[newlib-cygwin] Use !__HAVE_LOCALE_INFO__ define to use _ctype_ directly [v2]

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=77f8a6dfab98d8afd662c34ea832579f0565b40c

commit 77f8a6dfab98d8afd662c34ea832579f0565b40c
Author: Keith Packard <keithp@keithp.com>
Date:   Wed Sep 5 21:39:40 2018 -0700

    Use !__HAVE_LOCALE_INFO__ define to use _ctype_ directly [v2]
    
    When __HAVE_LOCALE_INFO__ is not selected, directly access the
    existing _ctype_ variable from __locale_ctype_ptr() and
    __locale_ctype_ptr_l(), eliminating the need for any locale or reent
    structure
    
    Signed-off-by: Keith Packard <keithp@keithp.com>
    
    v2:
    	locale: fix conflict with __locale_ctype_ptr macro
    
    	If we are building without __HAVE_LOCALE_INFO__, there is a
    	macro providing __locale_ctype_ptr which in turn fouls up this
    	declaration.
    
    	Signed-off-by: Michael Lyle <mlyle@lyle.org>

Diff:
---
 newlib/libc/include/ctype.h    | 9 +++++++++
 newlib/libc/locale/locale.c    | 2 ++
 newlib/libc/locale/setlocale.h | 8 ++++++++
 3 files changed, 19 insertions(+)

diff --git a/newlib/libc/include/ctype.h b/newlib/libc/include/ctype.h
index f74b349..1cee695 100644
--- a/newlib/libc/include/ctype.h
+++ b/newlib/libc/include/ctype.h
@@ -66,7 +66,12 @@ extern int toascii_l (int __c, locale_t __l);
 #define _X	0100
 #define	_B	0200
 
+#ifdef __HAVE_LOCALE_INFO__
 const char *__locale_ctype_ptr (void);
+#else
+#define __locale_ctype_ptr()	_ctype_
+#endif
+
 # define __CTYPE_PTR	(__locale_ctype_ptr ())
 
 #ifndef __cplusplus
@@ -100,7 +105,11 @@ const char *__locale_ctype_ptr (void);
 #endif
 
 #if __POSIX_VISIBLE >= 200809
+#ifdef __HAVE_LOCALE_INFO__
 const char *__locale_ctype_ptr_l (locale_t);
+#else
+#define __locale_ctype_ptr_l(l)	_ctype_
+#endif
 #define __ctype_lookup_l(__c,__l) ((__locale_ctype_ptr_l(__l)+sizeof(""[__c]))[(int)(__c)])
 
 #define	isalpha_l(__c,__l)	(__ctype_lookup_l(__c,__l)&(_U|_L))
diff --git a/newlib/libc/locale/locale.c b/newlib/libc/locale/locale.c
index 557982d..791a775 100644
--- a/newlib/libc/locale/locale.c
+++ b/newlib/libc/locale/locale.c
@@ -981,6 +981,7 @@ __locale_mb_cur_max (void)
 #endif
 }
 
+#ifdef __HAVE_LOCALE_INFO__
 const char *
 __locale_ctype_ptr_l (struct __locale_t *locale)
 {
@@ -992,6 +993,7 @@ __locale_ctype_ptr (void)
 {
   return __get_current_locale ()->ctype_ptr;
 }
+#endif /* __HAVE_LOCALE_INFO__ */
 
 #ifndef _REENT_ONLY
 
diff --git a/newlib/libc/locale/setlocale.h b/newlib/libc/locale/setlocale.h
index 85a38d5..25c27cf 100644
--- a/newlib/libc/locale/setlocale.h
+++ b/newlib/libc/locale/setlocale.h
@@ -217,7 +217,11 @@ __get_global_locale ()
 _ELIDABLE_INLINE struct __locale_t *
 __get_locale_r (struct _reent *r)
 {
+#ifdef __HAVE_LOCALE_INFO__
   return r->_locale;
+#else
+  return __get_global_locale();
+#endif
 }
 
 /* In POSIX terms the current locale is the locale used by all functions
@@ -227,7 +231,11 @@ __get_locale_r (struct _reent *r)
 _ELIDABLE_INLINE struct __locale_t *
 __get_current_locale (void)
 {
+#ifdef __HAVE_LOCALE_INFO__
   return _REENT->_locale ?: __get_global_locale ();
+#else
+  return __get_global_locale();
+#endif
 }
 
 /* Only access fixed "C" locale using this function.  Fake for !_MB_CAPABLE