Landing: 8818c4798003
Project / Subsystem
binutils / avr
Date
2026-08-16
Author
Georg-Johann Lay <gjl@sourceware.org>
Commit
8818c47980038800239da822cfef2aa63e0fac1f
Source
public_inbox
Perf win
No
Breaking
No
All attributes
- project
- binutils
- subsystem
- avr
- patch_id
- —
- commit_hash
- 8818c47980038800239da822cfef2aa63e0fac1f
- source_type
- public_inbox
- headline
- AVR: Support GNU attribute for vtable address spaces
- tldr
- Adds support for a GNU attribute to specify AVR vtable address spaces, improving ABI compatibility.
- author
- Georg-Johann Lay <gjl@sourceware.org>
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • avr
- • embedded
- • abi
- • compiler
- • linker
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-16T00:00:00.000Z
This commit introduces support for .gnu_attribute 4 (Tag_GNU_AVR_VTABLE_AS) for AVR targets. This allows C++ virtual tables to be placed in specific address spaces, which is crucial for upcoming support in G++ for ISO/IEC TR 18037 ‘Embedded C’ named address spaces. The new attribute helps detect ABI violations by tagging object files with information about the vtable address space used.