• Add ACN ICD template for Latex (in contrib folder) - draft
• Move to .NET10
• Fix generation of REAL type constraints in icd_new
• Report invalid ACN size constraints for enumerated types
• Fix ICD generation combined with --acn-v2
• Add ACNv2 support in Ada backend

This is a major new release as the C backend for ACN has been deeply refactored.

• Documentation of the changes here: https://github.com/esa/asn1scc/blob/master/Docs/ACN-Deferred-Patching.md
• Fix 4 security vulnerabilities in C runtime (CVE-DRAFT-1..4)

This release fixes the following bugs:

• #362 Add declaration of user-provided mapping functions (and others) as required by recent GCC versions
• #356 Fix IA5String initialization strings in Ada

Fix #355

Bugfix release covering:

• Issue #349 : XER encoding issues with SEQUENCE OF CHOICE construct
• Issue #346 : missing error message when using improperly the size ACN tag on BOOLEAN types
• Other minor code refactoring

Maintenance release
fix issue #341

Implements feature described in #343
Addition of a filter in a panel to simplify the navigation in the generated ICD documents

image

Maintenance release

• fix a corner case of infinite loop
• ICD generation improvement
• Fix issue #334 (crash of asn1scc)
• switch to .NET9

Fix issue #332 - generation of duplicate macro definitions in C, causing compiler warnings

• Major bugfix (issue #330) Possible invalid memory access in BitStream_ReadByte (could point to an invalid memory address if buffer was larger than value set in the byte counter)

• This version introduces a functionality to automatically detect and exclude unused generated functions, resulting in significantly smaller output code for both C and Ada backends.

Key Features

1. Unused Function Elimination via -icdPdus
   When using the -icdPdus argument, ASN1SCC now performs a dependency analysis starting from the specified PDUs and their associated functions (isEqual(), isValid(), init(), encode(), and decode()).

   • Only the functions directly or indirectly required by these PDUs are generated.
   • All unused functions are excluded from the output, reducing code size and improving maintainability.

2. New -dpdus Argument
   A new command-line option, -dpdus, was added to help identify Protocol Data Units (PDUs) in the input ASN.1 grammar.

   • PDUs are defined as top-level types that are not referenced by any other type.
   • Detected PDUs are printed to the console to help users configure -icdPdus more easily.

Impact

• Reduces the size of generated code by omitting unused functions.
• Especially beneficial for resource-constrained systems or projects aiming to minimize binary size.