Fix various useful clang-tidy warnings

* bugprone-branch-clone
* bugprone-copy-constructor-init
* bugprone-empty-catch
* bugprone-sizeof-expression
* bugprone-switch-missing-default-case
* bugprone-unused-local-non-trivial-variable
* clang-analyzer-core.uninitialized.Assign
* clang-analyzer-cplusplus.Move
* clang-analyzer-optin.cplusplus.VirtualCall
* modernize-loop-convert
* modernize-raw-string-literal
* modernize-use-equals-default
* modernize-use-override
* modernize-use-using
* performance-avoid-endl
* performance-inefficient-string-concatenation
* performance-inefficient-vector-operation
* performance-noexcept-move-constructor
* performance-unnecessary-value-param (and improve generator example)
* readability-duplicate-include
* readability-inconsistent-declaration-parameter-name
* readability-non-const-parameter
* readability-redundant-casting
* readability-redundant-member-init
* readability-redundant-smartptr-get
* readability-static-accessed-through-instance
* unused variable in amalgamted tests

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/SelfTest/UsageTests/Class.tests.cpp b/tests/SelfTest/UsageTests/Class.tests.cpp
index bab7a684..682171da 100644
--- a/tests/SelfTest/UsageTests/Class.tests.cpp
+++ b/tests/SelfTest/UsageTests/Class.tests.cpp
@@ -39,7 +39,7 @@ namespace {
     };
 
     template <typename T> struct Template_Fixture_2 {
-        Template_Fixture_2() {}
+        Template_Fixture_2() = default;
 
         T m_a;
     };