unify implementation of [[deprecated]] attribute

.clang-format

@@ -39,6 +39,8 @@ AttributeMacros: [
                   '_CCCL_NODISCARD_FRIEND',
                   '_CCCL_NODISCARD',
                   '_CCCL_NORETURN',
+                  '_CCCL_DEPRECATED',
+                  '_CCCL_DEPRECATED_BECAUSE',
                   '_CCCL_TYPE_VISIBILITY_DEFAULT',
                   '_CCCL_VISIBILITY_HIDDEN',
                   'CUB_RUNTIME_FUNCTION',

cub/cub/util_deprecated.cuh

@@ -52,21 +52,9 @@
 #ifdef CUB_IGNORE_DEPRECATED_API
 #  define CUB_DEPRECATED
 #  define CUB_DEPRECATED_BECAUSE(MSG)
-#elif _CCCL_STD_VER >= 2014
-#  define CUB_DEPRECATED              [[deprecated]]
-#  define CUB_DEPRECATED_BECAUSE(MSG) [[deprecated(MSG)]]
-#elif _CCCL_COMPILER(MSVC)
-#  define CUB_DEPRECATED              __declspec(deprecated)
-#  define CUB_DEPRECATED_BECAUSE(MSG) __declspec(deprecated(MSG))
-#elif _CCCL_COMPILER(CLANG)
-#  define CUB_DEPRECATED              __attribute__((deprecated))
-#  define CUB_DEPRECATED_BECAUSE(MSG) __attribute__((deprecated(MSG)))
-#elif _CCCL_COMPILER(GCC)
-#  define CUB_DEPRECATED              __attribute__((deprecated))
-#  define CUB_DEPRECATED_BECAUSE(MSG) __attribute__((deprecated(MSG)))
 #else
-#  define CUB_DEPRECATED
-#  define CUB_DEPRECATED_BECAUSE(MSG)
+#  define CUB_DEPRECATED              _CCCL_DEPRECATED
+#  define CUB_DEPRECATED_BECAUSE(MSG) _CCCL_DEPRECATED_BECAUSE(MSG)
 #endif
 
 #define CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED             \

libcudacxx/include/cuda/std/__cccl/attributes.h

@@ -115,4 +115,26 @@
 #  define _CCCL_RESTRICT __restrict__
 #endif // ^^^ !_CCCL_COMPILER(MSVC) ^^^
 
+// define deprecated macro to vendor specific attributes
+#if _CCCL_COMPILER(MSVC)
+#  define _CCCL_DEPRECATED               __declspec(deprecated)
+#  define _CCCL_DEPRECATED_BECAUSE(_MSG) __declspec(deprecated(_MSG))
+#elif _CCCL_HAS_ATTRIBUTE(__deprecated__)
+#  define _CCCL_DEPRECATED               __attribute__((__deprecated__))
+#  define _CCCL_DEPRECATED_BECAUSE(_MSG) __attribute__((__deprecated__(_MSG)))
+#else
+#  define _CCCL_DEPRECATED
+#  define _CCCL_DEPRECATED_BECAUSE(_MSG)
+#endif
+
+// use the C++14 deprecated attribute if available instead of the vendor specific ones except for GCC before 13 and
+// Clang before 13 which have issues with combining it with other attributes
+#if _CCCL_STD_VER >= 2014 && _CCCL_HAS_CPP_ATTRIBUTE(deprecated) && !_CCCL_COMPILER(GCC, <, 13) \
+  && !_CCCL_COMPILER(CLANG, <, 13)
+#  undef _CCCL_DEPRECATED
+#  undef _CCCL_DEPRECATED_BECAUSE
+#  define _CCCL_DEPRECATED               [[deprecated]]
+#  define _CCCL_DEPRECATED_BECAUSE(_MSG) [[deprecated(_MSG)]]
+#endif
+
 #endif // __CCCL_ATTRIBUTES_H

libcudacxx/include/cuda/std/detail/libcxx/include/__config

@@ -630,13 +630,7 @@ typedef unsigned int char32_t;
 // by defining _LIBCUDACXX_DISABLE_DEPRECATION_WARNINGS.
 // NVCC 11.1 and 11.2 are broken with the deprecated attribute, so disable it
 #  if !defined(_LIBCUDACXX_DISABLE_DEPRECATION_WARNINGS) && _CCCL_CUDACC_AT_LEAST(11, 3)
-#    if _CCCL_HAS_ATTRIBUTE(deprecated)
-#      define _LIBCUDACXX_DEPRECATED __attribute__((deprecated))
-#    elif _CCCL_STD_VER > 2011
-#      define _LIBCUDACXX_DEPRECATED [[deprecated]]
-#    else
-#      define _LIBCUDACXX_DEPRECATED
-#    endif
+#    define _LIBCUDACXX_DEPRECATED _CCCL_DEPRECATED
 #  else
 #    define _LIBCUDACXX_DEPRECATED
 #  endif

thrust/thrust/detail/config/deprecated.h

@@ -40,19 +40,7 @@
 #ifdef THRUST_IGNORE_DEPRECATED_API
 #  define THRUST_DEPRECATED
 #  define THRUST_DEPRECATED_BECAUSE(MSG)
-#elif _CCCL_STD_VER >= 2014
-#  define THRUST_DEPRECATED              [[deprecated]]
-#  define THRUST_DEPRECATED_BECAUSE(MSG) [[deprecated(MSG)]]
-#elif _CCCL_COMPILER(MSVC)
-#  define THRUST_DEPRECATED              __declspec(deprecated)
-#  define THRUST_DEPRECATED_BECAUSE(MSG) __declspec(deprecated(MSG))
-#elif _CCCL_COMPILER(CLANG)
-#  define THRUST_DEPRECATED              __attribute__((deprecated))
-#  define THRUST_DEPRECATED_BECAUSE(MSG) __attribute__((deprecated(MSG)))
-#elif _CCCL_COMPILER(GCC)
-#  define THRUST_DEPRECATED              __attribute__((deprecated))
-#  define THRUST_DEPRECATED_BECAUSE(MSG) __attribute__((deprecated(MSG)))
 #else
-#  define THRUST_DEPRECATED
-#  define THRUST_DEPRECATED_BECAUSE(MSG)
+#  define THRUST_DEPRECATED              _CCCL_DEPRECATED
+#  define THRUST_DEPRECATED_BECAUSE(MSG) _CCCL_DEPRECATED_BECAUSE(MSG)
 #endif