[glibc/azanella/clang] ctype: Remove internal lower/toupper alias

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8c66fed53c0f9837d94ef9c5f2f2ea34ccc05a71

commit 8c66fed53c0f9837d94ef9c5f2f2ea34ccc05a71
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Mar 14 10:51:23 2022 -0300

    ctype: Remove internal lower/toupper alias

Diff:
---
 ctype/ctype.c   | 8 ++++----
 include/ctype.h | 3 ---
 2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/ctype/ctype.c b/ctype/ctype.c
index 423c0a5186..81385e0e8e 100644
--- a/ctype/ctype.c
+++ b/ctype/ctype.c
@@ -41,15 +41,15 @@ func (isxdigit, _ISxdigit)
   ((int32_t *) _NL_CURRENT (LC_CTYPE, _NL_CTYPE_TOUPPER) + 128)
 
 int
-tolower (int c)
+__tolower (int c)
 {
   return c >= -128 && c < 256 ? __ctype_tolower[c] : c;
 }
-libc_hidden_def (tolower)
+weak_alias (__tolower, tolower)
 
 int
-toupper (int c)
+__toupper (int c)
 {
   return c >= -128 && c < 256 ? __ctype_toupper[c] : c;
 }
-libc_hidden_def (toupper)
+weak_alias (__toupper, toupper)
diff --git a/include/ctype.h b/include/ctype.h
index 493a6f80ce..ac6db790b7 100644
--- a/include/ctype.h
+++ b/include/ctype.h
@@ -11,9 +11,6 @@ libc_hidden_proto (__ctype_init)
    So defeat macro expansion with parens for this declaration.  */
 extern int (__isctype) (int __c, int __mask);
 
-libc_hidden_proto (tolower)
-libc_hidden_proto (toupper)
-
 # if IS_IN (libc)
 
 /* These accessors are used by the optimized macros to find the