Merge bitcoin/bitcoin#22808: [0.21] 0.21.2rc2 backports

d9b18c1290 Fix build with Boost 1.77.0 (Rafael Sadowski)
2d7f2606c1 ci: Run fuzzer task for the master branch only (Hennadii Stepanov)

Pull request description:

  Backported:

  1) #22730
  1) #22713

ACKs for top commit:
  fanquake:
    ACK d9b18c1290 - Checked the backports and tested building this branch with system Boost 1.76.0 and depends Boost 1.77.0.

Tree-SHA512: dc3e0a2b3c1e3e80f6570e329a08ebc5103c233c30562f660432891c90bacb4d88d5373e32b9ac34fd143be46b8e63900ce9f52786b04bc799a4d17ba9fd8499

.cirrus.yml

@@ -107,6 +107,7 @@ task:
 
 task:
   name: 'x86_64 Linux  [GOAL: install]  [focal]  [no depends, only system libs, sanitizers: fuzzer,address,undefined]'
+  only_if: $CIRRUS_BRANCH == $CIRRUS_DEFAULT_BRANCH || $CIRRUS_BASE_BRANCH == $CIRRUS_DEFAULT_BRANCH
   << : *GLOBAL_TASK_TEMPLATE
   container:
     image: ubuntu:focal

src/fs.cpp

@@ -236,7 +236,11 @@ 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

@@ -18,7 +18,11 @@ BOOST_AUTO_TEST_CASE(getwalletenv_file)
     std::string test_name = "test_name.dat";
     const fs::path datadir = GetDataDir();
     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

@@ -31,7 +31,11 @@ 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();
 }