Missing ACN checks for post-encoding/decoding attributes

[escmmo]

asn1scc version 4.5.0.4
Consider the following ASN.1 definition:

T-TYPE ::= SEQUENCE
{
    field1 INTEGER,
    field2 INTEGER
}

The case seems to be that in order to use post-encoding-function or post-decoding-validator ACN attributes, one has not only to use both, but there must exist at least one NULL component with the save-position attribute. While this is acceptable, any of the following ACN cases do not produce asn1scc compiler errors (and probably should?) but will fail source code compilation for missing types or declarations:

T-TYPE [post-decoding-validator someDecodeFunction]

Fails on T_TYPE_ACN_Decode() due to a missing declaration for type T_TYPE_extension_function_positions.

T-TYPE [post-decoding-validator someDecodeFunction]
{
    field1 [],
    field2 [],
    insertedField NULL [save-position, pattern '0000'H]
}

Fails on T_TYPE_ACN_Encode() due to unknown bitStreamPositions_1 variable.

Similarly, if one instead uses post-encoding-function only, equivalent errors occur in the counterpart ACN_Decode/Encode() functions.