diff options
Diffstat (limited to 'src/corelib/global/qcompilerdetection.h')
| -rw-r--r-- | src/corelib/global/qcompilerdetection.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h index 70c9e97c13..085e3063b4 100644 --- a/src/corelib/global/qcompilerdetection.h +++ b/src/corelib/global/qcompilerdetection.h @@ -1341,6 +1341,18 @@ Q_ASSUME_IMPL(valueOfExpression);\ } while (0) +#if QT_HAS_CPP_ATTRIBUTE(fallthrough) +# define Q_FALLTHROUGH() [[fallthrough]] +#elif defined(__cplusplus) +/* Clang can not parse namespaced attributes in C mode, but defines __has_cpp_attribute */ +# if QT_HAS_CPP_ATTRIBUTE(clang::fallthrough) +# define Q_FALLTHROUGH() [[clang::fallthrough]] +# endif +#endif +#ifndef Q_FALLTHROUGH +# define Q_FALLTHROUGH() (void)0 +#endif + /* Sanitize compiler feature availability |