Landing: e712b42c5e01

← All landings

Project / Subsystem

gcc / risc-v

Date

2026-04-28

Author

Maximilian Ciric

Commit

e712b42c5e01d70bc9868c5c7e3953c531ec08e3

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: risc-v
patch_id: —
commit_hash: e712b42c5e01d70bc9868c5c7e3953c531ec08e3
source_type: github
headline: Enable address tagging on 64-bit RISC-V with pointer masking.
tldr: GCC now supports hardware-assisted address sanitization (HWASan) on RISC-V 64-bit architectures with pointer masking.
author: Maximilian Ciric
outcome: committed
performance_win: false
breaking_change: false
series_id: gcc:risc-v: enable address tagging on 64-bit targets supporting pointer masking
series_parts: []
tags: • risc-v
• hwasan
• memory safety
• sanitization
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/e712b42c5e01d70bc9868c5c7e3953c531ec08e3
date: 2026-04-28T00:00:00.000Z

This patch enables hardware-assisted address sanitization (HWASan) for RISC-V 64-bit targets that support the pointer masking extension. It implements TARGET_MEMTAG_CAN_TAG_ADDRESSES and TARGET_MEMTAG_TAG_BITSIZE to allow the use of -fsanitize=hwaddress. This improves memory safety by detecting memory errors at runtime, useful where software-based sanitizers are too slow.