git / moonbite-core / src/test/compilerbug_tests.cpp · raw

// Copyright (c) 2019-2020 The Bitcoin Core developers// Distributed under the MIT software license, see the accompanying// file COPYING or http://www.opensource.org/licenses/mit-license.php.#include <boost/test/unit_test.hpp>#include <test/util/setup_common.h>BOOST_FIXTURE_TEST_SUITE(compilerbug_tests, BasicTestingSetup)#if defined(__GNUC__)// This block will also be built under clang, which is fine (as it supports noinline)void __attribute__ ((noinline)) set_one(unsigned char* ptr){    *ptr = 1;}int __attribute__ ((noinline)) check_zero(unsigned char const* in, unsigned int len){    for (unsigned int i = 0; i < len; ++i) {        if (in[i] != 0) return 0;    }    return 1;}void set_one_on_stack() {    unsigned char buf[1];    set_one(buf);}BOOST_AUTO_TEST_CASE(gccbug_90348) {    // Test for GCC bug 90348. See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348    for (int i = 0; i <= 4; ++i) {        unsigned char in[4];        for (int j = 0; j < i; ++j) {            in[j] = 0;            set_one_on_stack(); // Apparently modifies in[0]        }        BOOST_CHECK(check_zero(in, i));    }}#endifBOOST_AUTO_TEST_SUITE_END()