2066959 - Enable -fstack-clash-protection on riscv64 with Clang>=22.1.8

Status: RESOLVED FIXED

(Firefox Build System :: Toolchains, task)

Description

[Rong Bao [:csmantle]]

This feature has been fixed since Clang 22.1.8.

Comment 1

[Rong Bao [:csmantle]]

Attachment: Bug 2066959 - Enable -fstack-clash-protection on riscv64 Clang>=22.1.8. r=glandium!

This feature was merged into Clang's release/22.x on Jun 12, 2026 and
was released with Clang 22.1.8. It was also shipped with the main
branch.

Link: https://github.com/llvm/llvm-project/pull/195456
("[CodeGen][RISCV] Inline stack probes immediately after allocateStack
in eliminateCallFramePseudoInstr")
Link: https://github.com/llvm/llvm-project/pull/202882 ("release/22.x
v2: [CodeGen][RISCV] Inline stack probes immediately after allocateStack
in eliminateCallFramePseudoInstr (#195456)")

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/520da1af89c2
https://hg.mozilla.org/integration/autoland/rev/778a9874acf1
Enable -fstack-clash-protection on riscv64 Clang>=22.1.8. r=glandium

Comment 3

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/778a9874acf1