[libcxx] [test] D26314: Fix MSVC warning C4189 "local variable is initialized but not referenced".

test/std/depr/depr.c.headers/inttypes_h.pass.cpp
test/std/input.output/file.streams/c.files/cinttypes.pass.cpp
test/std/input.output/iostream.forward/iosfwd.pass.cpp
Add test() to avoid a bunch of void-casts, although we still need a few.

test/std/input.output/iostream.format/quoted.manip/quoted.pass.cpp
skippingws was unused (it's unclear to me whether this was mistakenly copy-pasted from round_trip() below).

test/std/localization/locale.categories/category.collate/locale.collate/types.pass.cpp
test/std/localization/locale.categories/category.ctype/facet.ctype.special/types.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.codecvt/types_char.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.codecvt/types_wchar_t.pass.cpp
test/std/localization/locale.categories/category.ctype/locale.ctype/types.pass.cpp
test/std/localization/locale.categories/facet.numpunct/locale.numpunct/types.pass.cpp
test/std/localization/locales/locale.global.templates/use_facet.pass.cpp
When retrieving facets, the references are unused.

test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_long.pass.cpp
test/std/localization/locale.categories/category.numeric/locale.nm.put/facet.num.put.members/put_unsigned_long.pass.cpp
"std::ios_base::iostate err = ios.goodbit;" was completely unused here.

test/std/localization/locale.categories/category.time/locale.time.get/time_base.pass.cpp
test/std/numerics/c.math/ctgmath.pass.cpp
test/std/numerics/rand/rand.device/entropy.pass.cpp
test/std/numerics/rand/rand.device/eval.pass.cpp
test/std/strings/basic.string/string.modifiers/string_copy/copy.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eof.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eof.pass.cpp
test/std/thread/futures/futures.promise/dtor.pass.cpp
test/std/thread/futures/futures.task/futures.task.members/dtor.pass.cpp
test/std/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
These variables are verifying types but are otherwise unused.

test/std/strings/basic.string/string.capacity/reserve.pass.cpp
old_cap was unused (it's unclear to me whether it was intended to be used).

test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char16_t/lt.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.char32_t/lt.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/eq.pass.cpp
test/std/strings/char.traits/char.traits.specializations/char.traits.specializations.wchar.t/lt.pass.cpp
These tests contained unused characters.

llvm-svn: 286847

1 files changed, 106 insertions, 125 deletions

diff --git a/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp b/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp
index 7250c2adb27..53d12ecfc77 100644
--- a/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp
+++ b/libcxx/test/std/input.output/iostream.forward/iosfwd.pass.cpp
@@ -12,131 +12,112 @@
 #include <iosfwd>
 #include <cwchar>  // for mbstate_t
 
+template <class Ptr> void test()
+{
+    Ptr p = 0;
+    ((void)p); // Prevent unused warning
+}
+
 int main()
 {
-    {
-    std::char_traits<char>*               t1 = 0;
-    std::char_traits<wchar_t>*            t2 = 0;
-    std::char_traits<unsigned short>*     t3 = 0;
-    }
-    {
-    std::basic_ios<char>*                 t1 = 0;
-    std::basic_ios<wchar_t>*              t2 = 0;
-    std::basic_ios<unsigned short>*       t3 = 0;
-    }
-    {
-    std::basic_streambuf<char>*           t1 = 0;
-    std::basic_streambuf<wchar_t>*        t2 = 0;
-    std::basic_streambuf<unsigned short>* t3 = 0;
-    }
-    {
-    std::basic_istream<char>*             t1 = 0;
-    std::basic_istream<wchar_t>*          t2 = 0;
-    std::basic_istream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_ostream<char>*             t1 = 0;
-    std::basic_ostream<wchar_t>*          t2 = 0;
-    std::basic_ostream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_iostream<char>*             t1 = 0;
-    std::basic_iostream<wchar_t>*          t2 = 0;
-    std::basic_iostream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_stringbuf<char>*             t1 = 0;
-    std::basic_stringbuf<wchar_t>*          t2 = 0;
-    std::basic_stringbuf<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_istringstream<char>*             t1 = 0;
-    std::basic_istringstream<wchar_t>*          t2 = 0;
-    std::basic_istringstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_ostringstream<char>*             t1 = 0;
-    std::basic_ostringstream<wchar_t>*          t2 = 0;
-    std::basic_ostringstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_stringstream<char>*             t1 = 0;
-    std::basic_stringstream<wchar_t>*          t2 = 0;
-    std::basic_stringstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_filebuf<char>*             t1 = 0;
-    std::basic_filebuf<wchar_t>*          t2 = 0;
-    std::basic_filebuf<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_ifstream<char>*             t1 = 0;
-    std::basic_ifstream<wchar_t>*          t2 = 0;
-    std::basic_ifstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_ofstream<char>*             t1 = 0;
-    std::basic_ofstream<wchar_t>*          t2 = 0;
-    std::basic_ofstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::basic_fstream<char>*             t1 = 0;
-    std::basic_fstream<wchar_t>*          t2 = 0;
-    std::basic_fstream<unsigned short>*   t3 = 0;
-    }
-    {
-    std::istreambuf_iterator<char>*             t1 = 0;
-    std::istreambuf_iterator<wchar_t>*          t2 = 0;
-    std::istreambuf_iterator<unsigned short>*   t3 = 0;
-    }
-    {
-    std::ostreambuf_iterator<char>*             t1 = 0;
-    std::ostreambuf_iterator<wchar_t>*          t2 = 0;
-    std::ostreambuf_iterator<unsigned short>*   t3 = 0;
-    }
-    {
-    std::ios*           t1 = 0;
-    std::wios*          t2 = 0;
-    }
-    {
-    std::streambuf*        t1 = 0;
-    std::istream*          t2 = 0;
-    std::ostream*          t3 = 0;
-    std::iostream*         t4 = 0;
-    }
-    {
-    std::stringbuf*            t1 = 0;
-    std::istringstream*        t2 = 0;
-    std::ostringstream*        t3 = 0;
-    std::stringstream*         t4 = 0;
-    }
-    {
-    std::filebuf*         t1 = 0;
-    std::ifstream*        t2 = 0;
-    std::ofstream*        t3 = 0;
-    std::fstream*         t4 = 0;
-    }
-    {
-    std::wstreambuf*        t1 = 0;
-    std::wistream*          t2 = 0;
-    std::wostream*          t3 = 0;
-    std::wiostream*         t4 = 0;
-    }
-    {
-    std::wstringbuf*            t1 = 0;
-    std::wistringstream*        t2 = 0;
-    std::wostringstream*        t3 = 0;
-    std::wstringstream*         t4 = 0;
-    }
-    {
-    std::wfilebuf*         t1 = 0;
-    std::wifstream*        t2 = 0;
-    std::wofstream*        t3 = 0;
-    std::wfstream*         t4 = 0;
-    }
-    {
-    std::fpos<std::mbstate_t>*   t1 = 0;
-    std::streampos*              t2 = 0;
-    std::wstreampos*             t3 = 0;
-    }
+    test<std::char_traits<char>*          >();
+    test<std::char_traits<wchar_t>*       >();
+    test<std::char_traits<unsigned short>*>();
+
+    test<std::basic_ios<char>*          >();
+    test<std::basic_ios<wchar_t>*       >();
+    test<std::basic_ios<unsigned short>*>();
+
+    test<std::basic_streambuf<char>*          >();
+    test<std::basic_streambuf<wchar_t>*       >();
+    test<std::basic_streambuf<unsigned short>*>();
+
+    test<std::basic_istream<char>*          >();
+    test<std::basic_istream<wchar_t>*       >();
+    test<std::basic_istream<unsigned short>*>();
+
+    test<std::basic_ostream<char>*          >();
+    test<std::basic_ostream<wchar_t>*       >();
+    test<std::basic_ostream<unsigned short>*>();
+
+    test<std::basic_iostream<char>*          >();
+    test<std::basic_iostream<wchar_t>*       >();
+    test<std::basic_iostream<unsigned short>*>();
+
+    test<std::basic_stringbuf<char>*          >();
+    test<std::basic_stringbuf<wchar_t>*       >();
+    test<std::basic_stringbuf<unsigned short>*>();
+
+    test<std::basic_istringstream<char>*          >();
+    test<std::basic_istringstream<wchar_t>*       >();
+    test<std::basic_istringstream<unsigned short>*>();
+
+    test<std::basic_ostringstream<char>*          >();
+    test<std::basic_ostringstream<wchar_t>*       >();
+    test<std::basic_ostringstream<unsigned short>*>();
+
+    test<std::basic_stringstream<char>*          >();
+    test<std::basic_stringstream<wchar_t>*       >();
+    test<std::basic_stringstream<unsigned short>*>();
+
+    test<std::basic_filebuf<char>*          >();
+    test<std::basic_filebuf<wchar_t>*       >();
+    test<std::basic_filebuf<unsigned short>*>();
+
+    test<std::basic_ifstream<char>*          >();
+    test<std::basic_ifstream<wchar_t>*       >();
+    test<std::basic_ifstream<unsigned short>*>();
+
+    test<std::basic_ofstream<char>*          >();
+    test<std::basic_ofstream<wchar_t>*       >();
+    test<std::basic_ofstream<unsigned short>*>();
+
+    test<std::basic_fstream<char>*          >();
+    test<std::basic_fstream<wchar_t>*       >();
+    test<std::basic_fstream<unsigned short>*>();
+
+    test<std::istreambuf_iterator<char>*          >();
+    test<std::istreambuf_iterator<wchar_t>*       >();
+    test<std::istreambuf_iterator<unsigned short>*>();
+
+    test<std::ostreambuf_iterator<char>*          >();
+    test<std::ostreambuf_iterator<wchar_t>*       >();
+    test<std::ostreambuf_iterator<unsigned short>*>();
+
+    test<std::ios* >();
+    test<std::wios*>();
+
+    test<std::streambuf*>();
+    test<std::istream*  >();
+    test<std::ostream*  >();
+    test<std::iostream* >();
+
+    test<std::stringbuf*    >();
+    test<std::istringstream*>();
+    test<std::ostringstream*>();
+    test<std::stringstream* >();
+
+    test<std::filebuf* >();
+    test<std::ifstream*>();
+    test<std::ofstream*>();
+    test<std::fstream* >();
+
+    test<std::wstreambuf*>();
+    test<std::wistream*  >();
+    test<std::wostream*  >();
+    test<std::wiostream* >();
+
+    test<std::wstringbuf*    >();
+    test<std::wistringstream*>();
+    test<std::wostringstream*>();
+    test<std::wstringstream* >();
+
+    test<std::wfilebuf* >();
+    test<std::wifstream*>();
+    test<std::wofstream*>();
+    test<std::wfstream* >();
+
+    test<std::fpos<std::mbstate_t>*>();
+    test<std::streampos*           >();
+    test<std::wstreampos*          >();
 }