From d1712f49d72c3455abf275f1fb1d5b7653d02e2c Mon Sep 17 00:00:00 2001
From: Gus Caplan <me@gus.host>
Date: Sun, 5 Mar 2023 18:55:30 -0800
Subject: move default backtrace setting to sys

---
 library/std/src/panic.rs   | 3 +--
 library/std/src/sys/mod.rs | 9 +++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

(limited to 'library/std/src')

diff --git a/library/std/src/panic.rs b/library/std/src/panic.rs
index 9fa8f5702a8..c827205f80b 100644
--- a/library/std/src/panic.rs
+++ b/library/std/src/panic.rs
@@ -308,8 +308,7 @@ pub fn get_backtrace_style() -> Option<BacktraceStyle> {
                 BacktraceStyle::Short
             }
         })
-        .unwrap_or(if cfg!(target_os = "fuchsia") {
-            // Fuchsia components default to full backtrace.
+        .unwrap_or(if crate::sys::BACKTRACE_DEFAULT {
             BacktraceStyle::Full
         } else {
             BacktraceStyle::Off
diff --git a/library/std/src/sys/mod.rs b/library/std/src/sys/mod.rs
index c080c176a2a..3864a5195f3 100644
--- a/library/std/src/sys/mod.rs
+++ b/library/std/src/sys/mod.rs
@@ -76,3 +76,12 @@ cfg_if::cfg_if! {
         pub mod c;
     }
 }
+
+cfg_if::cfg_if! {
+    // Fuchsia components default to full backtrace.
+    if #[cfg(target_os = "fuchsia")] {
+        pub const BACKTRACE_DEFAULT: bool = true;
+    } else {
+        pub const BACKTRACE_DEFAULT: bool = false;
+    }
+}
-- 
cgit 1.4.1-3-g733a5