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-rw-r--r--src/corelib/global/qcompilerdetection.h340
1 files changed, 292 insertions, 48 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h
index c3b0611018..673f1c795b 100644
--- a/src/corelib/global/qcompilerdetection.h
+++ b/src/corelib/global/qcompilerdetection.h
@@ -2,16 +2,24 @@
// Copyright (C) 2016 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
-#ifndef QGLOBAL_H
-# include <QtCore/qglobal.h>
+#include <QtCore/qsystemdetection.h>
+
+#if 0
+#pragma qt_class(QtCompilerDetection)
+#pragma qt_sync_skip_header_check
+#pragma qt_sync_stop_processing
#endif
#ifndef QCOMPILERDETECTION_H
#define QCOMPILERDETECTION_H
+#include <QtCore/qprocessordetection.h>
+#include <QtCore/qtconfiginclude.h>
+
/*
The compiler, must be one of: (Q_CC_x)
+ COVERITY - Coverity cov-scan
SYM - Digital Mars C/C++ (used to be Symantec C++)
MSVC - Microsoft Visual C/C++, Intel C++ for Windows
BOR - Borland/Turbo C++
@@ -38,6 +46,11 @@
Should be sorted most to least authoritative.
*/
+#if defined(__COVERITY__)
+# define Q_CC_COVERITY
+# define Q_COMPILER_COMPLAINS_ABOUT_RETURN_AFTER_UNREACHABLE
+#endif
+
/* Symantec C++ is now Digital Mars */
#if defined(__DMC__) || defined(__SC__)
# define Q_CC_SYM
@@ -57,17 +70,16 @@
# endif
# define Q_OUTOFLINE_TEMPLATE inline
# define Q_COMPILER_MANGLES_RETURN_TYPE
+# define Q_COMPILER_MANGLES_ACCESS_SPECIFIER
# define Q_FUNC_INFO __FUNCSIG__
# define Q_ASSUME_IMPL(expr) __assume(expr)
# define Q_UNREACHABLE_IMPL() __assume(0)
# define Q_DECL_EXPORT __declspec(dllexport)
# define Q_DECL_IMPORT __declspec(dllimport)
-# define QT_MAKE_UNCHECKED_ARRAY_ITERATOR(x) stdext::make_unchecked_array_iterator(x) // Since _MSC_VER >= 1800
-# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) stdext::make_checked_array_iterator(x, size_t(N)) // Since _MSC_VER >= 1500
-# undef Q_CC_MSVC_ONLY
-# ifdef Q_CC_CLANG_ONLY
-# undef Q_CC_CLANG_ONLY
-# endif
+# if _MSC_VER < 1938 // stdext is deprecated since VS 2022 17.8
+# define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) stdext::make_checked_array_iterator(x, size_t(N)) // Since _MSC_VER >= 1500
+# endif
+# define Q_COMPILER_COMPLAINS_ABOUT_RETURN_AFTER_UNREACHABLE
#elif defined(__BORLANDC__) || defined(__TURBOC__)
# define Q_CC_BOR
@@ -111,7 +123,11 @@
// define to verify the Clang version we hard-code the versions
// based on the best available info we have about the actual
// version: http://en.wikipedia.org/wiki/Xcode#Toolchain_Versions
-# if __apple_build_version__ >= 13160021 // Xcode 13.3
+# if __apple_build_version__ >= 14030022 // Xcode 14.3
+# define Q_CC_CLANG 1500
+# elif __apple_build_version__ >= 14000029 // Xcode 14.0
+# define Q_CC_CLANG 1400
+# elif __apple_build_version__ >= 13160021 // Xcode 13.3
# define Q_CC_CLANG 1300
# elif __apple_build_version__ >= 13000029 // Xcode 13.0
# define Q_CC_CLANG 1200
@@ -164,7 +180,7 @@
# ifdef Q_OS_WIN
# define Q_DECL_EXPORT __declspec(dllexport)
# define Q_DECL_IMPORT __declspec(dllimport)
-# elif defined(QT_VISIBILITY_AVAILABLE)
+# else
# define Q_DECL_EXPORT_OVERRIDABLE __attribute__((visibility("default"), weak))
# ifdef QT_USE_PROTECTED_VISIBILITY
# define Q_DECL_EXPORT __attribute__((visibility("protected")))
@@ -220,7 +236,6 @@
but it is not defined on older compilers like C Set 3.1 */
#elif defined(__xlC__)
# define Q_CC_XLC
-# define Q_FULL_TEMPLATE_INSTANTIATION
# if __xlC__ < 0x400
# error "Compiler not supported"
# elif __xlC__ >= 0x0600
@@ -436,13 +451,21 @@
# define __has_include_next(x) 0
#endif
-// Kept around until all submodules have transitioned
-#define QT_HAS_BUILTIN(x) __has_builtin(x)
-#define QT_HAS_FEATURE(x) __has_feature(x)
-#define QT_HAS_ATTRIBUTE(x) __has_attribute(x)
-#define QT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
-#define QT_HAS_INCLUDE(x) __has_include(x)
-#define QT_HAS_INCLUDE_NEXT(x) __has_include_next(x)
+/*
+ detecting ASAN can be helpful to disable slow tests
+ clang uses feature, gcc defines __SANITIZE_ADDRESS__
+ unconditionally check both in case other compilers mirror
+ either of those options
+ */
+#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
+# define QT_ASAN_ENABLED
+#endif
+
+#ifdef __cplusplus
+# if __has_include(<version>) /* remove this check once Integrity, QNX have caught up */
+# include <version>
+# endif
+#endif
/*
* C++11 support
@@ -484,9 +507,14 @@
* N1653 Q_COMPILER_VARIADIC_MACROS
* N2242 N2555 Q_COMPILER_VARIADIC_TEMPLATES __cpp_variadic_templates = 200704
*
- * For any future version of the C++ standard, we use only the SD-6 macro.
- * For full listing, see
- * http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
+ *
+ * For the C++ standards C++14 and C++17, we use only the SD-6 macro.
+ *
+ * For any future version of the C++ standard, we use only the C++20 feature test macro.
+ * For library features, we assume <version> is present (this header includes it).
+ *
+ * For a full listing of feature test macros, see
+ * https://en.cppreference.com/w/cpp/feature_test
*
* C++ extensions:
* Q_COMPILER_RESTRICTED_VLA variable-length arrays, prior to __cpp_runtime_arrays
@@ -520,7 +548,8 @@
# endif
/* C++11 features, see http://clang.llvm.org/cxx_status.html */
-# if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
+# if (defined(__cplusplus) && __cplusplus >= 201103L) \
+ || defined(__GXX_EXPERIMENTAL_CXX0X__)
/* Detect C++ features using __has_feature(), see http://clang.llvm.org/docs/LanguageExtensions.html#cxx11 */
# if __has_feature(cxx_alignas)
# define Q_COMPILER_ALIGNAS
@@ -618,10 +647,10 @@
# if Q_CC_CLANG >= 209 /* since clang 2.9 */
# define Q_COMPILER_EXTERN_TEMPLATES
# endif
-# endif
+# endif // (defined(__cplusplus) && __cplusplus >= 201103L) || defined(__GXX_EXPERIMENTAL_CXX0X__)
/* C++1y features, deprecated macros. Do not update this list. */
-# if __cplusplus > 201103L
+# if defined(__cplusplus) && __cplusplus > 201103L
//# if __has_feature(cxx_binary_literals)
//# define Q_COMPILER_BINARY_LITERALS // see above
//# endif
@@ -643,7 +672,7 @@
# if __has_feature(cxx_runtime_array)
# define Q_COMPILER_VLA
# endif
-# endif
+# endif // if defined(__cplusplus) && __cplusplus > 201103L
# if defined(__STDC_VERSION__)
# if __has_feature(c_static_assert)
@@ -822,6 +851,13 @@
# if _MSC_VER >= 1910
# define Q_COMPILER_CONSTEXPR
# endif
+// MSVC versions before 19.36 have a bug in C++20 comparison implementation.
+// This leads to ambiguities when resolving comparison operator overloads in
+// certain scenarios (the buggy MSVC versions were checked using our CI and
+// compiler explorer).
+# if _MSC_VER < 1936
+# define Q_COMPILER_LACKS_THREE_WAY_COMPARE_SYMMETRY
+# endif
# endif /* __cplusplus */
#endif // defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
@@ -867,16 +903,22 @@
# endif // !_HAS_CONSTEXPR
# endif // !__GLIBCXX__ && !_LIBCPP_VERSION
# endif // Q_OS_QNX
-# if defined(Q_CC_CLANG) && defined(Q_OS_MAC) && defined(__GNUC_LIBSTD__) \
- && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402)
+# if defined(Q_CC_CLANG) && defined(Q_OS_DARWIN)
+# if defined(__GNUC_LIBSTD__) && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402)
// Apple has not updated libstdc++ since 2007, which means it does not have
// <initializer_list> or std::move. Let's disable these features
-# undef Q_COMPILER_INITIALIZER_LISTS
-# undef Q_COMPILER_RVALUE_REFS
-# undef Q_COMPILER_REF_QUALIFIERS
+# undef Q_COMPILER_INITIALIZER_LISTS
+# undef Q_COMPILER_RVALUE_REFS
+# undef Q_COMPILER_REF_QUALIFIERS
// Also disable <atomic>, since it's clearly not there
-# undef Q_COMPILER_ATOMICS
-# endif
+# undef Q_COMPILER_ATOMICS
+# endif
+# if defined(__cpp_lib_memory_resource) \
+ && ((defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED < 140000) \
+ || (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED < 170000))
+# undef __cpp_lib_memory_resource // Only supported on macOS 14 and iOS 17
+# endif
+# endif // defined(Q_CC_CLANG) && defined(Q_OS_DARWIN)
#endif
// Don't break code that is already using Q_COMPILER_DEFAULT_DELETE_MEMBERS
@@ -922,6 +964,20 @@
# define Q_REQUIRED_RESULT [[nodiscard]]
#endif
+#if __has_cpp_attribute(nodiscard) >= 201907L /* used for both P1771 and P1301... */
+// [[nodiscard]] constructor (P1771)
+# ifndef Q_NODISCARD_CTOR
+# define Q_NODISCARD_CTOR [[nodiscard]]
+# endif
+// [[nodiscard("reason")]] (P1301)
+# ifndef Q_NODISCARD_X
+# define Q_NODISCARD_X(message) [[nodiscard(message)]]
+# endif
+# ifndef Q_NODISCARD_CTOR_X
+# define Q_NODISCARD_CTOR_X(message) [[nodiscard(message)]]
+# endif
+#endif
+
#if __has_cpp_attribute(maybe_unused)
# undef Q_DECL_UNUSED
# define Q_DECL_UNUSED [[maybe_unused]]
@@ -971,6 +1027,15 @@
#ifndef Q_REQUIRED_RESULT
# define Q_REQUIRED_RESULT
#endif
+#ifndef Q_NODISCARD_X
+# define Q_NODISCARD_X(message) Q_REQUIRED_RESULT
+#endif
+#ifndef Q_NODISCARD_CTOR
+# define Q_NODISCARD_CTOR
+#endif
+#ifndef Q_NODISCARD_CTOR_X
+# define Q_NODISCARD_CTOR_X(message) Q_NODISCARD_CTOR
+#endif
#ifndef Q_DECL_DEPRECATED
# define Q_DECL_DEPRECATED
#endif
@@ -1031,7 +1096,11 @@
* "Weak overloads" - makes an otherwise confliciting overload weaker
* (by making it a template)
*/
-#define Q_WEAK_OVERLOAD template <typename = void>
+#ifndef Q_QDOC
+# define Q_WEAK_OVERLOAD template <typename = void>
+#else
+# define Q_WEAK_OVERLOAD
+#endif
/*
* If one wants to add functions that use post-C++17 APIs, one needs to:
@@ -1051,7 +1120,11 @@
* The workaround: declare such functions as function templates.
* (Obviously a function template does not need this marker.)
*/
-#define QT_POST_CXX17_API_IN_EXPORTED_CLASS template <typename = void>
+#ifndef Q_QDOC
+# define QT_POST_CXX17_API_IN_EXPORTED_CLASS template <typename = void>
+#else
+# define QT_POST_CXX17_API_IN_EXPORTED_CLASS
+#endif
/*
* Warning/diagnostic handling
@@ -1110,6 +1183,20 @@
QT_WARNING_POP
#endif
+// The body must be a statement:
+#define Q_CAST_IGNORE_ALIGN(body) QT_WARNING_PUSH QT_WARNING_DISABLE_GCC("-Wcast-align") body QT_WARNING_POP
+
+// This macro can be used to calculate member offsets for types with a non standard layout.
+// It uses the fact that offsetof() is allowed to support those types since C++17 as an optional
+// feature. All our compilers do support this, but some issue a warning, so we wrap the offsetof()
+// call in a macro that disables the compiler warning.
+#define Q_OFFSETOF(Class, member) \
+ []() -> size_t { \
+ QT_WARNING_PUSH QT_WARNING_DISABLE_INVALID_OFFSETOF \
+ return offsetof(Class, member); \
+ QT_WARNING_POP \
+ }()
+
/*
Proper for-scoping in MIPSpro CC
*/
@@ -1125,18 +1212,6 @@
#define qMove(x) (x)
#endif
-#define Q_UNREACHABLE() \
- do {\
- Q_ASSERT_X(false, "Q_UNREACHABLE()", "Q_UNREACHABLE was reached");\
- Q_UNREACHABLE_IMPL();\
- } while (false)
-
-#define Q_ASSUME(Expr) \
- [] (bool valueOfExpression) {\
- Q_ASSERT_X(valueOfExpression, "Q_ASSUME()", "Assumption in Q_ASSUME(\"" #Expr "\") was not correct");\
- Q_ASSUME_IMPL(valueOfExpression);\
- }(Expr)
-
#if defined(__cplusplus)
#if __has_cpp_attribute(clang::fallthrough)
# define Q_FALLTHROUGH() [[clang::fallthrough]]
@@ -1147,11 +1222,11 @@
#endif
#endif
#ifndef Q_FALLTHROUGH
-# if defined(Q_CC_GNU_ONLY) && Q_CC_GNU >= 700
+# ifdef Q_CC_GNU
# define Q_FALLTHROUGH() __attribute__((fallthrough))
# else
# define Q_FALLTHROUGH() (void)0
-#endif
+# endif
#endif
@@ -1176,4 +1251,173 @@
# undef QT_COMPILER_SUPPORTS_MIPS_DSPR2
#endif
+// Compiler version check
+#if defined(__cplusplus) && (__cplusplus < 201703L)
+# ifdef Q_CC_MSVC
+# error "Qt requires a C++17 compiler, and a suitable value for __cplusplus. On MSVC, you must pass the /Zc:__cplusplus option to the compiler."
+# else
+# error "Qt requires a C++17 compiler"
+# endif
+#endif // __cplusplus
+
+#if defined(__cplusplus) && defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
+# if Q_CC_MSVC < 1927
+ // Check below only works with 16.7 or newer
+# error "Qt requires at least Visual Studio 2019 version 16.7 (VC++ version 14.27). Please upgrade."
+# endif
+
+// On MSVC we require /permissive- set by user code. Check that we are
+// under its rules -- for instance, check that std::nullptr_t->bool is
+// not an implicit conversion, as per
+// https://docs.microsoft.com/en-us/cpp/overview/cpp-conformance-improvements?view=msvc-160#nullptr_t-is-only-convertible-to-bool-as-a-direct-initialization
+static_assert(!std::is_convertible_v<std::nullptr_t, bool>,
+ "On MSVC you must pass the /permissive- option to the compiler.");
+#endif
+
+#if defined(QT_BOOTSTRAPPED) || defined(QT_USE_PROTECTED_VISIBILITY) || !defined(__ELF__) || defined(__PIC__)
+// this is fine
+#elif defined(QT_REDUCE_RELOCATIONS)
+# error "You must build your code with position independent code if Qt was configured with -reduce-relocations. "\
+ "Compile your code with -fPIC (and not with -fPIE)."
+#endif
+
+#ifdef Q_PROCESSOR_X86_32
+# if defined(Q_CC_GNU)
+# define QT_FASTCALL __attribute__((regparm(3)))
+# elif defined(Q_CC_MSVC)
+# define QT_FASTCALL __fastcall
+# else
+# define QT_FASTCALL
+# endif
+#else
+# define QT_FASTCALL
+#endif
+
+// enable gcc warnings for printf-style functions
+#if defined(Q_CC_GNU) && !defined(__INSURE__)
+# if defined(Q_CC_MINGW) && !defined(Q_CC_CLANG)
+# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B) \
+ __attribute__((format(gnu_printf, (A), (B))))
+# else
+# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B) \
+ __attribute__((format(printf, (A), (B))))
+# endif
+#else
+# define Q_ATTRIBUTE_FORMAT_PRINTF(A, B)
+#endif
+
+#ifdef Q_CC_MSVC
+# define Q_NEVER_INLINE __declspec(noinline)
+# define Q_ALWAYS_INLINE __forceinline
+#elif defined(Q_CC_GNU)
+# define Q_NEVER_INLINE __attribute__((noinline))
+# define Q_ALWAYS_INLINE inline __attribute__((always_inline))
+#else
+# define Q_NEVER_INLINE
+# define Q_ALWAYS_INLINE inline
+#endif
+
+//defines the type for the WNDPROC on windows
+//the alignment needs to be forced for sse2 to not crash with mingw
+#if defined(Q_OS_WIN)
+# if defined(Q_CC_MINGW) && defined(Q_PROCESSOR_X86_32)
+# define QT_ENSURE_STACK_ALIGNED_FOR_SSE __attribute__ ((force_align_arg_pointer))
+# else
+# define QT_ENSURE_STACK_ALIGNED_FOR_SSE
+# endif
+# define QT_WIN_CALLBACK CALLBACK QT_ENSURE_STACK_ALIGNED_FOR_SSE
+#endif
+
+#ifdef __cpp_conditional_explicit
+#define Q_IMPLICIT explicit(false)
+#else
+#define Q_IMPLICIT
+#endif
+
+#if defined(__cplusplus)
+
+#ifdef __cpp_constinit
+# if defined(Q_CC_MSVC) && !defined(Q_CC_CLANG)
+ // https://developercommunity.visualstudio.com/t/C:-constinit-for-an-optional-fails-if-/1406069
+# define Q_CONSTINIT
+# else
+# define Q_CONSTINIT constinit
+# endif
+#elif defined(__has_cpp_attribute) && __has_cpp_attribute(clang::require_constant_initialization)
+# define Q_CONSTINIT [[clang::require_constant_initialization]]
+#elif defined(Q_CC_GNU_ONLY) && Q_CC_GNU >= 1000
+# define Q_CONSTINIT __constinit
+#else
+# define Q_CONSTINIT
+#endif
+
+#ifndef Q_OUTOFLINE_TEMPLATE
+# define Q_OUTOFLINE_TEMPLATE
+#endif
+#ifndef Q_INLINE_TEMPLATE
+# define Q_INLINE_TEMPLATE inline
+#endif
+
+/*
+ Avoid some particularly useless warnings from some stupid compilers.
+ To get ALL C++ compiler warnings, define QT_CC_WARNINGS or comment out
+ the line "#define QT_NO_WARNINGS". See also QTBUG-26877.
+*/
+#if !defined(QT_CC_WARNINGS)
+# define QT_NO_WARNINGS
+#endif
+#if defined(QT_NO_WARNINGS)
+# if defined(Q_CC_MSVC)
+QT_WARNING_DISABLE_MSVC(4251) /* class 'type' needs to have dll-interface to be used by clients of class 'type2' */
+QT_WARNING_DISABLE_MSVC(4244) /* conversion from 'type1' to 'type2', possible loss of data */
+QT_WARNING_DISABLE_MSVC(4275) /* non - DLL-interface classkey 'identifier' used as base for DLL-interface classkey 'identifier' */
+QT_WARNING_DISABLE_MSVC(4514) /* unreferenced inline function has been removed */
+QT_WARNING_DISABLE_MSVC(4800) /* 'type' : forcing value to bool 'true' or 'false' (performance warning) */
+QT_WARNING_DISABLE_MSVC(4097) /* typedef-name 'identifier1' used as synonym for class-name 'identifier2' */
+QT_WARNING_DISABLE_MSVC(4706) /* assignment within conditional expression */
+QT_WARNING_DISABLE_MSVC(4355) /* 'this' : used in base member initializer list */
+QT_WARNING_DISABLE_MSVC(4710) /* function not inlined */
+QT_WARNING_DISABLE_MSVC(4530) /* C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc */
+# elif defined(Q_CC_BOR)
+# pragma option -w-inl
+# pragma option -w-aus
+# pragma warn -inl
+# pragma warn -pia
+# pragma warn -ccc
+# pragma warn -rch
+# pragma warn -sig
+# endif
+#endif
+
+#if !defined(QT_NO_EXCEPTIONS)
+# if !defined(Q_MOC_RUN)
+# if defined(Q_CC_GNU) && !defined(__cpp_exceptions)
+# define QT_NO_EXCEPTIONS
+# endif
+# elif defined(QT_BOOTSTRAPPED)
+# define QT_NO_EXCEPTIONS
+# endif
+#endif
+
+// libstdc++ shipped with gcc < 11 does not have a fix for defect LWG 3346
+#if __cplusplus >= 202002L && (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE >= 11)
+# define QT_COMPILER_HAS_LWG3346
+#endif
+
+#if defined(__cplusplus) && __cplusplus >= 202002L // P0846 doesn't have a feature macro :/
+# define QT_COMPILER_HAS_P0846
+#endif
+
+#ifdef QT_COMPILER_HAS_P0846
+# define QT_ENABLE_P0846_SEMANTICS_FOR(func)
+#else
+ class QT_CLASS_JUST_FOR_P0846_SIMULATION;
+# define QT_ENABLE_P0846_SEMANTICS_FOR(func) \
+ template <typename T> \
+ void func (QT_CLASS_JUST_FOR_P0846_SIMULATION *); \
+ /* end */
+#endif // !P0846
+
+#endif // __cplusplus
+
#endif // QCOMPILERDETECTION_H