Landing: 210b4eca880c

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Project / Subsystem

gcc / gcc/tree-optimization

Date

2026-07-08

Author

Richard Biener

Commit

210b4eca880c88e7f7ec970b68a93a2a28bad1be

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/tree-optimization
patch_id: —
commit_hash: 210b4eca880c88e7f7ec970b68a93a2a28bad1be
source_type: github
headline: tree-optimization/126150 - Fix ICE with replace_uses_by by deferring EH edge purging
tldr: Fixes a compiler internal error occurring during use replacement by deferring EH edge purging.
author: Richard Biener
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • optimization
• bugfix
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/210b4eca880c88e7f7ec970b68a93a2a28bad1be
date: 2026-07-08T00:00:00.000Z

This commit resolves an internal compiler error (ICE) in the replace_uses_by function that occurred when removing basic blocks. The issue stemmed from attempting to purge EH (Exception Handling) edges while iterating over the statements that defined the uses. The fix defers the purging of EH edges until after the iteration is complete, preventing the invalidation of data structures during processing.