Landing: 3f6fbace7b38

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Project / Subsystem

gcc / ada

Date

2026-05-18

Author

Steve Baird

Commit

3f6fbace7b3861e34bd8c10fce5b29a05e871120

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: ada
patch_id: —
commit_hash: 3f6fbace7b3861e34bd8c10fce5b29a05e871120
source_type: github
headline: Ada unbounded holder no longer dereferences null pointers
tldr: GCC's Ada runtime for `Bounded_Indefinite_Holders` now checks for empty holders before dereferencing, preventing null pointer errors.
author: Steve Baird
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • ada
• runtime
• bugfix
• null-pointer
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/3f6fbace7b3861e34bd8c10fce5b29a05e871120
date: 2026-05-18T00:00:00.000Z

A null pointer dereference in the Adjust procedure for Ada.Containers.Bounded_Indefinite_Holders.Holder has been fixed. Previously, the procedure would attempt to copy an element’s value without checking if the holder was empty, leading to a crash if the element didn’t exist. The fix introduces a check to ensure the holder is not empty before attempting to access its element, improving runtime stability.