[libcxx] [test] Add (void) casts to operator new calls, to suppress warnings generated by [[nodiscard]].

This allows these tests to pass when compiled by MSVC++.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@356632 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.sh.cpp
index a04ceb6..d1c6ced 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new[](4);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new[](4);
 
   return 0;
 }
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.sh.cpp
index e2a6159..090cbd8 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new[](4, std::align_val_t{4});  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new[](4, std::align_val_t{4});
 
   return 0;
 }
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.sh.cpp
index 5ad8186..2e22297 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_align_nothrow.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new[](4, std::align_val_t{4}, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new[](4, std::align_val_t{4}, std::nothrow);
 
   return 0;
 }
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.sh.cpp
index 53af2c7..72d5744 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.array/new_size_nothrow.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new[](4, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new[](4, std::nothrow);
 
   return 0;
 }
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.sh.cpp
index a0d99c7..b15f1da 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new(4, std::align_val_t{4});  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new(4, std::align_val_t{4});
 
   return 0;
 }
diff --git a/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.sh.cpp b/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.sh.cpp
index 54b25ac..ae80185 100644
--- a/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.sh.cpp
+++ b/test/std/language.support/support.dynamic/new.delete/new.delete.single/new_size_align_nothrow.sh.cpp
@@ -21,7 +21,7 @@
 
 int main(int, char**)
 {
-    ::operator new(4, std::align_val_t{4}, std::nothrow);  // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}}
+    (void)::operator new(4, std::align_val_t{4}, std::nothrow);
 
   return 0;
 }