[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, 44 insertions, 42 deletions

diff --git a/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp b/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp
index ff045a913fd..5b0bb3bff37 100644
--- a/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp
+++ b/libcxx/test/std/depr/depr.c.headers/inttypes_h.pass.cpp
@@ -872,54 +872,56 @@
 #error SCNxPTR not defined
 #endif
 
+template <class T> void test()
+{
+    T t = 0;
+    ((void)t); // Prevent unused warning
+}
+
 int main()
 {
-    {
-    int8_t  i1 = 0;
-    int16_t i2 = 0;
-    int32_t i3 = 0;
-    int64_t i4 = 0;
-    }
-    {
-    uint8_t  i1 = 0;
-    uint16_t i2 = 0;
-    uint32_t i3 = 0;
-    uint64_t i4 = 0;
-    }
-    {
-    int_least8_t  i1 = 0;
-    int_least16_t i2 = 0;
-    int_least32_t i3 = 0;
-    int_least64_t i4 = 0;
-    }
-    {
-    uint_least8_t  i1 = 0;
-    uint_least16_t i2 = 0;
-    uint_least32_t i3 = 0;
-    uint_least64_t i4 = 0;
-    }
-    {
-    int_fast8_t  i1 = 0;
-    int_fast16_t i2 = 0;
-    int_fast32_t i3 = 0;
-    int_fast64_t i4 = 0;
-    }
-    {
-    uint_fast8_t  i1 = 0;
-    uint_fast16_t i2 = 0;
-    uint_fast32_t i3 = 0;
-    uint_fast64_t i4 = 0;
-    }
-    {
-    intptr_t  i1 = 0;
-    uintptr_t i2 = 0;
-    intmax_t  i3 = 0;
-    uintmax_t i4 = 0;
-    }
+    test<int8_t >();
+    test<int16_t>();
+    test<int32_t>();
+    test<int64_t>();
+
+    test<uint8_t >();
+    test<uint16_t>();
+    test<uint32_t>();
+    test<uint64_t>();
+
+    test<int_least8_t >();
+    test<int_least16_t>();
+    test<int_least32_t>();
+    test<int_least64_t>();
+
+    test<uint_least8_t >();
+    test<uint_least16_t>();
+    test<uint_least32_t>();
+    test<uint_least64_t>();
+
+    test<int_fast8_t >();
+    test<int_fast16_t>();
+    test<int_fast32_t>();
+    test<int_fast64_t>();
+
+    test<uint_fast8_t >();
+    test<uint_fast16_t>();
+    test<uint_fast32_t>();
+    test<uint_fast64_t>();
+
+    test<intptr_t >();
+    test<uintptr_t>();
+    test<intmax_t >();
+    test<uintmax_t>();
+
     {
     imaxdiv_t  i1 = {};
+    ((void)i1); // Prevent unused warning
     }
+
     intmax_t i = 0;
+    ((void)i); // Prevent unused warning
     static_assert((std::is_same<decltype(imaxabs(i)), intmax_t>::value), "");
     static_assert((std::is_same<decltype(imaxdiv(i, i)), imaxdiv_t>::value), "");
     static_assert((std::is_same<decltype(strtoimax("", (char**)0, 0)), intmax_t>::value), "");