memory leaks when use TypeObject for sequences/arrays/maps

[TechVortexZ]

Is there an already existing issue for this?

• [X] I have searched the existing issues

Expected behavior

I use the AddressSanitizer tool to detect memory leaks，when sublisher exit，this is report some leaks.

Current behavior

1. IDL struct define:

struct data :
    {
        string name;
        short data_array[5];
        sequence<short> data_vec;
        map<string, unsigned long> data_map;
    };

2. Publisher code :

registerdataTypes();
type_.get()->auto_fill_type_information(true);
type_.get()->auto_fill_type_object(false);

3. Subscriber code : use on_type_information_received() receive type and create it.

4. FastDDSGen use -typeobject generate idl.

The communication between the Publisher and the Subscriber is normal. But，Use the AddressSanitizer tool to detect memory leaks，when Subscriber exit ，the following leaks has occurred：

=================================================================
==2176269==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 312 byte(s) in 1 object(s) allocated from:
    #0 0x7f2997aa3587 in operator new(unsigned long) ../../../../src/libsanitizer/asan/asan_new_delete.cc:104
    #1 0x7f29974e0211 in void eprosima::fastcdr::deserialize<eprosima::fastrtps::types::PlainSequenceSElemDefn>(eprosima::fastcdr::Cdr&, eprosima::fastrtps::types::PlainSequenceSElemDefn&) (/data/soc-code/code/nos/output/x86_2004/lib/libfastrtps.so.2.12+0x50c211)

Direct leak of 312 byte(s) in 1 object(s) allocated from:
    #0 0x7f2997aa3587 in operator new(unsigned long) ../../../../src/libsanitizer/asan/asan_new_delete.cc:104
    #1 0x7f29974e1b91 in void eprosima::fastcdr::deserialize<eprosima::fastrtps::types::PlainMapSTypeDefn>(eprosima::fastcdr::Cdr&, eprosima::fastrtps::types::PlainMapSTypeDefn&) (/data/soc-code/code/nos/output/x86_2004/lib/libfastrtps.so.2.12+0x50db91)

Direct leak of 312 byte(s) in 1 object(s) allocated from:
    #0 0x7f2997aa3587 in operator new(unsigned long) ../../../../src/libsanitizer/asan/asan_new_delete.cc:104
    #1 0x7f29974e1bb9 in void eprosima::fastcdr::deserialize<eprosima::fastrtps::types::PlainMapSTypeDefn>(eprosima::fastcdr::Cdr&, eprosima::fastrtps::types::PlainMapSTypeDefn&) (/data/soc-code/code/nos/output/x86_2004/lib/libfastrtps.so.2.12+0x50dbb9)

Direct leak of 312 byte(s) in 1 object(s) allocated from:
    #0 0x7f2997aa3587 in operator new(unsigned long) ../../../../src/libsanitizer/asan/asan_new_delete.cc:104
    #1 0x7f29974e2cd8 in void eprosima::fastcdr::deserialize<eprosima::fastrtps::types::PlainArraySElemDefn>(eprosima::fastcdr::Cdr&, eprosima::fastrtps::types::PlainArraySElemDefn&) (/data/soc-code/code/nos/output/x86_2004/lib/libfastrtps.so.2.12+0x50ecd8)

SUMMARY: AddressSanitizer: 1248 byte(s) leaked in 4 allocation(s).

The detailed stack information is as follows:

Steps to reproduce

See Above

Fast DDS version/commit

v2.12.0

Platform/Architecture

Ubuntu Focal 20.04 amd64

Transport layer

Shared Memory Transport (SHM)

Additional context

No response

XML configuration file

No response

Relevant log output

No response

Network traffic capture

No response

[JLBuenoLopez]

Thanks for your report @TechVortexZ

This feature is being currently refactored and it will be available in the next few months. Regretfully, it is not going to be fixed in previous releases. Please, wait until this release in order to use the TypeObject representation with collection types.