[newlib-cygwin] Optional struct _reent::_new::_reent::_unused_rand

[newlib-cygwin] Optional struct _reent::_new::_reent::_unused_rand

[Sebastian Huber]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=84d8b9d1b3132f0db0f966d2285b2905e815f2d4

commit 84d8b9d1b3132f0db0f966d2285b2905e815f2d4
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date:   Fri May 13 15:21:34 2022 +0200

    Optional struct _reent::_new::_reent::_unused_rand
    
    Rename struct _reent member _unused_rand to _reserved_2.  Provide it only if
    _REENT_BACKWARD_BINARY_COMPAT is defined.

Diff:
---
 newlib/libc/include/sys/reent.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/newlib/libc/include/sys/reent.h b/newlib/libc/include/sys/reent.h
index f526f3568..6d6796ed3 100644
--- a/newlib/libc/include/sys/reent.h
+++ b/newlib/libc/include/sys/reent.h
@@ -345,9 +345,11 @@ struct _rand48 {
 #ifdef _REENT_BACKWARD_BINARY_COMPAT
 #define _REENT_INIT_RESERVED_0 0,
 #define _REENT_INIT_RESERVED_1 0,
+#define _REENT_INIT_RESERVED_2 0,
 #else
 #define _REENT_INIT_RESERVED_0 /* Nothing to initialize */
 #define _REENT_INIT_RESERVED_1 /* Nothing to initialize */
+#define _REENT_INIT_RESERVED_2 /* Nothing to initialize */
 #endif
 
 /*
@@ -661,7 +663,9 @@ struct _reent
     {
       struct
         {
-          unsigned int _unused_rand;
+#ifdef _REENT_BACKWARD_BINARY_COMPAT
+          unsigned int _reserved_2;
+#endif
           char * _strtok_last;
           char _asctime_buf[_REENT_ASCTIME_SIZE];
           struct __tm _localtime_buf;
@@ -741,7 +745,7 @@ struct _reent
     _NULL, \
     { \
       { \
-        0, \
+        _REENT_INIT_RESERVED_2 \
         _NULL, \
         "", \
         {0, 0, 0, 0, 0, 0, 0, 0, 0}, \