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/weird-exprs.rs | 230 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 230 insertions(+)
 create mode 100644 tests/ui/weird-exprs.rs

(limited to 'tests/ui/weird-exprs.rs')

diff --git a/tests/ui/weird-exprs.rs b/tests/ui/weird-exprs.rs
new file mode 100644
index 000000000..d65703ef5
--- /dev/null
+++ b/tests/ui/weird-exprs.rs
@@ -0,0 +1,230 @@
+// run-pass
+
+#![feature(generators)]
+#![feature(unboxed_closures, fn_traits)]
+
+#![allow(non_camel_case_types)]
+#![allow(dead_code)]
+#![allow(unreachable_code)]
+#![allow(unused_braces, unused_must_use, unused_parens)]
+#![allow(uncommon_codepoints, confusable_idents)]
+#![allow(unreachable_patterns)]
+
+#![recursion_limit = "256"]
+
+use std::cell::Cell;
+use std::mem::swap;
+
+// Just a grab bag of stuff that you wouldn't want to actually write.
+
+fn strange() -> bool { let _x: bool = return true; }
+
+fn funny() {
+    fn f(_x: ()) { }
+    f(return);
+}
+
+fn what() {
+    fn the(x: &Cell<bool>) {
+        return while !x.get() { x.set(true); };
+    }
+    let i = &Cell::new(false);
+    let dont = {||the(i)};
+    dont();
+    assert!((i.get()));
+}
+
+fn zombiejesus() {
+    loop {
+        while (return) {
+            if (return) {
+                match (return) {
+                    1 => {
+                        if (return) {
+                            return
+                        } else {
+                            return
+                        }
+                    }
+                    _ => { return }
+                };
+            } else if (return) {
+                return;
+            }
+        }
+        if (return) { break; }
+    }
+}
+
+fn notsure() {
+    let mut _x: isize;
+    let mut _y = (_x = 0) == (_x = 0);
+    let mut _z = (_x = 0) < (_x = 0);
+    let _a = (_x += 0) == (_x = 0);
+    let _b = swap(&mut _y, &mut _z) == swap(&mut _y, &mut _z);
+}
+
+fn canttouchthis() -> usize {
+    fn p() -> bool { true }
+    let _a = (assert!((true)) == (assert!(p())));
+    let _c = (assert!((p())) == ());
+    let _b: bool = (println!("{}", 0) == (return 0));
+}
+
+fn angrydome() {
+    loop { if break { } }
+    let mut i = 0;
+    loop { i += 1; if i == 1 { match (continue) { 1 => { }, _ => panic!("wat") } }
+      break; }
+}
+
+fn evil_lincoln() { let _evil = println!("lincoln"); }
+
+fn dots() {
+    assert_eq!(String::from(".................................................."),
+               format!("{:?}", .. .. .. .. .. .. .. .. .. .. .. .. ..
+                               .. .. .. .. .. .. .. .. .. .. .. ..));
+}
+
+fn u8(u8: u8) {
+    if u8 != 0u8 {
+        assert_eq!(8u8, {
+            macro_rules! u8 {
+                (u8) => {
+                    mod u8 {
+                        pub fn u8<'u8: 'u8 + 'u8>(u8: &'u8 u8) -> &'u8 u8 {
+                            "u8";
+                            u8
+                        }
+                    }
+                };
+            }
+
+            u8!(u8);
+            let &u8: &u8 = u8::u8(&8u8);
+            ::u8(0u8);
+            u8
+        });
+    }
+}
+
+fn fishy() {
+    assert_eq!(String::from("><>"),
+               String::<>::from::<>("><>").chars::<>().rev::<>().collect::<String>());
+}
+
+fn union() {
+    union union<'union> { union: &'union union<'union>, }
+}
+
+fn special_characters() {
+    let val = !((|(..):(_,_),(|__@_|__)|__)((&*"\\",'🤔')/**/,{})=={&[..=..][..];})//
+    ;
+    assert!(!val);
+}
+
+fn punch_card() -> impl std::fmt::Debug {
+    ..=..=.. ..    .. .. .. ..    .. .. .. ..    .. ..=.. ..
+    ..=.. ..=..    .. .. .. ..    .. .. .. ..    ..=..=..=..
+    ..=.. ..=..    ..=.. ..=..    .. ..=..=..    .. ..=.. ..
+    ..=..=.. ..    ..=.. ..=..    ..=.. .. ..    .. ..=.. ..
+    ..=.. ..=..    ..=.. ..=..    .. ..=.. ..    .. ..=.. ..
+    ..=.. ..=..    ..=.. ..=..    .. .. ..=..    .. ..=.. ..
+    ..=.. ..=..    .. ..=..=..    ..=..=.. ..    .. ..=.. ..
+}
+
+fn r#match() {
+    let val = match match match match match () {
+        () => ()
+    } {
+        () => ()
+    } {
+        () => ()
+    } {
+        () => ()
+    } {
+        () => ()
+    };
+    assert_eq!(val, ());
+}
+
+fn i_yield() {
+    static || {
+        yield yield yield yield yield yield yield yield yield;
+    };
+}
+
+fn match_nested_if() {
+    let val = match () {
+        () if if if if true {true} else {false} {true} else {false} {true} else {false} => true,
+        _ => false,
+    };
+    assert!(val);
+}
+
+fn monkey_barrel() {
+    let val = ()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=()=();
+    assert_eq!(val, ());
+}
+
+fn 𝚌𝚘𝚗𝚝𝚒𝚗𝚞𝚎() {
+    type 𝚕𝚘𝚘𝚙 = i32;
+    fn 𝚋𝚛𝚎𝚊𝚔() -> 𝚕𝚘𝚘𝚙 {
+        let 𝚛𝚎𝚝𝚞𝚛𝚗 = 42;
+        return 𝚛𝚎𝚝𝚞𝚛𝚗;
+    }
+    assert_eq!(loop {
+        break 𝚋𝚛𝚎𝚊𝚔 ();
+    }, 42);
+}
+
+fn function() {
+    struct foo;
+    impl FnOnce<()> for foo {
+        type Output = foo;
+        extern "rust-call" fn call_once(self, _args: ()) -> Self::Output {
+            foo
+        }
+    }
+    let foo = foo () ()() ()()() ()()()() ()()()()();
+}
+
+fn bathroom_stall() {
+    let mut i = 1;
+    matches!(2, _|_|_|_|_|_ if (i+=1) != (i+=1));
+    assert_eq!(i, 13);
+}
+
+fn closure_matching() {
+    let x = |_| Some(1);
+    let (|x| x) = match x(..) {
+        |_| Some(2) => |_| Some(3),
+        |_| _ => unreachable!(),
+    };
+    assert!(matches!(x(..), |_| Some(4)));
+}
+
+pub fn main() {
+    strange();
+    funny();
+    what();
+    zombiejesus();
+    notsure();
+    canttouchthis();
+    angrydome();
+    evil_lincoln();
+    dots();
+    u8(8u8);
+    fishy();
+    union();
+    special_characters();
+    punch_card();
+    r#match();
+    i_yield();
+    match_nested_if();
+    monkey_barrel();
+    𝚌𝚘𝚗𝚝𝚒𝚗𝚞𝚎();
+    function();
+    bathroom_stall();
+    closure_matching();
+}
-- 
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