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a83128739983c83eaf1ba4c2bc0e3aa570082d15
libcxx/test/support/test_macros.h
Eric Fiselier a831287399 Fix PR22634 - std::allocator doesn't respect over-aligned types. 
This patch fixes std::allocator, and more specifically, all users
of __libcpp_allocate and __libcpp_deallocate, to support over-aligned
types.

__libcpp_allocate/deallocate now take an alignment parameter, and when
the specified alignment is greater than that supported by malloc/new,
the aligned version of operator new is called (assuming it's available).

When aligned new isn't available, the old behavior has been kept, and the
alignment parameter is ignored.

This patch depends on recent changes to __builtin_operator_new/delete which
allow them to be used to call any regular new/delete operator. By using
__builtin_operator_new/delete when possible, the new/delete erasure optimization
is maintained.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@328180 91177308-0d34-0410-b5e6-96231b3b80d8
2018-03-22 04:42:56 +00:00

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// -*- C++ -*-
//===---------------------------- test_macros.h ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef SUPPORT_TEST_MACROS_HPP
#define SUPPORT_TEST_MACROS_HPP
#include <ciso646> // Get STL specific macros like _LIBCPP_VERSION
#if defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wvariadic-macros"
#endif
#define TEST_CONCAT1(X, Y) X##Y
#define TEST_CONCAT(X, Y) TEST_CONCAT1(X, Y)
#ifdef __has_feature
#define TEST_HAS_FEATURE(X) __has_feature(X)
#else
#define TEST_HAS_FEATURE(X) 0
#endif
#ifdef __has_include
#define TEST_HAS_INCLUDE(X) __has_include(X)
#else
#define TEST_HAS_INCLUDE(X) 0
#endif
#ifdef __has_extension
#define TEST_HAS_EXTENSION(X) __has_extension(X)
#else
#define TEST_HAS_EXTENSION(X) 0
#endif
#ifdef __has_builtin
#define TEST_HAS_BUILTIN(X) __has_builtin(X)
#else
#define TEST_HAS_BUILTIN(X) 0
#endif
#ifdef __is_identifier
// '__is_identifier' returns '0' if '__x' is a reserved identifier provided by
// the compiler and '1' otherwise.
#define TEST_HAS_BUILTIN_IDENTIFIER(X) !__is_identifier(X)
#else
#define TEST_HAS_BUILTIN_IDENTIFIER(X) 0
#endif
#if defined(__EDG__)
# define TEST_COMPILER_EDG
#elif defined(__clang__)
# define TEST_COMPILER_CLANG
# if defined(__apple_build_version__)
# define TEST_COMPILER_APPLE_CLANG
# endif
#elif defined(_MSC_VER)
# define TEST_COMPILER_C1XX
#elif defined(__GNUC__)
# define TEST_COMPILER_GCC
#endif
#if defined(__apple_build_version__)
#define TEST_APPLE_CLANG_VER (__clang_major__ * 100) + __clang_minor__
#elif defined(__clang_major__)
#define TEST_CLANG_VER (__clang_major__ * 100) + __clang_minor__
#elif defined(__GNUC__)
#define TEST_GCC_VER (__GNUC__ * 100 + __GNUC_MINOR__)
#endif
/* Make a nice name for the standard version */
#ifndef TEST_STD_VER
#if __cplusplus <= 199711L
# define TEST_STD_VER 3
#elif __cplusplus <= 201103L
# define TEST_STD_VER 11
#elif __cplusplus <= 201402L
# define TEST_STD_VER 14
#elif __cplusplus <= 201703L
# define TEST_STD_VER 17
#else
# define TEST_STD_VER 99 // greater than current standard
// This is deliberately different than _LIBCPP_STD_VER to discourage matching them up.
#endif
#endif
// Attempt to deduce GCC version
#if defined(_LIBCPP_VERSION) && TEST_HAS_INCLUDE(<features.h>)
#include <features.h>
#define TEST_HAS_GLIBC
#define TEST_GLIBC_PREREQ(major, minor) __GLIBC_PREREQ(major, minor)
#endif
/* Features that were introduced in C++14 */
#if TEST_STD_VER >= 14
#define TEST_HAS_EXTENDED_CONSTEXPR
#define TEST_HAS_VARIABLE_TEMPLATES
#endif
/* Features that were introduced after C++14 */
#if TEST_STD_VER > 14
#endif
#if TEST_STD_VER >= 11
#define TEST_ALIGNOF(...) alignof(__VA_ARGS__)
#define TEST_ALIGNAS(...) alignas(__VA_ARGS__)
#define TEST_CONSTEXPR constexpr
#define TEST_NOEXCEPT noexcept
#define TEST_NOEXCEPT_FALSE noexcept(false)
#define TEST_NOEXCEPT_COND(...) noexcept(__VA_ARGS__)
# if TEST_STD_VER >= 14
# define TEST_CONSTEXPR_CXX14 constexpr
# else
# define TEST_CONSTEXPR_CXX14
# endif
# if TEST_STD_VER > 14
# define TEST_THROW_SPEC(...)
# else
# define TEST_THROW_SPEC(...) throw(__VA_ARGS__)
# endif
#else
#define TEST_ALIGNOF(...) __alignof(__VA_ARGS__)
#define TEST_ALIGNAS(...) __attribute__((__aligned__(__VA_ARGS__)))
#define TEST_CONSTEXPR
#define TEST_CONSTEXPR_CXX14
#define TEST_NOEXCEPT throw()
#define TEST_NOEXCEPT_FALSE
#define TEST_NOEXCEPT_COND(...)
#define TEST_THROW_SPEC(...) throw(__VA_ARGS__)
#endif
#define TEST_ALIGNAS_TYPE(...) TEST_ALIGNAS(TEST_ALIGNOF(__VA_ARGS__))
#if !TEST_HAS_FEATURE(cxx_rtti) && !defined(__cpp_rtti) \
&& !defined(__GXX_RTTI)
#define TEST_HAS_NO_RTTI
#endif
#if !TEST_HAS_FEATURE(cxx_exceptions) && !defined(__cpp_exceptions) \
&& !defined(__EXCEPTIONS)
#define TEST_HAS_NO_EXCEPTIONS
#endif
#if TEST_HAS_FEATURE(address_sanitizer) || TEST_HAS_FEATURE(memory_sanitizer) || \
TEST_HAS_FEATURE(thread_sanitizer)
#define TEST_HAS_SANITIZERS
#endif
#if defined(_LIBCPP_NORETURN)
#define TEST_NORETURN _LIBCPP_NORETURN
#else
#define TEST_NORETURN [[noreturn]]
#endif
#if !defined(__cpp_aligned_new) || __cpp_aligned_new < 201606L || \
defined(_LIBCPP_HAS_NO_ALIGNED_ALLOCATION)
#define TEST_HAS_NO_ALIGNED_ALLOCATION
#endif
#if defined(_LIBCPP_SAFE_STATIC)
#define TEST_SAFE_STATIC _LIBCPP_SAFE_STATIC
#else
#define TEST_SAFE_STATIC
#endif
#if TEST_STD_VER < 11
#define ASSERT_NOEXCEPT(...)
#define ASSERT_NOT_NOEXCEPT(...)
#else
#define ASSERT_NOEXCEPT(...) \
static_assert(noexcept(__VA_ARGS__), "Operation must be noexcept")
#define ASSERT_NOT_NOEXCEPT(...) \
static_assert(!noexcept(__VA_ARGS__), "Operation must NOT be noexcept")
#endif
/* Macros for testing libc++ specific behavior and extensions */
#if defined(_LIBCPP_VERSION)
#define LIBCPP_ASSERT(...) assert(__VA_ARGS__)
#define LIBCPP_STATIC_ASSERT(...) static_assert(__VA_ARGS__)
#define LIBCPP_ASSERT_NOEXCEPT(...) ASSERT_NOEXCEPT(__VA_ARGS__)
#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ASSERT_NOT_NOEXCEPT(__VA_ARGS__)
#define LIBCPP_ONLY(...) __VA_ARGS__
#else
#define LIBCPP_ASSERT(...) ((void)0)
#define LIBCPP_STATIC_ASSERT(...) ((void)0)
#define LIBCPP_ASSERT_NOEXCEPT(...) ((void)0)
#define LIBCPP_ASSERT_NOT_NOEXCEPT(...) ((void)0)
#define LIBCPP_ONLY(...) ((void)0)
#endif
#define TEST_IGNORE_NODISCARD (void)
namespace test_macros_detail {
template <class T, class U>
struct is_same { enum { value = 0};} ;
template <class T>
struct is_same<T, T> { enum {value = 1}; };
} // namespace test_macros_detail
#define ASSERT_SAME_TYPE(...) \
static_assert((test_macros_detail::is_same<__VA_ARGS__>::value), \
"Types differ unexpectedly")
#ifndef TEST_HAS_NO_EXCEPTIONS
#define TEST_THROW(...) throw __VA_ARGS__
#else
#if defined(__GNUC__)
#define TEST_THROW(...) __builtin_abort()
#else
#include <stdlib.h>
#define TEST_THROW(...) ::abort()
#endif
#endif
#if defined(__GNUC__) || defined(__clang__)
template <class Tp>
inline void DoNotOptimize(Tp const& value) {
asm volatile("" : : "g"(value) : "memory");
}
#else
#include <intrin.h>
template <class Tp>
inline void DoNotOptimize(Tp const& value) {
const volatile void* volatile unused = __builtin_addressof(value);
static_cast<void>(unused);
_ReadWriteBarrier();
}
#endif
#if defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
#endif // SUPPORT_TEST_MACROS_HPP
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