[newlib-cygwin] Fix bug introduced in previous patch (44b60f0c)

[newlib-cygwin] Fix bug introduced in previous patch (44b60f0c)

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=a160ee29e532e596c90e93fbe7b390d3970e21ef

commit a160ee29e532e596c90e93fbe7b390d3970e21ef
Author: Matt Joyce <matthew.joyce@embedded-brains.de>
Date:   Thu Mar 31 16:34:54 2022 +0200

    Fix bug introduced in previous patch (44b60f0c)
    
    This fixes a bug introduced in a previous patch (Commit 44b60f0c:
    Make __sdidinit unused). Removed intitialization of __cleanup from
    __smakebuf_r(). All callers of __smakebuf_r() call __sinit()
    through the_CHECK_INIT macro, thus __cleanup is already
    initialized. This fix also allows _cleanup_r() to be made static.
    Changed its name to cleanup_stdio() and removed its declaration
    from local.h.

Diff:
---
 newlib/libc/stdio/fflush.c  | 2 +-
 newlib/libc/stdio/findfp.c  | 8 ++++----
 newlib/libc/stdio/local.h   | 1 -
 newlib/libc/stdio/makebuf.c | 1 -
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/newlib/libc/stdio/fflush.c b/newlib/libc/stdio/fflush.c
index f2d0d9bbb..2b5f13bff 100644
--- a/newlib/libc/stdio/fflush.c
+++ b/newlib/libc/stdio/fflush.c
@@ -234,7 +234,7 @@ __sflush_r (struct _reent *ptr,
 }
 
 #ifdef _STDIO_BSD_SEMANTICS
-/* Called from _cleanup_r.  At exit time, we don't need file locking,
+/* Called from cleanup_stdio().  At exit time, we don't need file locking,
    and we don't want to move the underlying file pointer unless we're
    writing. */
 int
diff --git a/newlib/libc/stdio/findfp.c b/newlib/libc/stdio/findfp.c
index eca47bd92..aa5e366d8 100644
--- a/newlib/libc/stdio/findfp.c
+++ b/newlib/libc/stdio/findfp.c
@@ -199,8 +199,8 @@ found:
  * The name `_cleanup' is, alas, fairly well known outside stdio.
  */
 
-void
-_cleanup_r (struct _reent *ptr)
+static void
+cleanup_stdio (struct _reent *ptr)
 {
   int (*cleanup_func) (struct _reent *, FILE *);
 #ifdef _STDIO_BSD_SEMANTICS
@@ -232,7 +232,7 @@ _cleanup_r (struct _reent *ptr)
 void
 _cleanup (void)
 {
-  _cleanup_r (_GLOBAL_REENT);
+  cleanup_stdio (_GLOBAL_REENT);
 }
 #endif
 
@@ -252,7 +252,7 @@ __sinit (struct _reent *s)
     }
 
   /* make sure we clean up on exit */
-  s->__cleanup = _cleanup_r;	/* conservative */
+  s->__cleanup = cleanup_stdio;	/* conservative */
 
   s->__sglue._next = NULL;
 #ifndef _REENT_SMALL
diff --git a/newlib/libc/stdio/local.h b/newlib/libc/stdio/local.h
index 86422eb11..50818db0e 100644
--- a/newlib/libc/stdio/local.h
+++ b/newlib/libc/stdio/local.h
@@ -180,7 +180,6 @@ extern _fpos_t __sseek (struct _reent *, void *, _fpos_t, int);
 extern int    __sclose (struct _reent *, void *);
 extern int    __stextmode (int);
 extern void   __sinit (struct _reent *);
-extern void   _cleanup_r (struct _reent *);
 extern void   __smakebuf_r (struct _reent *, FILE *);
 extern int    __swhatbuf_r (struct _reent *, FILE *, size_t *, int *);
 extern int    _fwalk_reent (struct _reent *, int (*)(struct _reent *, FILE *));
diff --git a/newlib/libc/stdio/makebuf.c b/newlib/libc/stdio/makebuf.c
index 0030812c1..b9c75bbf8 100644
--- a/newlib/libc/stdio/makebuf.c
+++ b/newlib/libc/stdio/makebuf.c
@@ -61,7 +61,6 @@ __smakebuf_r (struct _reent *ptr,
     }
   else
     {
-      ptr->__cleanup = _cleanup_r;
       fp->_flags |= __SMBF;
       fp->_bf._base = fp->_p = (unsigned char *) p;
       fp->_bf._size = size;