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Only include vector workaround if vector is included

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This commit is contained in:
Simon Brand
2018-08-22 15:22:16 +01:00
parent bf0efe1625
commit dc129ecf10
1 changed files with 2 additions and 0 deletions
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2
tl/optional.hpp
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@ -60,6 +60,7 @@
// for non-copyable types
#elif (defined(__GNUC__) && __GNUC__ < 8 && \
!defined(__clang__))
#ifdef _GLIBCXX_VECTOR
#ifndef TL_GCC_LESS_8_TRIVIALLY_COPY_CONSTRUCTIBLE_MUTEX
#define TL_GCC_LESS_8_TRIVIALLY_COPY_CONSTRUCTIBLE_MUTEX
namespace tl {
@ -72,6 +73,7 @@ namespace tl {
}
}
#endif
#endif
#define TL_OPTIONAL_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(T) \
tl::detail::is_trivially_copy_constructible<T>::value