From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/inference/question-mark-type-infer.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/test/ui/inference/question-mark-type-infer.rs

(limited to 'src/test/ui/inference/question-mark-type-infer.rs')

diff --git a/src/test/ui/inference/question-mark-type-infer.rs b/src/test/ui/inference/question-mark-type-infer.rs
new file mode 100644
index 000000000..64333a293
--- /dev/null
+++ b/src/test/ui/inference/question-mark-type-infer.rs
@@ -0,0 +1,15 @@
+// Test that type inference fails where there are multiple possible return types
+// for the `?` operator.
+
+fn f(x: &i32) -> Result<i32, ()> {
+    Ok(*x)
+}
+
+fn g() -> Result<Vec<i32>, ()> {
+    let l = [1, 2, 3, 4];
+    l.iter().map(f).collect()? //~ ERROR type annotations needed
+}
+
+fn main() {
+    g();
+}
-- 
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