Merge bitcoin#22268: fuzz: Add temporary debug assert for oss-fuzz issue

faf1af5 fuzz: Add Temporary debug assert for oss-fuzz issue (MarcoFalke)

Pull request description:

  oss-fuzz is acting weird, so add an earlier assert to help troubleshooting

ACKs for top commit:
  practicalswift:
    cr ACK faf1af5

Tree-SHA512: 85830d7d47cf6b4edfe91a07bd5aa8f7110db0bade8df93868cf276ed04d5dd17e671f769e6a0fb5092012b86aa82bb411fb171411f15746981104ce634c88c1

Author: MarcoFalke

src/test/fuzz/process_message.cpp

@@ -45,7 +45,19 @@ void initialize_process_message()
 {
     static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
     g_setup = testing_setup.get();
+
+    // Temporary debug for https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35027
+    {
+        LOCK(::cs_main);
+        assert(CheckDiskSpace(gArgs.GetDataDirNet()));
+        assert(CheckDiskSpace(gArgs.GetDataDirNet(), 48 * 2 * 2 * g_setup->m_node.chainman->ActiveChainstate().CoinsTip().GetCacheSize()));
+    }
     for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
+        {
+            LOCK(::cs_main);
+            assert(CheckDiskSpace(gArgs.GetDataDirNet()));
+            assert(CheckDiskSpace(gArgs.GetDataDirNet(), 48 * 2 * 2 * g_setup->m_node.chainman->ActiveChainstate().CoinsTip().GetCacheSize()));
+        }
         MineBlock(g_setup->m_node, CScript() << OP_TRUE);
     }
     SyncWithValidationInterfaceQueue();