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Add tests for LWG-4506 source_location is explicitly unspecified if is constexpr or not #6225

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Add tests for LWG-4506 source_location is explicitly unspecified if is constexpr or not #6225

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17 changes: 17 additions & 0 deletions tests/std/tests/P1208R6_source_location/test.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,10 @@ using namespace std;
#define THISCALL_OR_CDECL "__cdecl"
#endif

static_assert(semiregular<source_location>);
static_assert(is_nothrow_default_constructible_v<source_location>);
static_assert(is_nothrow_copy_constructible_v<source_location>);
static_assert(is_nothrow_copy_assignable_v<source_location>);
static_assert(is_nothrow_move_constructible_v<source_location>);
static_assert(is_nothrow_move_assignable_v<source_location>);
static_assert(is_nothrow_swappable_v<source_location>);
Expand Down Expand Up @@ -266,6 +269,20 @@ constexpr bool test() {
return true;
}

// Also test LWG-4506 "source_location is explicitly unspecified if is constexpr or not"
constexpr bool test_lwg_4506() {
auto loc = source_location::current();
auto loc_copy_constructed = loc;
[[maybe_unused]] auto loc_move_constructed = move(loc_copy_constructed);
source_location loc_copy_assigned;
[[maybe_unused]] source_location loc_move_assigned;
loc_copy_assigned = loc;
loc_move_assigned = move(loc_copy_assigned);
return true;
}

static_assert(test_lwg_4506());

// Also test GH-2822 Failed to specialize std::invoke on operator() with default argument
// std::source_location::current()
void test_gh_2822() { // COMPILE-ONLY
Expand Down