[PATCH v2] elf: Only use function size from regular object

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Project / Subsystem

binutils / elf

Date

2026-09-10

Proposer

H.J. Lu

Source type

public_inbox

Consensus

Under Review

Sentiment

4/10

Technical tradeoffs

• Simplifies linker logic by removing consideration of shared library function sizes, potentially improving performance.
• Risk of breaking compilation or runtime behavior on architectures where shared library function sizes are relevant for linking.

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All attributes

project: binutils
subsystem: elf
patch_id: —
discussion_id: CAMe9rOo0M1A28Kty+TgzdLB4pRG1xnmdYM=RaDWHw3REMCVzvA@mail.gmail.com
source_type: public_inbox
title: [PATCH v2] elf: Only use function size from regular object
headline: elf: Only use function size from regular object
tldr: Ensures linker uses function size from regular objects, not shared libraries, for relevance.
proposer: H.J. Lu
consensus: Under Review
outcome: under_review
sentiment_score: 4
technical_tradeoffs: • Simplifies linker logic by removing consideration of shared library function sizes, potentially improving performance.
• Risk of breaking compilation or runtime behavior on architectures where shared library function sizes are relevant for linking.
series_id: —
series_role: standalone
series_parts: []
tags: • ELF
• linker
• function size
• shared libraries
• MIPS
url: https://inbox.sourceware.org/binutils/CAMe9rOo0M1A28Kty+TgzdLB4pRG1xnmdYM=RaDWHw3REMCVzvA@mail.gmail.com
bugzilla_url: —
date: 2026-09-10T00:00:00.000Z

[PATCH v2] elf: Only use function size from regular object

This patch modifies the ELF linker to exclusively use function sizes defined in regular object files. It argues that function sizes specified in shared libraries at link-time are irrelevant for the linking process. The change is intended to fix PR ld/34585 and includes updates to test cases for various ELF targets.