New approach for dealing with copy/move operations

.clang-tidy

@@ -1,5 +1,5 @@
 ---
-Checks:          'clang-diagnostic-*,clang-analyzer-*,*,-hicpp-uppercase-literal-suffix,-readability-uppercase-literal-suffix,-modernize-use-trailing-return-type,-readability-named-parameter,-hicpp-named-parameter,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-hicpp-no-array-decay,-llvm-header-guard,-cppcoreguidelines-macro-usage,-google-runtime-references,-readability-isolate-declaration,-fuchsia-default-arguments-calls,-fuchsia-overloaded-operator,-fuchsia-default-arguments-declarations,-readability-else-after-return,-google-runtime-int,-hicpp-signed-bitwise,-cert-dcl21-cpp,-cppcoreguidelines-avoid-magic-numbers,-readability-magic-numbers,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-type-reinterpret-cast,-cppcoreguidelines-avoid-c-arrays,-hicpp-avoid-c-arrays,-modernize-avoid-c-arrays,-modernize-use-transparent-functors,-cert-dcl16-c,-cppcoreguidelines-pro-type-union-access,-bugprone-branch-clone,-fuchsia-statically-constructed-objects,-cppcoreguidelines-pro-bounds-constant-array-index,-readability-static-accessed-through-instance,-cppcoreguidelines-pro-type-vararg,-hicpp-vararg,-llvmlibc-restrict-system-libc-headers,-llvmlibc-callee-namespace,-llvmlibc-implementation-in-namespace,-llvm-else-after-return,-fuchsia-trailing-return,-readability-identifier-length,-altera-unroll-loops,-altera-id-dependent-backward-branch,-altera-struct-pack-align,-performance-no-int-to-ptr,-readability-function-cognitive-complexity,-llvmlibc-inline-function-decl,-misc-include-cleaner,-fuchsia-multiple-inheritance'
+Checks:          'clang-diagnostic-*,clang-analyzer-*,*,-hicpp-uppercase-literal-suffix,-readability-uppercase-literal-suffix,-modernize-use-trailing-return-type,-readability-named-parameter,-hicpp-named-parameter,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-hicpp-no-array-decay,-llvm-header-guard,-cppcoreguidelines-macro-usage,-google-runtime-references,-readability-isolate-declaration,-fuchsia-default-arguments-calls,-fuchsia-overloaded-operator,-fuchsia-default-arguments-declarations,-readability-else-after-return,-google-runtime-int,-hicpp-signed-bitwise,-cert-dcl21-cpp,-cppcoreguidelines-avoid-magic-numbers,-readability-magic-numbers,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-type-reinterpret-cast,-cppcoreguidelines-avoid-c-arrays,-hicpp-avoid-c-arrays,-modernize-avoid-c-arrays,-modernize-use-transparent-functors,-cert-dcl16-c,-cppcoreguidelines-pro-type-union-access,-bugprone-branch-clone,-fuchsia-statically-constructed-objects,-cppcoreguidelines-pro-bounds-constant-array-index,-readability-static-accessed-through-instance,-cppcoreguidelines-pro-type-vararg,-hicpp-vararg,-llvmlibc-restrict-system-libc-headers,-llvmlibc-callee-namespace,-llvmlibc-implementation-in-namespace,-llvm-else-after-return,-fuchsia-trailing-return,-readability-identifier-length,-altera-unroll-loops,-altera-id-dependent-backward-branch,-altera-struct-pack-align,-performance-no-int-to-ptr,-readability-function-cognitive-complexity,-llvmlibc-inline-function-decl,-misc-include-cleaner,-fuchsia-multiple-inheritance,-readability-use-concise-preprocessor-directives,-portability-template-virtual-member-function'
 WarningsAsErrors: '*'
 FormatStyle:     none
 User:            yardbird

.github/workflows/gha.yml

@@ -39,18 +39,12 @@ jobs:
       - uses: actions/checkout@v4
       - name: Build
         run: bash tools/gha_conda_docs.sh
-  osx_clang_16:
-    runs-on: macos-13
+  osx:
+    runs-on: macos-latest
     steps:
       - uses: actions/checkout@v4
       - name: Build
-        run: bash tools/gha_osx_clang_16.sh
-  osx_clang_18:
-    runs-on: macos-13
-    steps:
-      - uses: actions/checkout@v4
-      - name: Build
-        run: bash tools/gha_osx_clang_18.sh
+        run: bash tools/gha_osx.sh
   windows_vs2022_cpp20:
     runs-on: windows-2022
     steps:

cmake/yacma/YACMACompilerLinkerSettings.cmake

@@ -125,6 +125,18 @@ if(NOT _YACMACompilerLinkerSettingsRun)
         _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(-Warray-bounds-pointer-arithmetic)
         # New warnings in clang 14.
         _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(-Warray-parameter)
+        # NOTE: clang 17 enables by default a new compiler flag called "-fassume-unique-vtables":
+        #
+        # https://releases.llvm.org/17.0.1/tools/clang/docs/ReleaseNotes.html#c-language-changes
+        #
+        # This flag however seems to be buggy:
+        #
+        # https://github.com/llvm/llvm-project/issues/71196
+        #
+        # On our part, in several projects we are experiencing Boost.serialization failures when
+        # (de)serialising derived objects through pointers to bases. Thus, we forcibly disable
+        # this new flag.
+        _YACMA_CHECK_ENABLE_CXX_FLAG(-fno-assume-unique-vtables)
     endif()
 
     # Common configuration for GCC, clang and Intel.
@@ -198,6 +210,12 @@ if(NOT _YACMACompilerLinkerSettingsRun)
         _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(/W4)
         # Treat warnings as errors.
         _YACMA_CHECK_ENABLE_DEBUG_CXX_FLAG(/WX)
+        # Strict conformance mode.
+        _YACMA_CHECK_ENABLE_CXX_FLAG(/permissive-)
+        # Strict preprocessor conformance mode.
+        # NOTE: this seems to cause issues in some
+        # projects, disable for now.
+        # _YACMA_CHECK_ENABLE_CXX_FLAG(/Zc:preprocessor)
     endif()
 
     # Set the cache variables.