when imported from json:

==222113==ERROR: LeakSanitizer: detected memory leaks
```
Direct leak of 13 byte(s) in 2 object(s) allocated from:
    #0 0x7f59a8b10648 in __interceptor_strdup ../../../../src/libsanitizer/asan/asan_interceptors.cpp:439
    #1 0x7f59a83e203c in json_OBJECTS ../../src/in_json.c:2857
    #2 0x7f59a8404853 in dwg_read_json ../../src/in_json.c:4327
    #3 0x55bbacd6d493 in main ../../programs/dxfwrite.c:331
    #4 0x7f59a3db9d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
```

and such.
TODO in alive.text with asan
preR13 dxfwrite leaks
This is a GitHub Issue
repo:libredwg
owner:LibreDWG
Title : preR13 dxfwrite leaks
Issue date:

--- start body ---
when imported from json:

==222113==ERROR: LeakSanitizer: detected memory leaks
```
Direct leak of 13 byte(s) in 2 object(s) allocated from:
    #0 0x7f59a8b10648 in __interceptor_strdup ../../../../src/libsanitizer/asan/asan_interceptors.cpp:439
    #1 0x7f59a83e203c in json_OBJECTS ../../src/in_json.c:2857
    #2 0x7f59a8404853 in dwg_read_json ../../src/in_json.c:4327
    #3 0x55bbacd6d493 in main ../../programs/dxfwrite.c:331
    #4 0x7f59a3db9d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
```

and such.
TODO in alive.text with asan
--- end body ---
