed378f3d698053f01869e927353f4a
Author: Fangrui Song <maskray@google.com>
Date:   Sun Aug 22 22:36:44 2021 -0700

    not-cancel.h: Move hidden_proto before first use
    
    This fixes `error: cannot apply asm label to function after its first use`
    for Clang.

Diff:
---
 sysdeps/unix/sysv/linux/not-cancel.h | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h
index 82798df4b4..7d34d3b66b 100644
--- a/sysdeps/unix/sysv/linux/not-cancel.h
+++ b/sysdeps/unix/sysv/linux/not-cancel.h
@@ -51,6 +51,21 @@ __typeof (__write) __write_nocancel;
 /* Uncancelable close.  */
 __typeof (__close) __close_nocancel;
 
+/* Uncancelable fcntl.  */
+__typeof (__fcntl) __fcntl64_nocancel;
+
+#if IS_IN (libc) || IS_IN (rtld)
+hidden_proto (__open_nocancel)
+hidden_proto (__open64_nocancel)
+hidden_proto (__openat_nocancel)
+hidden_proto (__openat64_nocancel)
+hidden_proto (__read_nocancel)
+hidden_proto (__pread64_nocancel)
+hidden_proto (__write_nocancel)
+hidden_proto (__close_nocancel)
+hidden_proto (__fcntl64_nocancel)
+#endif
+
 /* Non cancellable close syscall that does not also set errno in case of
    failure.  */
 static inline void
@@ -67,19 +82,4 @@ __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt)
   INTERNAL_SYSCALL_CALL (writev, fd, iov, iovcnt);
 }
 
-/* Uncancelable fcntl.  */
-__typeof (__fcntl) __fcntl64_nocancel;
-
-#if IS_IN (libc) || IS_IN (rtld)
-hidden_proto (__open_nocancel)
-hidden_proto (__open64_nocancel)
-hidden_proto (__openat_nocancel)
-hidden_proto (__openat64_nocancel)
-hidden_proto (__read_nocancel)
-hidden_proto (__pread64_nocancel)
-hidden_proto (__write_nocancel)
-hidden_proto (__close_nocancel)
-hidden_proto (__fcntl64_nocancel)
-#endif
-
 #endif /* NOT_CANCEL_H  */