ATTR_REC
if (new_size >= offsetof(ATTR_REC, length) + sizeof(a->length))
ATTR_REC *a = ctx->attr;
name_ofs = (sizeof(ATTR_REC) + 7) & ~7;
name_ofs = (sizeof(ATTR_REC) - sizeof(a->compressed_size) + 7) & ~7;
ATTR_REC *a = ctx->attr;