From 246f239d9f40f633160f0c18f87a20922d4e77bb Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:06:37 +0200
Subject: Merging debian version 1.65.0+dfsg1-2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 compiler/rustc_query_system/src/values.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 compiler/rustc_query_system/src/values.rs

(limited to 'compiler/rustc_query_system/src/values.rs')

diff --git a/compiler/rustc_query_system/src/values.rs b/compiler/rustc_query_system/src/values.rs
new file mode 100644
index 000000000..aeef66f86
--- /dev/null
+++ b/compiler/rustc_query_system/src/values.rs
@@ -0,0 +1,14 @@
+use crate::dep_graph::DepContext;
+
+pub trait Value<CTX: DepContext>: Sized {
+    fn from_cycle_error(tcx: CTX) -> Self;
+}
+
+impl<CTX: DepContext, T> Value<CTX> for T {
+    default fn from_cycle_error(tcx: CTX) -> T {
+        tcx.sess().abort_if_errors();
+        // Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's
+        // non-trivial to define it earlier.
+        panic!("Value::from_cycle_error called without errors");
+    }
+}
-- 
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