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[libcxx][test] Update directory_entry test for C++20 

P1614R2 removes most of `directory_entry`'s member comparison operators, leaving only `operator==` and `operator<=>`. This test should require the comparison expressions to be valid rather than require the member functions to be present so it is correct in both C++17 and C++20 modes.
This commit is contained in:
Casey Carter 2021-01-28 09:35:48 -08:00
parent 0bca9a7ce2
commit 2dd0c4d846
1 changed files with 4 additions and 3 deletions
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7
libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/comparisons.pass.cpp
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@ -28,13 +28,14 @@
#define CHECK_OP(Op) \
static_assert(std::is_same<decltype(ce. operator Op (ce)), bool>::value, ""); \
static_assert(noexcept(ce.operator Op (ce)), "Operation must be noexcept" )
static_assert(std::is_same<decltype(ce Op ce), bool>::value, ""); \
static_assert(noexcept(ce Op ce), "Operation must be noexcept" )
void test_comparison_signatures() {
using namespace fs;
path const p("foo/bar/baz");
// Check that the operators are member functions with the correct signatures.
// Check that the operators are valid, yield bool, and are not
// potentially-throwing.
{
directory_entry const ce(p);
CHECK_OP(==);