Landing: 94556938452d

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Project / Subsystem

gcc / c++

Date

2026-07-26

Author

Torbjörn SVENSSON

Commit

94556938452d2bde01f5954207294906bbb53d8f

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: c++
patch_id: —
commit_hash: 94556938452d2bde01f5954207294906bbb53d8f
source_type: github
headline: ICE on systems without mmap support when finishing module output
tldr: Fixes an internal compiler error (ICE) in `cc1plus` on systems without `mmap` support when handling module output after prior errors.
author: Torbjörn SVENSSON
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • c++
• compiler internals
• bugfix
• mmap
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/94556938452d2bde01f5954207294906bbb53d8f
date: 2026-07-26T00:00:00.000Z

The C++ compiler (cc1plus) could encounter an internal compiler error (ICE) on systems lacking mmap support. This occurred when module output processing was attempted after earlier errors prevented the elf_out::begin function from running. The fix ensures that elf_out::end does not attempt to finalize output that never properly began, preventing the ICE.