Apply asm redirections in wchar.h before first use

Similar to d0fa09a770, but for wchar.h.  Fixes [BZ #27087] by applying
all long double related asm redirections before using functions in
bits/wchar2.h.
Moves the function declarations from wcsmbs/bits/wchar2.h to a new file
wcsmbs/bits/wchar2-decl.h that will be included first in wcsmbs/wchar.h.

Tested with build-many-glibcs.py.
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 124 insertions, 0 deletions

diff --git a/wcsmbs/bits/wchar2-decl.h b/wcsmbs/bits/wchar2-decl.h
new file mode 100644
index 0000000000..8e1735c33b
--- /dev/null
+++ b/wcsmbs/bits/wchar2-decl.h
@@ -0,0 +1,124 @@
+/* Checking macros for wchar functions.  Declarations only.
+   Copyright (C) 2004-2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _BITS_WCHAR2_DECL_H
+#define _BITS_WCHAR2_DECL_H 1
+
+#ifndef _WCHAR_H
+# error "Never include <bits/wchar2-decl.h> directly; use <wchar.h> instead."
+#endif
+
+
+extern wchar_t *__wmemcpy_chk (wchar_t *__restrict __s1,
+			       const wchar_t *__restrict __s2, size_t __n,
+			       size_t __ns1) __THROW;
+extern wchar_t *__wmemmove_chk (wchar_t *__s1, const wchar_t *__s2,
+				size_t __n, size_t __ns1) __THROW;
+
+
+#ifdef __USE_GNU
+
+extern wchar_t *__wmempcpy_chk (wchar_t *__restrict __s1,
+				const wchar_t *__restrict __s2, size_t __n,
+				size_t __ns1) __THROW;
+
+#endif
+
+
+extern wchar_t *__wmemset_chk (wchar_t *__s, wchar_t __c, size_t __n,
+			       size_t __ns) __THROW;
+extern wchar_t *__wcscpy_chk (wchar_t *__restrict __dest,
+			      const wchar_t *__restrict __src,
+			      size_t __n) __THROW;
+extern wchar_t *__wcpcpy_chk (wchar_t *__restrict __dest,
+			      const wchar_t *__restrict __src,
+			      size_t __destlen) __THROW;
+extern wchar_t *__wcsncpy_chk (wchar_t *__restrict __dest,
+			       const wchar_t *__restrict __src, size_t __n,
+			       size_t __destlen) __THROW;
+extern wchar_t *__wcpncpy_chk (wchar_t *__restrict __dest,
+			       const wchar_t *__restrict __src, size_t __n,
+			       size_t __destlen) __THROW;
+extern wchar_t *__wcscat_chk (wchar_t *__restrict __dest,
+			      const wchar_t *__restrict __src,
+			      size_t __destlen) __THROW;
+extern wchar_t *__wcsncat_chk (wchar_t *__restrict __dest,
+			       const wchar_t *__restrict __src,
+			       size_t __n, size_t __destlen) __THROW;
+extern int __swprintf_chk (wchar_t *__restrict __s, size_t __n,
+			   int __flag, size_t __s_len,
+			   const wchar_t *__restrict __format, ...)
+     __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 6))) */;
+extern int __vswprintf_chk (wchar_t *__restrict __s, size_t __n,
+			    int __flag, size_t __s_len,
+			    const wchar_t *__restrict __format,
+			    __gnuc_va_list __arg)
+     __THROW /* __attribute__ ((__format__ (__wprintf__, 5, 0))) */;
+
+#if __USE_FORTIFY_LEVEL > 1
+
+extern int __fwprintf_chk (__FILE *__restrict __stream, int __flag,
+			   const wchar_t *__restrict __format, ...);
+extern int __wprintf_chk (int __flag, const wchar_t *__restrict __format,
+			  ...);
+extern int __vfwprintf_chk (__FILE *__restrict __stream, int __flag,
+			    const wchar_t *__restrict __format,
+			    __gnuc_va_list __ap);
+extern int __vwprintf_chk (int __flag, const wchar_t *__restrict __format,
+			   __gnuc_va_list __ap);
+
+#endif
+
+extern wchar_t *__fgetws_chk (wchar_t *__restrict __s, size_t __size, int __n,
+			      __FILE *__restrict __stream) __wur;
+
+#ifdef __USE_GNU
+
+extern wchar_t *__fgetws_unlocked_chk (wchar_t *__restrict __s, size_t __size,
+				       int __n, __FILE *__restrict __stream)
+       __wur;
+
+#endif
+
+extern size_t __wcrtomb_chk (char *__restrict __s, wchar_t __wchar,
+			     mbstate_t *__restrict __p,
+			     size_t __buflen) __THROW __wur;
+extern size_t __mbsrtowcs_chk (wchar_t *__restrict __dst,
+			       const char **__restrict __src,
+			       size_t __len, mbstate_t *__restrict __ps,
+			       size_t __dstlen) __THROW;
+extern size_t __wcsrtombs_chk (char *__restrict __dst,
+			       const wchar_t **__restrict __src,
+			       size_t __len, mbstate_t *__restrict __ps,
+			       size_t __dstlen) __THROW;
+
+#ifdef	__USE_XOPEN2K8
+
+extern size_t __mbsnrtowcs_chk (wchar_t *__restrict __dst,
+				const char **__restrict __src, size_t __nmc,
+				size_t __len, mbstate_t *__restrict __ps,
+				size_t __dstlen) __THROW;
+extern size_t __wcsnrtombs_chk (char *__restrict __dst,
+				const wchar_t **__restrict __src,
+				size_t __nwc, size_t __len,
+				mbstate_t *__restrict __ps, size_t __dstlen)
+       __THROW;
+
+#endif
+
+#endif /* bits/wchar2-decl.h.  */