Landing: 1124bb120dea

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Project / Subsystem

gcc / c++

Date

2026-05-27

Author

Jakub Jelinek

Commit

1124bb120dea57071537465033b38da914fc16da

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: c++
patch_id: —
commit_hash: 1124bb120dea57071537465033b38da914fc16da
source_type: github
headline: c++: Avoid ICE when evaluating constants of error type.
tldr: Fixes an internal compiler error (ICE) in C++ code when evaluating a constant expression of error_mark_node type during error recovery.
author: Jakub Jelinek
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • c++
• ice
• error recovery
• templates
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/1124bb120dea57071537465033b38da914fc16da
date: 2026-05-27T00:00:00.000Z

The compiler would ICE when evaluating constant expressions that had a type of error_mark_node during error recovery. This commit avoids this issue by checking for the error_mark_node type in process_metafunction and returning NULL_TREE if found, preventing the ICE. This bug was triggered during template metafunction evaluation.