Landing: d36cc0e6c3c6

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Project / Subsystem

gcc / libstdc++

Date

2026-08-06

Author

Tomasz Kamiński

Commit

d36cc0e6c3c6941db738323dd8ff62cd7fa2825c

Source

github

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Breaking

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All attributes

project: gcc
subsystem: libstdc++
patch_id: —
commit_hash: d36cc0e6c3c6941db738323dd8ff62cd7fa2825c
source_type: github
headline: std::errc constants for UNIX STREAMS deprecated
tldr: Several std::errc constants related to UNIX STREAMS are now deprecated.
author: Tomasz Kamiński
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • libstdc++
• cpp
• deprecation
• error handling
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/d36cc0e6c3c6941db738323dd8ff62cd7fa2825c
date: 2026-08-06T00:00:00.000Z

In accordance with LWG3869, GCC’s libstdc++ has deprecated the std::errc constants no_message_available, no_stream_resources, not_a_stream, and stream_timeout. These constants are related to UNIX STREAMS functionality. The deprecation is marked with the _GLIBCXX23_DEPRECATED attribute.