Suppress NVCC unused variable warnings (#2427)

Closes #2306

Author: ahans

src/catch2/internal/catch_compiler_capabilities.hpp

@@ -57,6 +57,12 @@
 
 #endif
 
+#if defined(__CUDACC__) && !defined(__clang__)
+#    define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "nv_diagnostic push" )
+#    define CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION  _Pragma( "nv_diagnostic pop" )
+#    define CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS _Pragma( "nv_diag_suppress 177" )
+#endif
+
 #if defined(__clang__) && !defined(_MSC_VER)
 
 #    define CATCH_INTERNAL_START_WARNINGS_SUPPRESSION _Pragma( "clang diagnostic push" )

src/catch2/internal/catch_test_registry.hpp

@@ -77,6 +77,7 @@ struct AutoReg : Detail::NonCopyable {
         static void TestName(); \
         CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
         CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
         namespace{ Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( &TestName ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ __VA_ARGS__ } ); } /* NOLINT */ \
         CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
         static void TestName()
@@ -87,13 +88,15 @@ struct AutoReg : Detail::NonCopyable {
     #define INTERNAL_CATCH_METHOD_AS_TEST_CASE( QualifiedMethod, ... ) \
         CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
         CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
         namespace{ Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( &QualifiedMethod ), CATCH_INTERNAL_LINEINFO, "&" #QualifiedMethod, Catch::NameAndTags{ __VA_ARGS__ } ); } /* NOLINT */ \
         CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION
 
     ///////////////////////////////////////////////////////////////////////////////
     #define INTERNAL_CATCH_TEST_CASE_METHOD2( TestName, ClassName, ... )\
         CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
         CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+        CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
         namespace{ \
             struct TestName : INTERNAL_CATCH_REMOVE_PARENS(ClassName) { \
                 void test(); \
@@ -110,6 +113,7 @@ struct AutoReg : Detail::NonCopyable {
         do { \
             CATCH_INTERNAL_START_WARNINGS_SUPPRESSION \
             CATCH_INTERNAL_SUPPRESS_GLOBALS_WARNINGS \
+            CATCH_INTERNAL_SUPPRESS_UNUSED_VARIABLE_WARNINGS \
             Catch::AutoReg INTERNAL_CATCH_UNIQUE_NAME( autoRegistrar )( Catch::makeTestInvoker( Function ), CATCH_INTERNAL_LINEINFO, Catch::StringRef(), Catch::NameAndTags{ __VA_ARGS__ } ); /* NOLINT */ \
             CATCH_INTERNAL_STOP_WARNINGS_SUPPRESSION \
         } while(false)