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llvm-project/libcxx/test/std/language.support/support.runtime/cstdlib.pass.cpp
Aiden Grossman d707870ceb [libcxx] XFAIL some tests for LLVM libc 
Mark the tests that are currently failing on LLVM libc with the new
CMake cache as XFAIL so that we can get CI stood up as soon as possible.

Reviewers: ldionne, jtstogel, philnik777

Pull Request: https://github.com/llvm/llvm-project/pull/193644
2026-04-23 10:16:18 -07:00

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// test <cstdlib>
// mblen was added in Android API 26.
// TODO: Switch from UNSUPPORTED to XFAIL once the Android CI Docker sysroot is
// updated.
// UNSUPPORTED: LIBCXX-ANDROID-FIXME && target={{.+}}-android{{(eabi)?(21|22|23|24|25)}}
// Use of undeclared identifier 'system'.
// XFAIL: LLVM-LIBC-FIXME
#include <cstdlib>
#include <cassert>
#include <type_traits>
#include <utility>
#include "test_macros.h"
#ifndef EXIT_FAILURE
#error EXIT_FAILURE not defined
#endif
#ifndef EXIT_SUCCESS
#error EXIT_SUCCESS not defined
#endif
#ifndef MB_CUR_MAX
#error MB_CUR_MAX not defined
#endif
#ifndef NULL
#error NULL not defined
#endif
#ifndef RAND_MAX
#error RAND_MAX not defined
#endif
template <class TestType, class IntType>
void test_div_struct() {
TestType obj;
static_assert(sizeof(obj) >= sizeof(IntType) * 2, ""); // >= to account for alignment.
static_assert((std::is_same<decltype(obj.quot), IntType>::value), "");
static_assert((std::is_same<decltype(obj.rem), IntType>::value), "");
((void) obj);
};
template <class T, class = decltype(std::abs(std::declval<T>()))>
std::true_type has_abs_imp(int);
template <class T>
std::false_type has_abs_imp(...);
template <class T>
struct has_abs : decltype(has_abs_imp<T>(0)) {};
void test_abs() {
TEST_DIAGNOSTIC_PUSH
TEST_CLANG_DIAGNOSTIC_IGNORED("-Wabsolute-value")
static_assert((std::is_same<decltype(std::abs((float)0)), float>::value), "");
static_assert((std::is_same<decltype(std::abs((double)0)), double>::value), "");
static_assert(
(std::is_same<decltype(std::abs((long double)0)), long double>::value), "");
static_assert((std::is_same<decltype(std::abs((int)0)), int>::value), "");
static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value),
"");
static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
"");
static_assert((std::is_same<decltype(std::abs((unsigned short)0)), int>::value),
"");
static_assert((std::is_same<decltype(std::abs((signed char)0)), int>::value),
"");
static_assert((std::is_same<decltype(std::abs((short)0)), int>::value),
"");
static_assert((std::is_same<decltype(std::abs((unsigned char)0)), int>::value),
"");
static_assert((std::is_same<decltype(std::abs((char)0)), int>::value),
"");
static_assert(!has_abs<unsigned>::value, "");
static_assert(!has_abs<unsigned long>::value, "");
static_assert(!has_abs<unsigned long long>::value, "");
static_assert(!has_abs<std::size_t>::value, "");
TEST_DIAGNOSTIC_POP
assert(std::abs(-1.) == 1);
}
int main(int, char**)
{
std::size_t s = 0;
((void)s);
static_assert((std::is_same<std::size_t, decltype(sizeof(int))>::value), "");
test_div_struct<std::div_t, int>();
test_div_struct<std::ldiv_t, long>();
test_div_struct<std::lldiv_t, long long>();
char** endptr = 0;
static_assert((std::is_same<decltype(std::atof("")), double>::value), "");
static_assert((std::is_same<decltype(std::atoi("")), int>::value), "");
static_assert((std::is_same<decltype(std::atol("")), long>::value), "");
static_assert((std::is_same<decltype(std::atoll("")), long long>::value), "");
static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
static_assert((std::is_same<decltype(std::strtod("", endptr)), double>::value), "");
static_assert((std::is_same<decltype(std::strtof("", endptr)), float>::value), "");
static_assert((std::is_same<decltype(std::strtold("", endptr)), long double>::value), "");
static_assert((std::is_same<decltype(std::strtol("", endptr,0)), long>::value), "");
static_assert((std::is_same<decltype(std::strtoll("", endptr,0)), long long>::value), "");
static_assert((std::is_same<decltype(std::strtoul("", endptr,0)), unsigned long>::value), "");
static_assert((std::is_same<decltype(std::strtoull("", endptr,0)), unsigned long long>::value), "");
static_assert((std::is_same<decltype(std::rand()), int>::value), "");
static_assert((std::is_same<decltype(std::srand(0)), void>::value), "");
// std::aligned_alloc tested in cstdlib.aligned_alloc.compile.pass.cpp
void* pv = 0;
void (*handler)() = 0;
int (*comp)(void const*, void const*) = 0;
static_assert((std::is_same<decltype(std::calloc(0,0)), void*>::value), "");
static_assert((std::is_same<decltype(std::free(0)), void>::value), "");
static_assert((std::is_same<decltype(std::malloc(0)), void*>::value), "");
static_assert((std::is_same<decltype(std::realloc(0,0)), void*>::value), "");
static_assert((std::is_same<decltype(std::abort()), void>::value), "");
static_assert((std::is_same<decltype(std::atexit(handler)), int>::value), "");
static_assert((std::is_same<decltype(std::exit(0)), void>::value), "");
static_assert((std::is_same<decltype(std::_Exit(0)), void>::value), "");
static_assert((std::is_same<decltype(std::getenv("")), char*>::value), "");
static_assert((std::is_same<decltype(std::system("")), int>::value), "");
static_assert((std::is_same<decltype(std::bsearch(pv,pv,0,0,comp)), void*>::value), "");
static_assert((std::is_same<decltype(std::qsort(pv,0,0,comp)), void>::value), "");
static_assert((std::is_same<decltype(std::abs(0)), int>::value), "");
static_assert((std::is_same<decltype(std::abs((long)0)), long>::value), "");
static_assert((std::is_same<decltype(std::abs((long long)0)), long long>::value), "");
static_assert((std::is_same<decltype(std::labs((long)0)), long>::value), "");
static_assert((std::is_same<decltype(std::llabs((long long)0)), long long>::value), "");
static_assert((std::is_same<decltype(std::div(0,0)), std::div_t>::value), "");
static_assert((std::is_same<decltype(std::div(0L,0L)), std::ldiv_t>::value), "");
static_assert((std::is_same<decltype(std::div(0LL,0LL)), std::lldiv_t>::value), "");
static_assert((std::is_same<decltype(std::ldiv(0L,0L)), std::ldiv_t>::value), "");
static_assert((std::is_same<decltype(std::lldiv(0LL,0LL)), std::lldiv_t>::value), "");
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
wchar_t* pw = 0;
const wchar_t* pwc = 0;
char* pc = 0;
static_assert((std::is_same<decltype(std::mblen("",0)), int>::value), "");
static_assert((std::is_same<decltype(std::mbtowc(pw,"",0)), int>::value), "");
static_assert((std::is_same<decltype(std::wctomb(pc,L' ')), int>::value), "");
static_assert((std::is_same<decltype(std::mbstowcs(pw,"",0)), std::size_t>::value), "");
static_assert((std::is_same<decltype(std::wcstombs(pc,pwc,0)), std::size_t>::value), "");
#endif
test_abs();
return 0;
}
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