ok = ok && gguf_fread_str(file, &info->name,                          &offset);   // [1] maybe read failed,then info->name = nullptr
            ok = ok && gguf_fread_el (file, &info->n_dims, sizeof(info->n_dims),  &offset);

            ok = ok && (info->n_dims <= GGML_MAX_DIMS);

            for (uint32_t j = 0; j < info->n_dims; ++j) {
                ok = ok && gguf_fread_el(file, &info->ne[j], sizeof(info->ne[j]), &offset);
            }

            ok = ok && gguf_fread_el (file, &info->type,   sizeof(info->type),    &offset);
            ok = ok && gguf_fread_el (file, &info->offset, sizeof(info->offset),  &offset);

            // TODO: return an error instead of crashing with GGML_ASSERT
            gguf_tensor_info_sanitize(info);

            // make sure there is no duplicated tensor names
            for (uint64_t j = 0; j < i; ++j) {
                if (strcmp(info->name.data, ctx->infos[j].name.data) == 0) {        // [2] don't check wether data is nullptr
                    fprintf(stderr, "%s: duplicated tensor name %s\n", __func__, info->name.data);
                    ok = false;
                }
            }

static bool gguf_fread_str(FILE * file, struct gguf_str * p, size_t * offset) {
    p->n    = 0;
    p->data = NULL;

    bool ok = true;

    ok = ok && gguf_fread_el(file, &p->n, sizeof(p->n), offset);

    // early exit if string length is invalid, prevents from integer overflow
    if (p->n == SIZE_MAX) {             //  exist before call GGML_CALLOC
        fprintf(stderr, "%s: invalid string length (%" PRIu64 ")\n", __func__, p->n);  
        return false;
    }

    p->data = GGML_CALLOC(p->n + 1, 1);

    ok = ok && gguf_fread_el(file,  p->data, p->n, offset);

    return ok;
}