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struct DontHeapMeBro {
 
    // Uncomment this and watch explosions
    //byte buffer[( 2048 ) + sizeof(USN)];
 
    void Scan () {
        std::unique_ptr<void, HandleReleaseLambda> scanhandle( 
			CreateFileW( api,
			GENERIC_READ | GENERIC_WRITE, 
			FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
			null,
			OPEN_ALWAYS,
			FILE_FLAG_NO_BUFFERING | ( isfile ? 0 : FILE_FLAG_BACKUP_SEMANTICS ),
			null ) );
 
		if ( scanhandle.get() == INVALID_HANDLE_VALUE )
			return;
 
		bool success = false;
		//ZeroMemory(buffer, 2048 + sizeof(USN))
        // Comment this out and use the above to watch Windows explode
        byte buffer[( 2048 ) + sizeof(USN)] = { 0 };
		USN_JOURNAL_DATA journalquery = { 0 };
		READ_USN_JOURNAL_DATA journaldata = { 0 };
		ulong journaldatabuffersize = 0, journalquerybuffersize = 0, readbuffersize = 0;
		ullong targetreference = 0;
		USN usn;
		JournalRecord* record = null;
		byte* recordaddress = null;
 
		success = DeviceIoControl( scanhandle.get(),
			FSCTL_QUERY_USN_JOURNAL,
			NULL,
			0,
			&journalquery,
			sizeof( journalquery ),
			&journalquerybuffersize, NULL ) != 0;
 
		if (!success)
			return;
 
// Put you buffer in the struct definition, this will fail, heap or non-heap.
// However, if the buffer is defined here, this call will not fail,
// Even if you have the same parameters
		success = DeviceIoControl( scanhandle.get(),
			FSCTL_READ_FILE_USN_DATA,
			null, 
			0,
			(void*)buffer, 
			2048 + sizeof( USN ),
			&readbuffersize,
			null ) != 0;
 
		if ( !success )
			throw "Fuck your shit";
    }
}

prog.cpp: In member function 'void DontHeapMeBro::Scan()':
prog.cpp:7:9: error: 'unique_ptr' is not a member of 'std'
prog.cpp:7:25: error: expected primary-expression before 'void'
prog.cpp:7:25: error: expected ';' before 'void'
prog.cpp:16:8: error: 'scanhandle' was not declared in this scope
prog.cpp:16:28: error: 'INVALID_HANDLE_VALUE' was not declared in this scope
prog.cpp:22:9: error: 'byte' was not declared in this scope
prog.cpp:22:14: error: expected ';' before 'buffer'
prog.cpp:23:3: error: 'USN_JOURNAL_DATA' was not declared in this scope
prog.cpp:23:20: error: expected ';' before 'journalquery'
prog.cpp:24:3: error: 'READ_USN_JOURNAL_DATA' was not declared in this scope
prog.cpp:24:25: error: expected ';' before 'journaldata'
prog.cpp:25:3: error: 'ulong' was not declared in this scope
prog.cpp:25:9: error: expected ';' before 'journaldatabuffersize'
prog.cpp:26:3: error: 'ullong' was not declared in this scope
prog.cpp:26:10: error: expected ';' before 'targetreference'
prog.cpp:27:3: error: 'USN' was not declared in this scope
prog.cpp:27:7: error: expected ';' before 'usn'
prog.cpp:28:3: error: 'JournalRecord' was not declared in this scope
prog.cpp:28:18: error: 'record' was not declared in this scope
prog.cpp:28:27: error: 'null' was not declared in this scope
prog.cpp:29:9: error: 'recordaddress' was not declared in this scope
prog.cpp:31:30: error: 'scanhandle' was not declared in this scope
prog.cpp:32:4: error: 'FSCTL_QUERY_USN_JOURNAL' was not declared in this scope
prog.cpp:33:4: error: 'NULL' was not declared in this scope
prog.cpp:35:5: error: 'journalquery' was not declared in this scope
prog.cpp:37:5: error: 'journalquerybuffersize' was not declared in this scope
prog.cpp:37:34: error: 'DeviceIoControl' was not declared in this scope
prog.cpp:46:4: error: 'FSCTL_READ_FILE_USN_DATA' was not declared in this scope
prog.cpp:49:11: error: 'buffer' was not declared in this scope
prog.cpp:51:5: error: 'readbuffersize' was not declared in this scope
prog.cpp: At global scope:
prog.cpp:56:5: error: expected unqualified-id at end of input

Standard output is empty