Issue 240424.2: C standard release dates for DW_AT_language_version, clarify semantics
| Author: | Adrian Prantl |
|---|---|
| Champion: | |
| Date submitted: | 2024-04-24 |
| Date revised: | |
| Date closed: | 2024-04-29 |
| Type: | Enhancement |
| Status: | Accepted with clarification |
| DWARF Version: | 6 |
Background
The list of languages at languages-v6 does not list release dates for the ISO C standard. Producers need to know what version numbers they should produce though. I scanned the ISO website for appropriate dates to use.
Proposed Changes
Augment the table of language encodings to add
C (K&R and ISO) DW_LNAME_C 0x0003 0 YYYYMM
K&R 000000
C89 198912
C99 199901
C11 201112
C17 201710
C23 202311
Add the following non-normative wording:
To convert a version number to a specific release, it is good practice to treat the YYYYMM version numbers listed in this document as the maximum version that is interpreted as belonging to a specific release. This way consumers can emit version numbers for unreleased upcoming specifications, by using, e.g., the date the compiler was built.
References
2024-04-29: Accepted. Table of language encodings will remain website only. Suggested non-normative wording for YYYYMM (and YYYY and YYYYRR) to be added below Table 3.2.
