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>
---
 .../ui/crate_level_checks/entrypoint_recursion.rs  | 11 ++++++++
 .../crate_level_checks/entrypoint_recursion.stderr | 11 ++++++++
 .../ui/crate_level_checks/no_std_main_recursion.rs | 33 ++++++++++++++++++++++
 .../tests/ui/crate_level_checks/no_std_swap.rs     | 14 +++++++++
 .../tests/ui/crate_level_checks/no_std_swap.stderr | 12 ++++++++
 .../ui/crate_level_checks/std_main_recursion.rs    |  6 ++++
 .../crate_level_checks/std_main_recursion.stderr   | 11 ++++++++
 7 files changed, 98 insertions(+)
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.stderr
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.rs
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.stderr
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.rs
 create mode 100644 src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.stderr

(limited to 'src/tools/clippy/tests/ui/crate_level_checks')

diff --git a/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs
new file mode 100644
index 000000000..1b3bcece6
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.rs
@@ -0,0 +1,11 @@
+// ignore-macos
+
+#![feature(rustc_attrs)]
+
+#[warn(clippy::main_recursion)]
+#[allow(unconditional_recursion)]
+#[rustc_main]
+fn a() {
+    println!("Hello, World!");
+    a();
+}
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.stderr b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.stderr
new file mode 100644
index 000000000..459cf12a1
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/entrypoint_recursion.stderr
@@ -0,0 +1,11 @@
+error: recursing into entrypoint `a`
+  --> $DIR/entrypoint_recursion.rs:10:5
+   |
+LL |     a();
+   |     ^
+   |
+   = note: `-D clippy::main-recursion` implied by `-D warnings`
+   = help: consider using another function for this recursion
+
+error: aborting due to previous error
+
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs b/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs
new file mode 100644
index 000000000..4a5c597dd
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/no_std_main_recursion.rs
@@ -0,0 +1,33 @@
+// compile-flags: -Clink-arg=-nostartfiles
+// ignore-macos
+// ignore-windows
+
+#![feature(lang_items, start, libc)]
+#![no_std]
+
+use core::panic::PanicInfo;
+use core::sync::atomic::{AtomicUsize, Ordering};
+
+static N: AtomicUsize = AtomicUsize::new(0);
+
+#[warn(clippy::main_recursion)]
+#[start]
+fn main(_argc: isize, _argv: *const *const u8) -> isize {
+    let x = N.load(Ordering::Relaxed);
+    N.store(x + 1, Ordering::Relaxed);
+
+    if x < 3 {
+        main(_argc, _argv);
+    }
+
+    0
+}
+
+#[allow(clippy::empty_loop)]
+#[panic_handler]
+fn panic(_info: &PanicInfo) -> ! {
+    loop {}
+}
+
+#[lang = "eh_personality"]
+extern "C" fn eh_personality() {}
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.rs b/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.rs
new file mode 100644
index 000000000..d3571eaf0
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.rs
@@ -0,0 +1,14 @@
+#![no_std]
+#![feature(lang_items, start, libc)]
+#![crate_type = "lib"]
+
+use core::panic::PanicInfo;
+
+#[warn(clippy::all)]
+fn main() {
+    let mut a = 42;
+    let mut b = 1337;
+
+    a = b;
+    b = a;
+}
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.stderr b/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.stderr
new file mode 100644
index 000000000..48152d8ad
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/no_std_swap.stderr
@@ -0,0 +1,12 @@
+error: this looks like you are trying to swap `a` and `b`
+  --> $DIR/no_std_swap.rs:12:5
+   |
+LL | /     a = b;
+LL | |     b = a;
+   | |_________^ help: try: `core::mem::swap(&mut a, &mut b)`
+   |
+   = note: `-D clippy::almost-swapped` implied by `-D warnings`
+   = note: or maybe you should use `core::mem::replace`?
+
+error: aborting due to previous error
+
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.rs b/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.rs
new file mode 100644
index 000000000..89ff66099
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.rs
@@ -0,0 +1,6 @@
+#[warn(clippy::main_recursion)]
+#[allow(unconditional_recursion)]
+fn main() {
+    println!("Hello, World!");
+    main();
+}
diff --git a/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.stderr b/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.stderr
new file mode 100644
index 000000000..0a260f9d2
--- /dev/null
+++ b/src/tools/clippy/tests/ui/crate_level_checks/std_main_recursion.stderr
@@ -0,0 +1,11 @@
+error: recursing into entrypoint `main`
+  --> $DIR/std_main_recursion.rs:5:5
+   |
+LL |     main();
+   |     ^^^^
+   |
+   = note: `-D clippy::main-recursion` implied by `-D warnings`
+   = help: consider using another function for this recursion
+
+error: aborting due to previous error
+
-- 
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