bug#53509: Compilation failure of 27.2 on ppc64le

[Scott Talbert <swt@techie.net>]

Hi,

On Fedora, we're seeing a compile error when compiling 27.2 on ppc64le 
architecture.  Log excerpt below, full log at [1]:

   CC       regex.o
In file included from /usr/include/stdio.h:899,
                  from ./stdio.h:43,
                  from ../../lib/regex_internal.h:24,
                  from ../../lib/regex.c:68:
/usr/include/bits/stdio-ldbl.h: In function '__LDBL_REDIR1_DECL':
/usr/include/bits/stdio-ldbl.h:36:1: error: expected declaration 
specifiers before '__LDBL_REDIR1_DECL'
    36 | __LDBL_REDIR1_DECL (scanf, __isoc99_scanfieee128)
       | ^~~~~~~~~~~~~~~~~~
In file included from /usr/include/features.h:488,
                  from /usr/include/errno.h:25,
                  from ../../lib/libc-config.h:39,
                  from ../../lib/regex.c:21:
/usr/include/bits/stdio-ldbl.h:86:1: error: storage class specified for 
parameter '__sprintf_chk'
    86 | __LDBL_REDIR2_DECL (sprintf_chk)
       | ^~~~~~~~~~~~~~~~~~
/usr/include/bits/stdio-ldbl.h:87:1: error: storage class specified for 
parameter '__vsprintf_chk'
    87 | __LDBL_REDIR2_DECL (vsprintf_chk)
       | ^~~~~~~~~~~~~~~~~~
/usr/include/bits/stdio-ldbl.h:89:1: error: storage class specified for 
parameter '__snprintf_chk'
    89 | __LDBL_REDIR2_DECL (snprintf_chk)
       | ^~~~~~~~~~~~~~~~~~
/usr/include/bits/stdio-ldbl.h:90:1: error: storage class specified for 
parameter '__vsnprintf_chk'
    90 | __LDBL_REDIR2_DECL (vsnprintf_chk)
       | ^~~~~~~~~~~~~~~~~~

Possibly related to 128-bit long double?  gnulib out of sync with glibc?

[1] https://kojipkgs.fedoraproject.org//work/tasks/1829/81671829/build.log

Thanks,
Scott