From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs

(limited to 'tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs')

diff --git a/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs b/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs
new file mode 100644
index 000000000..978c19948
--- /dev/null
+++ b/tests/ui/dep-graph/dep-graph-assoc-type-codegen.rs
@@ -0,0 +1,38 @@
+// Test that when a trait impl changes, fns whose body uses that trait
+// must also be recompiled.
+
+// incremental
+// compile-flags: -Z query-dep-graph
+
+#![feature(rustc_attrs)]
+#![allow(warnings)]
+
+fn main() { }
+
+pub trait Foo: Sized {
+    type T;
+    fn method(self) { }
+}
+
+mod x {
+    use Foo;
+
+    #[rustc_if_this_changed]
+    impl Foo for char { type T = char; }
+
+    impl Foo for u32 { type T = u32; }
+}
+
+mod y {
+    use Foo;
+
+    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
+    pub fn use_char_assoc() {
+        // Careful here: in the representation, <char as Foo>::T gets
+        // normalized away, so at a certain point we had no edge to
+        // codegen.  (But now codegen just depends on typeck.)
+        let x: <char as Foo>::T = 'a';
+    }
+
+    pub fn take_foo<T:Foo>(t: T) { }
+}
-- 
cgit v1.2.3