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libstdc++: Fix std::format test for strict -std=c++20 mode

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Adjust a test to avoid using std::make_unsigned_t<__int128>. That's
ill-formed in strict modes because std::is_integral_v<__int128> is
false.

libstdc++-v3/ChangeLog:

	* testsuite/std/format/functions/format.cc: Do not use
	std::make_unsigned_t<__int128>.
This commit is contained in:
Jonathan Wakely 2022-11-15 14:24:57 +00:00
parent a5d4f38fbe
commit c68c468e0e
1 changed files with 4 additions and 3 deletions

7
libstdc++-v3/testsuite/std/format/functions/format.cc

@ -233,7 +233,7 @@ test_wchar()
void
test_minmax()
{
auto check = []<typename T>(T) {
auto check = []<typename T, typename U = std::make_unsigned_t<T>>(T, U = 0) {
const int digits = std::numeric_limits<T>::digits;
const std::string zeros(digits, '0');
const std::string ones(digits, '1');
@ -241,7 +241,6 @@ test_minmax()
VERIFY( s == "-1" + zeros );
s = std::format("{:b}" , std::numeric_limits<T>::max());
VERIFY( s == ones );
using U = std::make_unsigned_t<T>;
s = std::format("{:0{}b}" , std::numeric_limits<U>::min(), digits + 1);
VERIFY( s == '0' + zeros );
s = std::format("{:b}" , std::numeric_limits<U>::max());
@ -252,7 +251,9 @@ test_minmax()
check(std::int32_t(0));
check(std::int64_t(0));
#ifdef __SIZEOF_INT128__
check(__int128(0));
// std::make_unsigned_t<__int128> is invalid for strict -std=c++20 mode,
// so pass a second argument of the unsigned type.
check(__int128(0), (unsigned __int128)(0));
#endif
}