[newlib-cygwin/main] Cygwin: fcntl.h: Use cdefs.h macros

[newlib-cygwin/main] Cygwin: fcntl.h: Use cdefs.h macros

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=23e9b5cf3c4ff4507eff8fb9fcf8d5cb15afc694

commit 23e9b5cf3c4ff4507eff8fb9fcf8d5cb15afc694
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Sun Nov 26 15:41:41 2023 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Tue Nov 28 10:52:05 2023 +0100

    Cygwin: fcntl.h: Use cdefs.h macros
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/include/fcntl.h | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/winsup/cygwin/include/fcntl.h b/winsup/cygwin/include/fcntl.h
index de64d4f7c010..1ef51e50c575 100644
--- a/winsup/cygwin/include/fcntl.h
+++ b/winsup/cygwin/include/fcntl.h
@@ -9,7 +9,9 @@ details. */
 #ifndef _FCNTL_H
 #define _FCNTL_H
 
+#include <sys/cdefs.h>
 #include <sys/fcntl.h>
+
 #define O_NDELAY	_FNDELAY
 
 /* F_LCK_MANDATORY: Request mandatory locks for this file descriptor.
@@ -42,14 +44,11 @@ details. */
 
 #define __FALLOC_FL_TRUNCATE		0x0001	/* internal */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+__BEGIN_DECLS
 
 extern int posix_fadvise (int, off_t, off_t, int);
 extern int posix_fallocate (int, off_t, off_t);
-#ifdef __cplusplus
-}
-#endif
+
+__END_DECLS
 
 #endif /* _FCNTL_H */