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- // Protocol Buffers - Google's data interchange format
- // Copyright 2008 Google Inc. All rights reserved.
- // https://developers.google.com/protocol-buffers/
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are
- // met:
- //
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above
- // copyright notice, this list of conditions and the following disclaimer
- // in the documentation and/or other materials provided with the
- // distribution.
- // * Neither the name of Google Inc. nor the names of its
- // contributors may be used to endorse or promote products derived from
- // this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- // This file defines common macros that are used in protobuf.
- //
- // To hide these definitions from the outside world (and to prevent collisions
- // if more than one version of protobuf is #included in the same project) you
- // must follow this pattern when #including port_def.inc in a header file:
- //
- // #include "other_header.h"
- // #include "message.h"
- // // etc.
- //
- // #include "port_def.inc" // MUST be last header included
- //
- // // Definitions for this header.
- //
- // #include "port_undef.inc"
- //
- // This is a textual header with no include guard, because we want to
- // detect/prohibit anytime it is #included twice without a corresponding
- // #undef.
- // The definitions in this file are intended to be portable across Clang,
- // GCC, and MSVC. Function-like macros are usable without an #ifdef guard.
- // Syntax macros (for example, attributes) are always defined, although
- // they may be empty.
- //
- // Some definitions rely on the NDEBUG macro and/or (in MSVC) _DEBUG:
- // - https://en.cppreference.com/w/c/error/assert
- // - https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros#microsoft-specific-predefined-macros
- //
- // References for predefined macros:
- // - Standard: https://en.cppreference.com/w/cpp/preprocessor/replace
- // - Clang: https://clang.llvm.org/docs/LanguageExtensions.html
- // (see also GCC predefined macros)
- // - GCC: https://gcc.gnu.org/onlinedocs/cpp/Predefined-Macros.html
- // - MSVC: https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
- // - Interactive (Clang/GCC only): https://www.compiler-explorer.com/z/hc6jKd3sj
- //
- // References for attributes (and extension attributes):
- // - Standard: https://en.cppreference.com/w/cpp/language/attributes
- // - Clang: https://clang.llvm.org/docs/AttributeReference.html
- // - GCC: https://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html
- // (see Clang attribute docs as well)
- //
- // References for standard C++ language conformance (and minimum versions):
- // - Clang: https://clang.llvm.org/cxx_status.html
- // - GCC: https://gcc.gnu.org/projects/cxx-status.html
- // - MSVC: https://docs.microsoft.com/en-us/cpp/overview/visual-cpp-language-conformance
- //
- // Historical release notes (which can help to determine minimum versions):
- // - Clang: https://releases.llvm.org/
- // - GCC: https://gcc.gnu.org/releases.html
- // - MSVC: https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-history
- // https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes-history
- // Portable fallbacks for C++20 feature test macros:
- // https://en.cppreference.com/w/cpp/feature_test
- #ifndef __has_cpp_attribute
- #define __has_cpp_attribute(x) 0
- #define PROTOBUF_has_cpp_attribute_DEFINED_
- #endif
- // Portable fallback for Clang's __has_feature macro:
- // https://clang.llvm.org/docs/LanguageExtensions.html#has-feature-and-has-extension
- #ifndef __has_feature
- #define __has_feature(x) 0
- #define PROTOBUF_has_feature_DEFINED_
- #endif
- // Portable fallback for Clang's __has_warning macro:
- #ifndef __has_warning
- #define __has_warning(x) 0
- #define PROTOBUF_has_warning_DEFINED_
- #endif
- // Portable fallbacks for the __has_attribute macro (GCC and Clang):
- // https://clang.llvm.org/docs/LanguageExtensions.html#has-attribute
- // https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fattribute.html
- #ifndef __has_attribute
- #define __has_attribute(x) 0
- #define PROTOBUF_has_attribute_DEFINED_
- #endif
- // Portable fallback for __has_builtin (GCC and Clang):
- // https://clang.llvm.org/docs/LanguageExtensions.html#has-builtin
- // https://gcc.gnu.org/onlinedocs/cpp/_005f_005fhas_005fbuiltin.html
- #ifndef __has_builtin
- #define __has_builtin(x) 0
- #define PROTOBUF_has_builtin_DEFINED_
- #endif
- // Portable check for GCC minimum version:
- // https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
- #if defined(__GNUC__) && defined(__GNUC_MINOR__) \
- && defined(__GNUC_PATCHLEVEL__)
- # define PROTOBUF_GNUC_MIN(x, y) \
- (__GNUC__ > (x) || __GNUC__ == (x) && __GNUC_MINOR__ >= (y))
- #else
- # define PROTOBUF_GNUC_MIN(x, y) 0
- #endif
- // Portable check for MSVC minimum version:
- // https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
- #if defined(_MSC_VER)
- #define PROTOBUF_MSC_VER_MIN(x) (_MSC_VER >= x)
- #else
- #define PROTOBUF_MSC_VER_MIN(x) 0
- #endif
- // Portable check for minimum C++ language version:
- // https://en.cppreference.com/w/cpp/preprocessor/replace
- // https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros
- #if !defined(_MSVC_LANG)
- #define PROTOBUF_CPLUSPLUS_MIN(x) (__cplusplus >= x)
- #else
- #define PROTOBUF_CPLUSPLUS_MIN(x) (_MSVC_LANG >= x)
- #endif
- // Future versions of protobuf will include breaking changes to some APIs.
- // This macro can be set to enable these API changes ahead of time, so that
- // user code can be updated before upgrading versions of protobuf.
- // #define PROTOBUF_FUTURE_BREAKING_CHANGES 1
- #ifdef PROTOBUF_VERSION
- #error PROTOBUF_VERSION was previously defined
- #endif
- #define PROTOBUF_VERSION 3018001
- #ifdef PROTOBUF_MIN_HEADER_VERSION_FOR_PROTOC
- #error PROTOBUF_MIN_HEADER_VERSION_FOR_PROTOC was previously defined
- #endif
- #define PROTOBUF_MIN_HEADER_VERSION_FOR_PROTOC 3018000
- #ifdef PROTOBUF_MIN_PROTOC_VERSION
- #error PROTOBUF_MIN_PROTOC_VERSION was previously defined
- #endif
- #define PROTOBUF_MIN_PROTOC_VERSION 3018000
- #ifdef PROTOBUF_VERSION_SUFFIX
- #error PROTOBUF_VERSION_SUFFIX was previously defined
- #endif
- #define PROTOBUF_VERSION_SUFFIX ""
- #if defined(PROTOBUF_NAMESPACE) || defined(PROTOBUF_NAMESPACE_ID)
- #error PROTOBUF_NAMESPACE or PROTOBUF_NAMESPACE_ID was previously defined
- #endif
- #define PROTOBUF_NAMESPACE "google::protobuf"
- #define PROTOBUF_NAMESPACE_ID google::protobuf
- #define PROTOBUF_NAMESPACE_OPEN \
- namespace google { \
- namespace protobuf {
- #define PROTOBUF_NAMESPACE_CLOSE \
- } /* namespace protobuf */ \
- } /* namespace google */
- #ifdef PROTOBUF_ALWAYS_INLINE
- #error PROTOBUF_ALWAYS_INLINE was previously defined
- #endif
- // For functions we want to force inline.
- #if defined(PROTOBUF_NO_INLINE)
- # define PROTOBUF_ALWAYS_INLINE
- #elif PROTOBUF_GNUC_MIN(3, 1)
- # define PROTOBUF_ALWAYS_INLINE __attribute__((always_inline))
- #elif defined(_MSC_VER)
- # define PROTOBUF_ALWAYS_INLINE __forceinline
- #else
- # define PROTOBUF_ALWAYS_INLINE
- #endif
- #ifdef PROTOBUF_NDEBUG_INLINE
- #error PROTOBUF_NDEBUG_INLINE was previously defined
- #endif
- // Avoid excessive inlining in non-optimized builds. Without other optimizations
- // the inlining is not going to provide benefits anyway and the huge resulting
- // functions, especially in the proto-generated serialization functions, produce
- // stack frames so large that many tests run into stack overflows (b/32192897).
- #if defined(NDEBUG) || (defined(_MSC_VER) && !defined(_DEBUG))
- # define PROTOBUF_NDEBUG_INLINE PROTOBUF_ALWAYS_INLINE
- #else
- # define PROTOBUF_NDEBUG_INLINE
- #endif
- // Note that PROTOBUF_NOINLINE is an attribute applied to functions, to prevent
- // them from being inlined by the compiler. This is different from
- // PROTOBUF_NO_INLINE, which is a user-supplied macro that disables forced
- // inlining by PROTOBUF_(ALWAYS|NDEBUG)_INLINE.
- #ifdef PROTOBUF_NOINLINE
- #error PROTOBUF_NOINLINE was previously defined
- #endif
- #if PROTOBUF_GNUC_MIN(3, 1)
- # define PROTOBUF_NOINLINE __attribute__((noinline))
- #elif defined(_MSC_VER)
- // Seems to have been around since at least Visual Studio 2005
- # define PROTOBUF_NOINLINE __declspec(noinline)
- #endif
- #ifdef PROTOBUF_MUSTTAIL
- #error PROTOBUF_MUSTTAIL was previously defined
- #endif
- #ifdef PROTOBUF_TAILCALL
- #error PROTOBUF_TAILCALL was previously defined
- #endif
- #if __has_cpp_attribute(clang::musttail) && \
- !defined(__arm__) && !defined(_ARCH_PPC) && !defined(__wasm__)
- # ifndef PROTO2_OPENSOURCE
- // Compilation fails on ARM32: b/195943306
- // Compilation fails on powerpc64le: b/187985113
- # endif
- #define PROTOBUF_MUSTTAIL [[clang::musttail]]
- #define PROTOBUF_TAILCALL true
- #else
- #define PROTOBUF_MUSTTAIL
- #define PROTOBUF_TAILCALL false
- #endif
- #ifdef PROTOBUF_EXCLUSIVE_LOCKS_REQUIRED
- #error PROTOBUF_EXCLUSIVE_LOCKS_REQUIRED was previously defined
- #endif
- #if __has_attribute(exclusive_locks_required)
- #define PROTOBUF_EXCLUSIVE_LOCKS_REQUIRED(...) \
- __attribute__((exclusive_locks_required(__VA_ARGS__)))
- #else
- #define PROTOBUF_EXCLUSIVE_LOCKS_REQUIRED(...)
- #endif
- #ifdef PROTOBUF_NO_THREAD_SAFETY_ANALYSIS
- #error PROTOBUF_NO_THREAD_SAFETY_ANALYSIS was previously defined
- #endif
- #if __has_attribute(no_thread_safety_analysis)
- #define PROTOBUF_NO_THREAD_SAFETY_ANALYSIS \
- __attribute__((no_thread_safety_analysis))
- #else
- #define PROTOBUF_NO_THREAD_SAFETY_ANALYSIS
- #endif
- #ifdef PROTOBUF_GUARDED_BY
- #error PROTOBUF_GUARDED_BY was previously defined
- #endif
- #if __has_attribute(guarded_by)
- #define PROTOBUF_GUARDED_BY(x) __attribute__((guarded_by(x)))
- #else
- #define PROTOBUF_GUARDED_BY(x)
- #endif
- #ifdef PROTOBUF_LOCKS_EXCLUDED
- #error PROTOBUF_LOCKS_EXCLUDED was previously defined
- #endif
- #if __has_attribute(locks_excluded)
- #define PROTOBUF_LOCKS_EXCLUDED(...) \
- __attribute__((locks_excluded(__VA_ARGS__)))
- #else
- #define PROTOBUF_LOCKS_EXCLUDED(...)
- #endif
- #ifdef PROTOBUF_COLD
- #error PROTOBUF_COLD was previously defined
- #endif
- #if __has_attribute(cold) || PROTOBUF_GNUC_MIN(4, 3)
- # define PROTOBUF_COLD __attribute__((cold))
- #else
- # define PROTOBUF_COLD
- #endif
- #ifdef PROTOBUF_SECTION_VARIABLE
- #error PROTOBUF_SECTION_VARIABLE was previously defined
- #endif
- #define PROTOBUF_SECTION_VARIABLE(x)
- #if defined(PROTOBUF_DEPRECATED)
- #error PROTOBUF_DEPRECATED was previously defined
- #endif
- #if defined(PROTOBUF_DEPRECATED_MSG)
- #error PROTOBUF_DEPRECATED_MSG was previously defined
- #endif
- #if __has_attribute(deprecated) || PROTOBUF_GNUC_MIN(3, 0)
- # define PROTOBUF_DEPRECATED __attribute__((deprecated))
- # define PROTOBUF_DEPRECATED_MSG(msg) __attribute__((deprecated(msg)))
- #elif defined(_MSC_VER)
- # define PROTOBUF_DEPRECATED __declspec(deprecated)
- # define PROTOBUF_DEPRECATED_MSG(msg) __declspec(deprecated(msg))
- #else
- # define PROTOBUF_DEPRECATED
- # define PROTOBUF_DEPRECATED_MSG(msg)
- #endif
- #if defined(PROTOBUF_DEPRECATED_ENUM)
- #error PROTOBUF_DEPRECATED_ENUM was previously defined
- #endif
- #if defined(__clang__) || PROTOBUF_GNUC_MIN(6, 0)
- // https://gcc.gnu.org/gcc-6/changes.html
- # define PROTOBUF_DEPRECATED_ENUM __attribute__((deprecated))
- #else
- # define PROTOBUF_DEPRECATED_ENUM
- #endif
- #ifdef PROTOBUF_FUNC_ALIGN
- #error PROTOBUF_FUNC_ALIGN was previously defined
- #endif
- #if __has_attribute(aligned) || PROTOBUF_GNUC_MIN(4, 3)
- #define PROTOBUF_FUNC_ALIGN(bytes) __attribute__((aligned(bytes)))
- #else
- #define PROTOBUF_FUNC_ALIGN(bytes)
- #endif
- #ifdef PROTOBUF_RETURNS_NONNULL
- #error PROTOBUF_RETURNS_NONNULL was previously defined
- #endif
- #if __has_attribute(returns_nonnull) || PROTOBUF_GNUC_MIN(4, 9)
- #define PROTOBUF_RETURNS_NONNULL __attribute__((returns_nonnull))
- #else
- #define PROTOBUF_RETURNS_NONNULL
- #endif
- #ifdef PROTOBUF_ATTRIBUTE_REINITIALIZES
- #error PROTOBUF_ATTRIBUTE_REINITIALIZES was previously defined
- #endif
- #if __has_cpp_attribute(clang::reinitializes)
- #define PROTOBUF_ATTRIBUTE_REINITIALIZES [[clang::reinitializes]]
- #else
- #define PROTOBUF_ATTRIBUTE_REINITIALIZES
- #endif
- // The minimum library version which works with the current version of the
- // headers.
- #define GOOGLE_PROTOBUF_MIN_LIBRARY_VERSION 3018000
- #ifdef PROTOBUF_RTTI
- #error PROTOBUF_RTTI was previously defined
- #endif
- #if defined(GOOGLE_PROTOBUF_NO_RTTI) && GOOGLE_PROTOBUF_NO_RTTI
- #define PROTOBUF_RTTI 0
- #elif __has_feature(cxx_rtti)
- #define PROTOBUF_RTTI 1
- #elif defined(__cxx_rtti)
- // https://en.cppreference.com/w/User:D41D8CD98F/feature_testing_macros#C.2B.2B98
- #define PROTOBUF_RTTI 1
- #else
- #define PROTOBUF_RTTI 0
- #endif
- // Returns the offset of the given field within the given aggregate type.
- // This is equivalent to the ANSI C offsetof() macro. However, according
- // to the C++ standard, offsetof() only works on POD types, and GCC
- // enforces this requirement with a warning. In practice, this rule is
- // unnecessarily strict; there is probably no compiler or platform on
- // which the offsets of the direct fields of a class are non-constant.
- // Fields inherited from superclasses *can* have non-constant offsets,
- // but that's not what this macro will be used for.
- #ifdef PROTOBUF_FIELD_OFFSET
- #error PROTOBUF_FIELD_OFFSET was previously defined
- #endif
- #if defined(__clang__)
- // For Clang we use __builtin_offsetof() and suppress the warning,
- // to avoid Control Flow Integrity and UBSan vptr sanitizers from
- // crashing while trying to validate the invalid reinterpret_casts.
- #define PROTOBUF_FIELD_OFFSET(TYPE, FIELD) \
- _Pragma("clang diagnostic push") \
- _Pragma("clang diagnostic ignored \"-Winvalid-offsetof\"") \
- __builtin_offsetof(TYPE, FIELD) \
- _Pragma("clang diagnostic pop")
- #elif PROTOBUF_GNUC_MIN(4, 8)
- #define PROTOBUF_FIELD_OFFSET(TYPE, FIELD) __builtin_offsetof(TYPE, FIELD)
- #else // defined(__clang__)
- // Note that we calculate relative to the pointer value 16 here since if we
- // just use zero, GCC complains about dereferencing a NULL pointer. We
- // choose 16 rather than some other number just in case the compiler would
- // be confused by an unaligned pointer.
- #define PROTOBUF_FIELD_OFFSET(TYPE, FIELD) \
- static_cast< ::google::protobuf::uint32>(reinterpret_cast<const char*>( \
- &reinterpret_cast<const TYPE*>(16)->FIELD) - \
- reinterpret_cast<const char*>(16))
- #endif
- #ifdef PROTOBUF_EXPORT
- #error PROTOBUF_EXPORT was previously defined
- #endif
- #if defined(PROTOBUF_USE_DLLS) && defined(_MSC_VER)
- # if defined(LIBPROTOBUF_EXPORTS)
- # define PROTOBUF_EXPORT __declspec(dllexport)
- # define PROTOBUF_EXPORT_TEMPLATE_DECLARE
- # define PROTOBUF_EXPORT_TEMPLATE_DEFINE __declspec(dllexport)
- # else
- # define PROTOBUF_EXPORT __declspec(dllimport)
- # define PROTOBUF_EXPORT_TEMPLATE_DECLARE
- # define PROTOBUF_EXPORT_TEMPLATE_DEFINE __declspec(dllimport)
- # endif // defined(LIBPROTOBUF_EXPORTS)
- #elif defined(PROTOBUF_USE_DLLS) && defined(LIBPROTOBUF_EXPORTS)
- # define PROTOBUF_EXPORT __attribute__((visibility("default")))
- # define PROTOBUF_EXPORT_TEMPLATE_DECLARE __attribute__((visibility("default")))
- # define PROTOBUF_EXPORT_TEMPLATE_DEFINE
- #else
- # define PROTOBUF_EXPORT
- # define PROTOBUF_EXPORT_TEMPLATE_DECLARE
- # define PROTOBUF_EXPORT_TEMPLATE_DEFINE
- #endif
- #ifdef PROTOC_EXPORT
- #error PROTOC_EXPORT was previously defined
- #endif
- #if defined(PROTOBUF_USE_DLLS) && defined(_MSC_VER)
- # if defined(LIBPROTOC_EXPORTS)
- # define PROTOC_EXPORT __declspec(dllexport)
- # else
- # define PROTOC_EXPORT __declspec(dllimport)
- # endif // defined(LIBPROTOC_EXPORTS)
- #elif defined(PROTOBUF_USE_DLLS) && defined(LIBPROTOBUF_EXPORTS)
- # define PROTOC_EXPORT __attribute__((visibility("default")))
- #else
- # define PROTOC_EXPORT
- #endif
- #if defined(PROTOBUF_PREDICT_TRUE) || defined(PROTOBUF_PREDICT_FALSE)
- #error PROTOBUF_PREDICT_(TRUE|FALSE) was previously defined
- #endif
- #if PROTOBUF_GNUC_MIN(3, 0)
- # define PROTOBUF_PREDICT_TRUE(x) (__builtin_expect(false || (x), true))
- # define PROTOBUF_PREDICT_FALSE(x) (__builtin_expect(false || (x), false))
- #else
- # define PROTOBUF_PREDICT_TRUE(x) (x)
- # define PROTOBUF_PREDICT_FALSE(x) (x)
- #endif
- #ifdef PROTOBUF_MUST_USE_RESULT
- #error PROTOBUF_MUST_USE_RESULT was previously defined
- #endif
- # define PROTOBUF_MUST_USE_RESULT
- #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
- #error PROTOBUF_FORCE_COPY_IN_RELEASE was previously defined
- #endif
- #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
- #error PROTOBUF_FORCE_COPY_IN_SWAP was previously defined
- #endif
- #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
- #error PROTOBUF_FORCE_COPY_IN_MOVE was previously defined
- #endif
- #ifdef PROTOBUF_FALLTHROUGH_INTENDED
- #error PROTOBUF_FALLTHROUGH_INTENDED was previously defined
- #endif
- #if __has_cpp_attribute(fallthrough)
- #define PROTOBUF_FALLTHROUGH_INTENDED [[fallthrough]]
- #elif __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
- #define PROTOBUF_FALLTHROUGH_INTENDED [[clang::fallthrough]]
- #elif PROTOBUF_GNUC_MIN(7, 0)
- #define PROTOBUF_FALLTHROUGH_INTENDED [[gnu::fallthrough]]
- #else
- #define PROTOBUF_FALLTHROUGH_INTENDED
- #endif
- // PROTOBUF_ASSUME(pred) tells the compiler that it can assume pred is true. To
- // be safe, we also validate the assumption with a GOOGLE_DCHECK in unoptimized
- // builds. The macro does not do anything useful if the compiler does not
- // support __builtin_assume.
- #ifdef PROTOBUF_ASSUME
- #error PROTOBUF_ASSUME was previously defined
- #endif
- #if __has_builtin(__builtin_assume)
- #define PROTOBUF_ASSUME(pred) \
- GOOGLE_DCHECK(pred); \
- __builtin_assume(pred)
- #else
- #define PROTOBUF_ASSUME(pred) GOOGLE_DCHECK(pred)
- #endif
- // Specify memory alignment for structs, classes, etc.
- // Use like:
- // class PROTOBUF_ALIGNAS(16) MyClass { ... }
- // PROTOBUF_ALIGNAS(16) int array[4];
- //
- // In most places you can use the C++11 keyword "alignas", which is preferred.
- //
- // But compilers have trouble mixing __attribute__((...)) syntax with
- // alignas(...) syntax.
- //
- // Doesn't work in clang or gcc:
- // struct alignas(16) __attribute__((packed)) S { char c; };
- // Works in clang but not gcc:
- // struct __attribute__((packed)) alignas(16) S2 { char c; };
- // Works in clang and gcc:
- // struct alignas(16) S3 { char c; } __attribute__((packed));
- //
- // There are also some attributes that must be specified *before* a class
- // definition: visibility (used for exporting functions/classes) is one of
- // these attributes. This means that it is not possible to use alignas() with a
- // class that is marked as exported.
- #ifdef PROTOBUF_ALIGNAS
- #error PROTOBUF_ALIGNAS was previously defined
- #endif
- #if defined(_MSC_VER)
- #define PROTOBUF_ALIGNAS(byte_alignment) __declspec(align(byte_alignment))
- #elif PROTOBUF_GNUC_MIN(3, 0)
- #define PROTOBUF_ALIGNAS(byte_alignment) \
- __attribute__((aligned(byte_alignment)))
- #else
- #define PROTOBUF_ALIGNAS(byte_alignment) alignas(byte_alignment)
- #endif
- #ifdef PROTOBUF_FINAL
- #error PROTOBUF_FINAL was previously defined
- #endif
- #define PROTOBUF_FINAL final
- #ifdef PROTOBUF_THREAD_LOCAL
- #error PROTOBUF_THREAD_LOCAL was previously defined
- #endif
- #if defined(_MSC_VER)
- #define PROTOBUF_THREAD_LOCAL __declspec(thread)
- #else
- #define PROTOBUF_THREAD_LOCAL __thread
- #endif
- // For enabling message owned arena, one major blocker is semantic change from
- // moving to copying when there is ownership transfer (e.g., move ctor, swap,
- // set allocated, release). This change not only causes performance regression
- // but also breaks users code (e.g., dangling reference). For top-level
- // messages, since it owns the arena, we can mitigate the issue by transferring
- // ownership of arena. However, we cannot do that for nested messages. In order
- // to tell how many usages of nested messages affected by message owned arena,
- // we need to simulate the arena ownership.
- // This experiment is purely for the purpose of gathering data. All code guarded
- // by this flag is supposed to be removed after this experiment.
- #define PROTOBUF_MESSAGE_OWNED_ARENA_EXPERIMENT
- #ifdef PROTOBUF_CONSTINIT
- #error PROTOBUF_CONSTINIT was previously defined
- #endif
- #if defined(__cpp_constinit) && !PROTOBUF_GNUC_MIN(3, 0) && !defined(_MSC_VER)
- // Our use of constinit does not yet work with GCC:
- // https://github.com/protocolbuffers/protobuf/issues/8310
- // Does not work yet with Visual Studio 2019 Update 16.10
- #define PROTOBUF_CONSTINIT constinit
- #elif __has_cpp_attribute(clang::require_constant_initialization)
- #define PROTOBUF_CONSTINIT [[clang::require_constant_initialization]]
- #else
- #define PROTOBUF_CONSTINIT
- #endif
- // Some globals with an empty non-trivial destructor are annotated with
- // no_destroy for performance reasons. It reduces the cost of these globals in
- // non-opt mode and under sanitizers.
- #ifdef PROTOBUF_ATTRIBUTE_NO_DESTROY
- #error PROTOBUF_ATTRIBUTE_NO_DESTROY was previously defined
- #endif
- #if __has_cpp_attribute(clang::no_destroy)
- #define PROTOBUF_ATTRIBUTE_NO_DESTROY [[clang::no_destroy]]
- #else
- #define PROTOBUF_ATTRIBUTE_NO_DESTROY
- #endif
- // Protobuf extensions and reflection require registration of the protos linked
- // in the binary. Not until everything is registered does the runtime have a
- // complete view on all protos. When code is using reflection or extensions
- // in between registration calls this can lead to surprising behavior. By
- // having the registration run first we mitigate this scenario.
- // Highest priority is 101. We use 102 to allow code that really wants to
- // higher priority to still beat us.
- #ifdef PROTOBUF_ATTRIBUTE_INIT_PRIORITY
- #error PROTOBUF_ATTRIBUTE_INIT_PRIORITY was previously defined
- #endif
- #if PROTOBUF_GNUC_MIN(3, 0) && (!defined(__APPLE__) || defined(__clang__))
- #define PROTOBUF_ATTRIBUTE_INIT_PRIORITY __attribute__((init_priority((102))))
- #else
- #define PROTOBUF_ATTRIBUTE_INIT_PRIORITY
- #endif
- #ifdef PROTOBUF_PRAGMA_INIT_SEG
- #error PROTOBUF_PRAGMA_INIT_SEG was previously defined
- #endif
- #if _MSC_VER
- #define PROTOBUF_PRAGMA_INIT_SEG __pragma(init_seg(lib))
- #else
- #define PROTOBUF_PRAGMA_INIT_SEG
- #endif
- #ifdef PROTOBUF_ATTRIBUTE_WEAK
- #error PROTOBUF_ATTRIBUTE_WEAK was previously defined
- #endif
- #if __has_attribute(weak) && \
- !defined(__APPLE__) && \
- (!defined(_WIN32) || __clang_major__ < 9) && \
- !defined(__MINGW32__)
- #define PROTOBUF_ATTRIBUTE_WEAK __attribute__((weak))
- #define PROTOBUF_HAVE_ATTRIBUTE_WEAK 1
- #else
- #define PROTOBUF_ATTRIBUTE_WEAK
- #define PROTOBUF_HAVE_ATTRIBUTE_WEAK 0
- #endif
- // Macros to detect sanitizers.
- #ifdef PROTOBUF_ASAN
- #error PROTOBUF_ASAN was previously defined
- #endif
- #ifdef PROTOBUF_MSAN
- #error PROTOBUF_MSAN was previously defined
- #endif
- #ifdef PROTOBUF_TSAN
- #error PROTOBUF_TSAN was previously defined
- #endif
- #if defined(__clang__)
- # if __has_feature(address_sanitizer)
- # define PROTOBUF_ASAN 1
- # endif
- # if __has_feature(thread_sanitizer)
- # define PROTOBUF_TSAN 1
- # endif
- # if __has_feature(memory_sanitizer)
- # define PROTOBUF_MSAN 1
- # endif
- #elif PROTOBUF_GNUC_MIN(3, 0)
- # define PROTOBUF_ASAN __SANITIZE_ADDRESS__
- # define PROTOBUF_TSAN __SANITIZE_THREAD__
- #endif
- // Tail call table-driven parsing can be enabled by defining
- // PROTOBUF_EXPERIMENTAL_USE_TAIL_CALL_TABLE_PARSER at compilation time. Note
- // that this macro is for small-scale testing only, and is not supported.
- #ifdef PROTOBUF_TAIL_CALL_TABLE_PARSER_ENABLED
- #error PROTOBUF_TAIL_CALL_TABLE_PARSER_ENABLED was previously declared
- #endif
- #if defined(PROTOBUF_EXPERIMENTAL_USE_TAIL_CALL_TABLE_PARSER)
- #define PROTOBUF_TAIL_CALL_TABLE_PARSER_ENABLED 1
- // Selectively use static member functions instead of templates:
- #ifndef PROTOBUF_TC_STATIC_PARSE_SINGULAR1
- # define PROTOBUF_TC_STATIC_PARSE_SINGULAR1 1
- #endif
- #ifndef PROTOBUF_TC_STATIC_PARSE_SINGULAR2
- # define PROTOBUF_TC_STATIC_PARSE_SINGULAR2 0
- #endif
- #ifndef PROTOBUF_TC_STATIC_PARSE_REPEATED1
- # define PROTOBUF_TC_STATIC_PARSE_REPEATED1 0
- #endif
- #ifndef PROTOBUF_TC_STATIC_PARSE_REPEATED2
- # define PROTOBUF_TC_STATIC_PARSE_REPEATED2 0
- #endif
- #endif
- #define PROTOBUF_TC_PARAM_DECL \
- ::google::protobuf::MessageLite *msg, const char *ptr, \
- ::google::protobuf::internal::ParseContext *ctx, \
- const ::google::protobuf::internal::TailCallParseTableBase *table, \
- uint64_t hasbits, ::google::protobuf::internal::TcFieldData data
- #ifdef PROTOBUF_UNUSED
- #error PROTOBUF_UNUSED was previously defined
- #endif
- #if __has_cpp_attribute(maybe_unused) || \
- (PROTOBUF_MSC_VER_MIN(1911) && PROTOBUF_CPLUSPLUS_MIN(201703L))
- #define PROTOBUF_UNUSED [[maybe_unused]]
- #elif __has_attribute(unused) || PROTOBUF_GNUC_MIN(3, 0)
- #define PROTOBUF_UNUSED __attribute__((__unused__))
- #else
- #define PROTOBUF_UNUSED
- #endif
- // Windows declares several inconvenient macro names. We #undef them and then
- // restore them in port_undef.inc.
- #ifdef _MSC_VER
- #pragma push_macro("CREATE_NEW")
- #undef CREATE_NEW
- #pragma push_macro("DELETE")
- #undef DELETE
- #pragma push_macro("DOUBLE_CLICK")
- #undef DOUBLE_CLICK
- #pragma push_macro("ERROR")
- #undef ERROR
- #pragma push_macro("ERROR_BUSY")
- #undef ERROR_BUSY
- #pragma push_macro("ERROR_INSTALL_FAILED")
- #undef ERROR_INSTALL_FAILED
- #pragma push_macro("ERROR_NOT_FOUND")
- #undef ERROR_NOT_FOUND
- #pragma push_macro("GetMessage")
- #undef GetMessage
- #pragma push_macro("IGNORE")
- #undef IGNORE
- #pragma push_macro("IN")
- #undef IN
- #pragma push_macro("INPUT_KEYBOARD")
- #undef INPUT_KEYBOARD
- #pragma push_macro("NO_ERROR")
- #undef NO_ERROR
- #pragma push_macro("OUT")
- #undef OUT
- #pragma push_macro("OPTIONAL")
- #undef OPTIONAL
- #pragma push_macro("min")
- #undef min
- #pragma push_macro("max")
- #undef max
- #pragma push_macro("NEAR")
- #undef NEAR
- #pragma push_macro("NO_DATA")
- #undef NO_DATA
- #pragma push_macro("REASON_UNKNOWN")
- #undef REASON_UNKNOWN
- #pragma push_macro("SERVICE_DISABLED")
- #undef SERVICE_DISABLED
- #pragma push_macro("SEVERITY_ERROR")
- #undef SEVERITY_ERROR
- #pragma push_macro("STRICT")
- #undef STRICT
- #pragma push_macro("timezone")
- #undef timezone
- #endif // _MSC_VER
- #if defined(__clang__) || PROTOBUF_GNUC_MIN(3, 0) || defined(_MSC_VER)
- // Don't let Objective-C Macros interfere with proto identifiers with the same
- // name.
- #pragma push_macro("DEBUG")
- #undef DEBUG
- #endif // defined(__clang__) || PROTOBUF_GNUC_MIN(3, 0) || defined(_MSC_VER)
- #if defined(__clang__)
- #pragma clang diagnostic push
- // TODO(gerbens) ideally we cleanup the code. But a cursory try shows many
- // violations. So let's ignore for now.
- #pragma clang diagnostic ignored "-Wshorten-64-to-32"
- #elif PROTOBUF_GNUC_MIN(3, 0)
- // GCC does not allow disabling diagnostics within an expression:
- // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60875, so we disable this one
- // globally even though it's only used for PROTOBUF_FIELD_OFFSET.
- #pragma GCC diagnostic push
- #pragma GCC diagnostic ignored "-Winvalid-offsetof"
- #endif
- // Silence some MSVC warnings in all our code.
- #if _MSC_VER
- #pragma warning(push)
- // For non-trivial unions
- #pragma warning(disable : 4582)
- #pragma warning(disable : 4583)
- // For init_seg(lib)
- #pragma warning(disable : 4073)
- // To silence the fact that we will pop this push from another file
- #pragma warning(disable : 5031)
- #endif
- // We don't want code outside port_def doing complex testing, so
- // remove our portable condition test macros to nudge folks away from
- // using it themselves.
- #ifdef PROTOBUF_has_cpp_attribute_DEFINED_
- # undef __has_cpp_attribute
- # undef PROTOBUF_has_cpp_attribute_DEFINED_
- #endif
- #ifdef PROTOBUF_has_feature_DEFINED_
- # undef __has_feature
- # undef PROTOBUF_has_feature_DEFINED_
- #endif
- #ifdef PROTOBUF_has_warning_DEFINED_
- # undef __has_warning
- # undef PROTOBUF_has_warning_DEFINED_
- #endif
- #ifdef PROTOBUF_has_attribute_DEFINED_
- # undef __has_attribute
- # undef PROTOBUF_has_attribute_DEFINED_
- #endif
- #ifdef PROTOBUF_has_builtin_DEFINED_
- # undef __has_builtin
- # undef PROTOBUF_has_builtin_DEFINED_
- #endif
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