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Use std::data and std::size for boost equivalents, when possible.

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This avoids the potential ambiguity between boost:: and std:: functions
when the user calls data() or size() unqualified and both alternatives
are found via ADL.

Refs https://github.com/boostorg/core/issues/206.
This commit is contained in:
Andrey Semashev
2025-10-16 18:38:16 +03:00
parent 6814bc508c
commit 45bd9bf69b
4 changed files with 63 additions and 1 deletions
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17
test/size_test.cpp
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@@ -9,6 +9,7 @@ Distributed under the Boost Software License, Version 1.0.
#if !defined(BOOST_NO_CXX11_CONSTEXPR) && !defined(BOOST_NO_CXX11_DECLTYPE)
#include <boost/core/size.hpp>
#include <boost/core/lightweight_test.hpp>
#include <iterator>
struct range {
std::size_t size() const {
@@ -28,10 +29,26 @@ void test_array()
BOOST_TEST_EQ(boost::size(a), 4);
}
void test_ambiguity_with_std_size()
{
// Note: This preprocessor check should be equivalent to that in boost/core/size.hpp
#if (defined(__cpp_lib_nonmember_container_access) && (__cpp_lib_nonmember_container_access >= 201411l)) || \
(defined(_MSC_VER) && (_MSC_VER >= 1900))
// https://github.com/boostorg/core/issues/206
range c;
using std::size;
using boost::size;
BOOST_TEST_EQ(size(c), c.size());
#endif
}
int main()
{
test_range();
test_array();
test_ambiguity_with_std_size();
return boost::report_errors();
}
#else