diff options
| author | Liang Qi <liang.qi@qt.io> | 2017-06-19 13:25:11 +0200 |
|---|---|---|
| committer | Liang Qi <liang.qi@qt.io> | 2017-06-19 16:12:34 +0200 |
| commit | ce09ef431373f45d14ce0a6e7de24aee3666093d (patch) | |
| tree | 7c998b21f02db55e233e7eeb1599663f1c6b51ca /src/corelib/global/qcompilerdetection.h | |
| parent | 7ad55ca65f42351e231f31f7a9253ae6eaf1ebb3 (diff) | |
| parent | 97eec16e4ff6367c233f8ea6c4a343c286c3a514 (diff) | |
Merge remote-tracking branch 'origin/5.9' into dev
Conflicts:
src/corelib/io/qprocess_unix.cpp
src/corelib/io/qprocess_win.cpp
src/plugins/platforms/android/qandroidplatformintegration.h
src/plugins/platforms/windows/qwindowscontext.cpp
src/plugins/platforms/windows/windows.pri
src/tools/uic/cpp/cppwriteinitialization.cpp
src/widgets/doc/src/widgets-and-layouts/gallery.qdoc
Change-Id: I8d0834c77f350ea7540140c2c7f372814afc2d0f
Diffstat (limited to 'src/corelib/global/qcompilerdetection.h')
| -rw-r--r-- | src/corelib/global/qcompilerdetection.h | 67 |
1 files changed, 36 insertions, 31 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h index c221115e8f..9ffd164b61 100644 --- a/src/corelib/global/qcompilerdetection.h +++ b/src/corelib/global/qcompilerdetection.h @@ -1061,6 +1061,37 @@ #endif /* + * SG10's SD-6 feature detection and some useful extensions from Clang and GCC + * https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations + * http://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros + */ +#ifdef __has_builtin +# define QT_HAS_BUILTIN(x) __has_builtin(x) +#else +# define QT_HAS_BUILTIN(x) 0 +#endif +#ifdef __has_attribute +# define QT_HAS_ATTRIBUTE(x) __has_attribute(x) +#else +# define QT_HAS_ATTRIBUTE(x) 0 +#endif +#ifdef __has_cpp_attribute +# define QT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) +#else +# define QT_HAS_CPP_ATTRIBUTE(x) 0 +#endif +#ifdef __has_include +# define QT_HAS_INCLUDE(x) __has_include(x) +#else +# define QT_HAS_INCLUDE(x) 0 +#endif +#ifdef __has_include_next +# define QT_HAS_INCLUDE_NEXT(x) __has_include_next(x) +#else +# define QT_HAS_INCLUDE_NEXT(x) 0 +#endif + +/* * C++11 keywords and expressions */ #ifdef Q_COMPILER_NULLPTR @@ -1141,6 +1172,11 @@ # define Q_DECL_ALIGN(n) alignas(n) #endif +#if QT_HAS_CPP_ATTRIBUTE(nodiscard) // P0188R1 +# undef Q_REQUIRED_RESULT +# define Q_REQUIRED_RESULT [[nodiscard]] +#endif + /* * Fallback macros to certain compiler features */ @@ -1215,37 +1251,6 @@ #ifndef QT_MAKE_CHECKED_ARRAY_ITERATOR # define QT_MAKE_CHECKED_ARRAY_ITERATOR(x, N) (x) #endif - -/* - * SG10's SD-6 feature detection and some useful extensions from Clang and GCC - * https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations - * http://clang.llvm.org/docs/LanguageExtensions.html#feature-checking-macros - */ -#ifdef __has_builtin -# define QT_HAS_BUILTIN(x) __has_builtin(x) -#else -# define QT_HAS_BUILTIN(x) 0 -#endif -#ifdef __has_attribute -# define QT_HAS_ATTRIBUTE(x) __has_attribute(x) -#else -# define QT_HAS_ATTRIBUTE(x) 0 -#endif -#ifdef __has_cpp_attribute -# define QT_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x) -#else -# define QT_HAS_CPP_ATTRIBUTE(x) 0 -#endif -#ifdef __has_include -# define QT_HAS_INCLUDE(x) __has_include(x) -#else -# define QT_HAS_INCLUDE(x) 0 -#endif -#ifdef __has_include_next -# define QT_HAS_INCLUDE_NEXT(x) __has_include_next(x) -#else -# define QT_HAS_INCLUDE_NEXT(x) 0 -#endif #ifdef __has_feature # define QT_HAS_FEATURE(x) __has_feature(x) #else |