Dwglayers sample, nothing with Release build

[CEXT-Dan]

Hi all, my first test with the dwglayers

Source drawing is here
Compiled with visual studio 2022, no compile issues

M:\Dev\Projects\libredwg\build\Debug\dwglayers.exe M:\Dev\Projects\PyRxGit\tests\media\06457.dwg - success, prints the layers
M:\Dev\Projects\libredwg\build\Release\dwglayers.exe M:\Dev\Projects\PyRxGit\tests\media\06457.dwg - nothing
M:\Dev\Projects\libredwg\build\RelWithDebInfo\dwglayers.exe M:\Dev\Projects\PyRxGit\tests\media\06457.dwg – nothing

note this loops through the correct amount of times, but obj is null

for (i = 0; i < _ctrl->num_entries; i++)
  {
    char *name;
    assert (_ctrl->entries);
    if (!_ctrl->entries[i]) // NULL BITCODE_H
      continue;
    obj = _ctrl->entries[i]->obj;
    if (!obj || obj->type != DWG_TYPE_LAYER) // can be DICTIONARY also
      continue;

any ideas?

[CEXT-Dan]

Found the issue, bug?

libredwg/src/decode.c

Lines 1303 to 1315 in c1adcb6

	#ifdef NDEBUG
	memmove (&dec->chain[pos], &dec->chain[pos - comp_offset], comp_bytes);
	#else
	for (; pos < end; pos++)
	{
	unsigned char b;
	assert ((long)pos >= (long)comp_offset);
	assert (pos - comp_offset < dec->size);
	b = dec->chain[pos - comp_offset];
	assert (pos < dec->size);
	dec->chain[pos] = b;
	}
	#endif