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Fix BOOST_STATIC_ASSERT with template arguments

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a2025a932 introduced a `BOOST_STATIC_ASSERT`-check with a template argument list. This causes a compilation error in a pre-C++11 compiler without support for variadic arguments (i.e. if `BOOST_NO_CXX11_VARIADIC_MACROS` is set).

For example:
    $ echo '#include <boost/endian/buffers.hpp>' > test.cpp
    $ g++ -c -std=c++03 -DBOOST_NO_CXX11_VARIADIC_MACROS -I/path/to/boost test.cpp

results in:

```
In file included from /path/to/boost/boost/endian/detail/endian_store.hpp:9,
                 from /path/to/boost/boost/endian/buffers.hpp:30,
                 from test.cpp:1:
/path/to/boost/boost/endian/detail/endian_reverse.hpp:111:76: error: macro "BOOST_STATIC_ASSERT" passed 2 arguments, but takes just 1
  111 |     BOOST_STATIC_ASSERT( is_integral<T>::value && !is_same<T, bool>::value );
      |                                                                            ^
In file included from /path/to/boost/boost/endian/detail/endian_reverse.hpp:13,
                 from /path/to/boost/boost/endian/detail/endian_store.hpp:9,
                 from /path/to/boost/boost/endian/buffers.hpp:30,
                 from test.cpp:1:
/path/to/boost/boost/static_assert.hpp:157: note: macro "BOOST_STATIC_ASSERT" defined here
  157 | #     define BOOST_STATIC_ASSERT( B ) \
      |
```
This commit is contained in:
Tanzinul Islam
2019-10-25 15:18:24 +01:00
parent fbc198e75d
commit 7f9a618b8c
1 changed files with 1 additions and 1 deletions
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2
include/boost/endian/detail/endian_reverse.hpp
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@ -108,7 +108,7 @@ inline uint128_type BOOST_ENDIAN_CONSTEXPR endian_reverse_impl( uint128_type x )
template<class T> inline BOOST_CONSTEXPR T endian_reverse( T x ) BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value && !is_same<T, bool>::value );
BOOST_STATIC_ASSERT( is_integral<T>::value && !(is_same<T, bool>::value) );
typedef typename detail::integral_by_size< sizeof(T) >::type uintN_t;