[libcxx] [test] Fix the locale.time.put.byname/put1 testcase on Linux and Windows

[mstorsjo]

Summary

The Windows and Glibc abbreviated forms of Saturday in French locale
is "sam." with a trailing period included. Account for this in the
test reference.

[ldionne]

libcxx/test/std/localization/locale.categories/category.time/locale.time.put.byname/put1.pass.cpp

72–80

[mstorsjo]

Applied suggestion.

libcxx/test/std/localization/locale.categories/category.time/locale.time.put.byname/put1.pass.cpp

 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
 // NetBSD does not support LC_TIME at the moment
 // XFAIL: netbsd
 
-// XFAIL: LIBCXX-WINDOWS-FIXME
 // XFAIL: LIBCXX-AIX-FIXME
 
 // REQUIRES: locale.en_US.UTF-8
 // REQUIRES: locale.fr_FR.UTF-8
 
 // <locale>
 
 // template <class CharT, class OutputIterator = ostreambuf_iterator<CharT> >
 // class time_put_byname
 //     : public time_put<CharT, OutputIterator>
 // {
 // public:
 //     explicit time_put_byname(const char* nm, size_t refs = 0);
 //     explicit time_put_byname(const string& nm, size_t refs = 0);
 //
 // protected:
 //     ~time_put_byname();
 // };
 
-// TODO: investigation needed
-// XFAIL: target={{.*}}-linux-gnu{{.*}}
-
 #include <locale>
 #include <cassert>
 #include "test_macros.h"
 #include "test_iterators.h"
 
 #include "platform_support.h" // locale name macros
 
 typedef std::time_put_byname<char, output_iterator<char*> > F;
std::ios ios(0);
         const my_facet f(LOCALE_en_US_UTF_8, 1);
         std::string pat("Today is %A which is abbreviated %a.");
         iter = f.put(output_iterator<char*>(str), ios, '*', &t,
                      pat.data(), pat.data() + pat.size());
         std::string ex(str, iter.base());
         assert(ex == "Today is Saturday which is abbreviated Sat.");
     }
     {
         const my_facet f(LOCALE_fr_FR_UTF_8, 1);
-        std::string pat("Today is %A which is abbreviated %a.");
+        std::string pat("Today is %A which is abbreviated '%a'.");
         iter = f.put(output_iterator<char*>(str), ios, '*', &t,
                      pat.data(), pat.data() + pat.size());
         std::string ex(str, iter.base());
-        assert((ex == "Today is Samedi which is abbreviated Sam.")||
-               (ex == "Today is samedi which is abbreviated sam." ));
+        assert((ex == "Today is Samedi which is abbreviated 'Sam'.")||
+               (ex == "Today is samedi which is abbreviated 'sam'." )||
+               (ex == "Today is samedi which is abbreviated 'sam.'."));
     }
 
   return 0;
 }