Don't use _POSIX_SOURCE in header.

diff --git a/libio/stdio.h b/libio/stdio.h
index 02d07688b51d600ad0b529b8a9f0e6ab1fc63641..cb254f618efcc7e545027dd9a8603639b2cff5fd 100644 (file)
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -176,7 +176,7 @@ extern int obstack_printf __P ((struct obstack *__obstack, __const char *__fmt,
                                ...));
 #endif
 
-#if !defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)
+#if !defined(__STRICT_ANSI__) || defined(__USE_POSIX)
 extern FILE *fdopen __P ((int, __const char *));
 extern int fileno __P ((FILE*));
 extern FILE* popen __P ((__const char*, __const char*));