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More constexpr fixes

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This commit is contained in:
Simon Brand
2017-12-23 15:43:35 +00:00
parent 6ec9ffded9 07f7b57390
commit 01dcb2f7bc
3 changed files with 30 additions and 3 deletions
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1
CMakeLists.txt
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@@ -12,6 +12,7 @@ set(TEST_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/tests/main.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/extensions.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/assignment.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/emplace.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/issues.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/bases.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/observers.cpp
${CMAKE_CURRENT_SOURCE_DIR}/tests/constructors.cpp)

26
tests/issues.cpp Normal file
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@@ -0,0 +1,26 @@
#include "catch.hpp"
#include "expected.hpp"
#include <string>
using std::string;
tl::expected<int, string> getInt3(int val)
{
return val;
}
tl::expected<int, string> getInt2(int val)
{
return val;
}
tl::expected<int, string> getInt1()
{
return getInt2(5).and_then(getInt3);
}
TEST_CASE("Issue 1", "[issues.1]") {
getInt1();
}

6
tl/expected.hpp
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@@ -375,7 +375,7 @@ template <class T, class E> struct expected_storage_base<T, E, true, true> {
// T is trivial, E is not.
template <class T, class E> struct expected_storage_base<T, E, true, false> {
constexpr expected_storage_base() : m_val(T{}), m_has_val(true) {}
constexpr expected_storage_base(no_init_t) : m_has_val(false) {}
TL_EXPECTED_MSVC2015_CONSTEXPR expected_storage_base(no_init_t) : m_has_val(false) {}
template <class... Args,
detail::enable_if_t<std::is_constructible<T, Args &&...>::value> * =
@@ -1477,14 +1477,14 @@ public:
class U = T,
detail::enable_if_t<!std::is_convertible<U &&, T>::value> * = nullptr,
detail::expected_enable_forward_value<T, E, U> * = nullptr>
explicit constexpr expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
explicit TL_EXPECTED_MSVC2015_CONSTEXPR expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
/// \exclude
template <
class U = T,
detail::enable_if_t<std::is_convertible<U &&, T>::value> * = nullptr,
detail::expected_enable_forward_value<T, E, U> * = nullptr>
constexpr expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
TL_EXPECTED_MSVC2015_CONSTEXPR expected(U &&v) : expected(in_place, std::forward<U>(v)) {}
template <
class U = T,