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-rw-r--r--src/corelib/global/qcompilerdetection.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h
index 3f51f8c0b4..e2dd16f7a0 100644
--- a/src/corelib/global/qcompilerdetection.h
+++ b/src/corelib/global/qcompilerdetection.h
@@ -511,7 +511,7 @@
# define QT_NO_RTTI
# endif
/* C++11 features, see http://clang.llvm.org/cxx_status.html */
-# if __cplusplus >= 201103L || __GXX_EXPERIMENTAL_CXX0X__
+# if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
# if ((__clang_major__ * 100) + __clang_minor__) >= 209 /* since clang 2.9 */
# define Q_COMPILER_AUTO_TYPE
# define Q_COMPILER_DECLTYPE