Landing: 93013672e863

← All landings

Project / Subsystem

gcc / bootstrap

Date

2026-05-26

Author

Sergei Trofimovich

Commit

93013672e863b3e0fb99b8adafd84c6850797100

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: bootstrap
patch_id: —
commit_hash: 93013672e863b3e0fb99b8adafd84c6850797100
source_type: github
headline: Bootstrap Fixes Uninitialized Variable Error in Tree Vectorization
tldr: The compiler now initializes a variable in the tree vectorization code to avoid a build failure with certain compiler flags (-Werror=maybe-uninitialized).
author: Sergei Trofimovich
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • bootstrap
• build
• warning
• initialization
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/93013672e863b3e0fb99b8adafd84c6850797100
date: 2026-05-26T00:00:00.000Z

The GCC build was failing in --enable-checking=release mode due to a potentially uninitialized variable stride_step in tree-vect-stmts.cc. This commit explicitly initializes stride_step to prevent this error, ensuring a successful build even with stricter compiler flags. This avoids intermittent build failures related to code size and uninitialized variable analysis.