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More checks for non-compilable code, plus fix for span (#1180)

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This commit is contained in:
Werner Henze
2025-01-04 11:50:31 -06:00
committed by GitHub
parent c832885f15
commit 1cdb8d295e
8 changed files with 439 additions and 412 deletions
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tests/owner_tests.cpp
+16 -9
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@@ -17,6 +17,7 @@
#include <gtest/gtest.h>
#include <gsl/pointers> // for owner
#include <type_traits> // for declval
using namespace gsl;
@@ -32,12 +33,18 @@ TEST(owner_tests, basic_test)
delete p;
}
TEST(owner_tests, check_pointer_constraint)
{
#ifdef CONFIRM_COMPILATION_ERRORS
{
owner<int> integerTest = 10;
owner<std::shared_ptr<int>> sharedPtrTest(new int(10));
}
#endif
}
#if __cplusplus >= 201703l
using std::void_t;
#else // __cplusplus >= 201703l
template <class...>
using void_t = void;
#endif // __cplusplus < 201703l
template <typename U, typename = void>
static constexpr bool OwnerCompilesFor = false;
template <typename U>
static constexpr bool OwnerCompilesFor<U, void_t<decltype(gsl::owner<U>{})>> =
true;
static_assert(OwnerCompilesFor<int*>, "OwnerCompilesFor<int*>");
static_assert(!OwnerCompilesFor<int>, "!OwnerCompilesFor<int>");
static_assert(!OwnerCompilesFor<std::shared_ptr<int>>, "!OwnerCompilesFor<std::shared_ptr<int>>");