Merge bitcoin/bitcoin#22713: Fix build with Boost 1.77.0

acb7aad Fix build with Boost 1.77.0 (Rafael Sadowski)

Pull request description:

  BOOST_FILESYSTEM_C_STR changed to accept the path as an argument.

ACKs for top commit:
  hebasto:
    ACK acb7aad
  benthecarman:
    ACK acb7aad
  fanquake:
    ACK acb7aad - tested the fix with Boost 1.77.0 and 1.71.0.

Tree-SHA512: c25fcb56971ee7a448cfb074f8a13696b32c16c63f81076f8a76911f93aa849c8f3637555b0b4215fa0d8b958641d7e4e60d10e103b833545cbc6b1f4009b526

Author: fanquake

src/fs.cpp

@@ -242,7 +242,11 @@ void ofstream::close()
 }
 #else // __GLIBCXX__
 
+#if BOOST_VERSION >= 107700
+static_assert(sizeof(*BOOST_FILESYSTEM_C_STR(fs::path())) == sizeof(wchar_t),
+#else
 static_assert(sizeof(*fs::path().BOOST_FILESYSTEM_C_STR) == sizeof(wchar_t),
+#endif // BOOST_VERSION >= 107700
     "Warning: This build is using boost::filesystem ofstream and ifstream "
     "implementations which will fail to open paths containing multibyte "
     "characters. You should delete this static_assert to ignore this warning, "

src/wallet/test/db_tests.cpp

@@ -25,7 +25,11 @@ BOOST_AUTO_TEST_CASE(getwalletenv_file)
     std::string test_name = "test_name.dat";
     const fs::path datadir = gArgs.GetDataDirNet();
     fs::path file_path = datadir / test_name;
+#if BOOST_VERSION >= 107700
+    std::ofstream f(BOOST_FILESYSTEM_C_STR(file_path));
+#else
     std::ofstream f(file_path.BOOST_FILESYSTEM_C_STR);
+#endif // BOOST_VERSION >= 107700
     f.close();
 
     std::string filename;

src/wallet/test/init_test_fixture.cpp

@@ -32,7 +32,11 @@ InitWalletDirTestingSetup::InitWalletDirTestingSetup(const std::string& chainNam
     fs::create_directories(m_walletdir_path_cases["default"]);
     fs::create_directories(m_walletdir_path_cases["custom"]);
     fs::create_directories(m_walletdir_path_cases["relative"]);
+#if BOOST_VERSION >= 107700
+    std::ofstream f(BOOST_FILESYSTEM_C_STR(m_walletdir_path_cases["file"]));
+#else
     std::ofstream f(m_walletdir_path_cases["file"].BOOST_FILESYSTEM_C_STR);
+#endif // BOOST_VERSION >= 107700
     f.close();
 }