this will have problem ( obj->shdr = obj->symtab = obj->strtab = NULL;)

[zylinux]

looks like forget initial obj->rela_text to NULL.

https://github.com/ushitora-anqou/aqcc/blob/master/ld/link.c

obj->shdr = obj->symtab = obj->strtab = NULL; -> obj->shdr = obj->symtab = obj->strtab = obj->rela_text =NULL;

    if (obj->rela_text == NULL && strcmp(name, ".rela.text") == 0) {
        obj->rela_text = offset;
        obj->nrela_text = size / 24;
    }

[ushitora-anqou]

Yeah, we need to initialize obj->rela_text here. Thanks for pointing that out. I don't have time to fix it now, but a PR is welcome.