std: add auto traits to TAIT bound

joboet · Jul 26, 2023 · 29e3f8b · 29e3f8b
1 parent 6776af5
commit 29e3f8b
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Showing 2 changed files with 6 additions and 11 deletions.
diff --git a/library/std/src/backtrace.rs b/library/std/src/backtrace.rs
@@ -140,6 +140,11 @@ struct Capture {
     frames: Vec<BacktraceFrame>,
 }
 
+fn _assert_send_sync() {
+    fn _assert<T: Send + Sync>() {}
+    _assert::<Backtrace>();
+}
+
 /// A single frame of a backtrace.
 #[unstable(feature = "backtrace_frames", issue = "79676")]
 pub struct BacktraceFrame {
@@ -422,7 +427,7 @@ impl fmt::Display for Backtrace {
     }
 }
 
-type LazyResolve = impl FnOnce() -> Capture;
+type LazyResolve = impl (FnOnce() -> Capture) + Send + Sync;
 
 fn lazy_resolve(mut capture: Capture) -> LazyResolve {
     move || {

diff --git a/library/std/tests/backtrace.rs b/library/std/tests/backtrace.rs