From 7c75e39790a6cfd5f4f8e90a2554286d3d9eabea Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tomasz=20Mi=C4=85sko?= Date: Wed, 8 Mar 2023 00:00:00 +0000 Subject: [PATCH] panic_immediate_abort requires abort as a panic strategy Guide `panic_immediate_abort` users away from `-Cpanic=unwind` and towards `-Cpanic=abort` to avoid an accidental use of the feature with the unwind strategy, e.g., on a targets where unwind is the default. The `-Cpanic=unwind` combination doesn't offer the same benefits, since the code would still be generated under the assumption that functions implemented in Rust can unwind. --- library/core/src/panicking.rs | 3 +++ 1 file changed, 3 insertions(+) diff --git a/library/core/src/panicking.rs b/library/core/src/panicking.rs index 805a1e51ae9c0..7e7a9cbe4a646 100644 --- a/library/core/src/panicking.rs +++ b/library/core/src/panicking.rs @@ -29,6 +29,9 @@ use crate::fmt; use crate::panic::{Location, PanicInfo}; +#[cfg(feature = "panic_immediate_abort")] +const _: () = assert!(cfg!(panic = "abort"), "panic_immediate_abort requires -C panic=abort"); + // First we define the two main entry points that all panics go through. // In the end both are just convenience wrappers around `panic_impl`.