Fix flockfile(3) and friends for stdin/stdout/stderr too.
stdin/stdout/stderr are special; their mutexes are initialized by
__sinit. There's no unit test for this, because __sinit has already
been called by the time the first unit test runs, but you could
reproduce this failure with a trivial main() that calls flockfile
or ftrylockfile on one of the standard streams before otherwise
using stdio.
Bug: 18208568
Change-Id: I28d232cf05a9f198a2bed61854d8047b23d2091d
diff --git a/libc/stdio/wcio.h b/libc/stdio/wcio.h
index 584a3f2..2c1fa3c 100644
--- a/libc/stdio/wcio.h
+++ b/libc/stdio/wcio.h
@@ -32,6 +32,10 @@
#ifndef _WCIO_H_
#define _WCIO_H_
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
/* minimal requirement of SUSv2 */
#define WCIO_UNGETWC_BUFSIZE 1
@@ -78,4 +82,6 @@
#define WCIO_INIT(fp) \
memset(&(_EXT(fp)->_wcio), 0, sizeof(struct wchar_io_data))
+__END_DECLS
+
#endif /*_WCIO_H_*/