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/tools/clippy/tests/ui/implicit_hasher.rs | 102 +++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 src/tools/clippy/tests/ui/implicit_hasher.rs

(limited to 'src/tools/clippy/tests/ui/implicit_hasher.rs')

diff --git a/src/tools/clippy/tests/ui/implicit_hasher.rs b/src/tools/clippy/tests/ui/implicit_hasher.rs
new file mode 100644
index 000000000..fd96ca3f4
--- /dev/null
+++ b/src/tools/clippy/tests/ui/implicit_hasher.rs
@@ -0,0 +1,102 @@
+// aux-build:implicit_hasher_macros.rs
+#![deny(clippy::implicit_hasher)]
+#![allow(unused)]
+
+#[macro_use]
+extern crate implicit_hasher_macros;
+
+use std::cmp::Eq;
+use std::collections::{HashMap, HashSet};
+use std::hash::{BuildHasher, Hash};
+
+pub trait Foo<T>: Sized {
+    fn make() -> (Self, Self);
+}
+
+impl<K: Hash + Eq, V> Foo<i8> for HashMap<K, V> {
+    fn make() -> (Self, Self) {
+        // OK, don't suggest to modify these
+        let _: HashMap<i32, i32> = HashMap::new();
+        let _: HashSet<i32> = HashSet::new();
+
+        (HashMap::new(), HashMap::with_capacity(10))
+    }
+}
+impl<K: Hash + Eq, V> Foo<i8> for (HashMap<K, V>,) {
+    fn make() -> (Self, Self) {
+        ((HashMap::new(),), (HashMap::with_capacity(10),))
+    }
+}
+impl Foo<i16> for HashMap<String, String> {
+    fn make() -> (Self, Self) {
+        (HashMap::new(), HashMap::with_capacity(10))
+    }
+}
+
+impl<K: Hash + Eq, V, S: BuildHasher + Default> Foo<i32> for HashMap<K, V, S> {
+    fn make() -> (Self, Self) {
+        (HashMap::default(), HashMap::with_capacity_and_hasher(10, S::default()))
+    }
+}
+impl<S: BuildHasher + Default> Foo<i64> for HashMap<String, String, S> {
+    fn make() -> (Self, Self) {
+        (HashMap::default(), HashMap::with_capacity_and_hasher(10, S::default()))
+    }
+}
+
+impl<T: Hash + Eq> Foo<i8> for HashSet<T> {
+    fn make() -> (Self, Self) {
+        (HashSet::new(), HashSet::with_capacity(10))
+    }
+}
+impl Foo<i16> for HashSet<String> {
+    fn make() -> (Self, Self) {
+        (HashSet::new(), HashSet::with_capacity(10))
+    }
+}
+
+impl<T: Hash + Eq, S: BuildHasher + Default> Foo<i32> for HashSet<T, S> {
+    fn make() -> (Self, Self) {
+        (HashSet::default(), HashSet::with_capacity_and_hasher(10, S::default()))
+    }
+}
+impl<S: BuildHasher + Default> Foo<i64> for HashSet<String, S> {
+    fn make() -> (Self, Self) {
+        (HashSet::default(), HashSet::with_capacity_and_hasher(10, S::default()))
+    }
+}
+
+pub fn foo(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {}
+
+macro_rules! gen {
+    (impl) => {
+        impl<K: Hash + Eq, V> Foo<u8> for HashMap<K, V> {
+            fn make() -> (Self, Self) {
+                (HashMap::new(), HashMap::with_capacity(10))
+            }
+        }
+    };
+
+    (fn $name:ident) => {
+        pub fn $name(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {}
+    };
+}
+#[rustfmt::skip]
+gen!(impl);
+gen!(fn bar);
+
+// When the macro is in a different file, the suggestion spans can't be combined properly
+// and should not cause an ICE
+// See #2707
+#[macro_use]
+#[path = "auxiliary/test_macro.rs"]
+pub mod test_macro;
+__implicit_hasher_test_macro!(impl<K, V> for HashMap<K, V> where V: test_macro::A);
+
+// #4260
+implicit_hasher_fn!();
+
+// #7712
+pub async fn election_vote(_data: HashMap<i32, i32>) {}
+
+fn main() {}
-- 
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