[cfe-dev] libcxx: Disabling locale-related libc++ tests on Android

[William Chan (陈智昌)]

This is my first post here so apologies for any silliness about this
question. Several tests that I've looked at don't work on Android due to
lack of locale support (
https://code.google.com/p/android/issues/detail?id=57313#c2). So I'd like
to disable tests that rely on this. An example of such a test is
http://llvm.org/svn/llvm-project/libcxx/trunk/test/re/re.alg/re.alg.match/basic.pass.cpp,
which does something like:

    std::locale::global(std::locale("cs_CZ.ISO8859-2"));
    {
        std::cmatch m;
        const char s[] = "m";
        assert(std::regex_match(s, m, std::regex("[a[=M=]z]",
                                                 std::regex_constants::basic)));
        assert(m.size() == 1);
        assert(!m.prefix().matched);
        assert(m.prefix().first == s);
        assert(m.prefix().second == m[0].first);
        assert(!m.suffix().matched);
        assert(m.suffix().first == m[0].second);
        assert(m.suffix().second == m[0].second);
        assert(m.length(0) == std::char_traits<char>::length(s));
        assert(m.position(0) == 0);
        assert(m.str(0) == s);
    }
    {
        std::cmatch m;
        const char s[] = "Ch";
        assert(std::regex_match(s, m, std::regex("[a[.ch.]z]",
                   std::regex_constants::basic | std::regex_constants::icase)));
        assert(m.size() == 1);
        assert(!m.prefix().matched);
        assert(m.prefix().first == s);
        assert(m.prefix().second == m[0].first);
        assert(!m.suffix().matched);
        assert(m.suffix().first == m[0].second);
        assert(m.suffix().second == m[0].second);
        assert(m.length(0) == std::char_traits<char>::length(s));
        assert(m.position(0) == 0);
        assert(m.str(0) == s);
    }
    std::locale::global(std::locale("C"));


What's the right way to disable this test for Android? Is there an
appropriate #ifdef I can use? Or should I move the tests out to a separate
file that's not built for Android?

Cheers.
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