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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs')
-rw-r--r--src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs122
1 files changed, 122 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs b/src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs
new file mode 100644
index 000000000..91916e748
--- /dev/null
+++ b/src/tools/clippy/tests/ui/semicolon_if_nothing_returned.rs
@@ -0,0 +1,122 @@
+#![warn(clippy::semicolon_if_nothing_returned)]
+#![allow(clippy::redundant_closure)]
+#![feature(label_break_value)]
+#![feature(let_else)]
+
+fn get_unit() {}
+
+// the functions below trigger the lint
+fn main() {
+ println!("Hello")
+}
+
+fn hello() {
+ get_unit()
+}
+
+fn basic101(x: i32) {
+ let y: i32;
+ y = x + 1
+}
+
+#[rustfmt::skip]
+fn closure_error() {
+ let _d = || {
+ hello()
+ };
+}
+
+#[rustfmt::skip]
+fn unsafe_checks_error() {
+ use std::mem::MaybeUninit;
+ use std::ptr;
+
+ let mut s = MaybeUninit::<String>::uninit();
+ let _d = || unsafe {
+ ptr::drop_in_place(s.as_mut_ptr())
+ };
+}
+
+// this is fine
+fn print_sum(a: i32, b: i32) {
+ println!("{}", a + b);
+ assert_eq!(true, false);
+}
+
+fn foo(x: i32) {
+ let y: i32;
+ if x < 1 {
+ y = 4;
+ } else {
+ y = 5;
+ }
+}
+
+fn bar(x: i32) {
+ let y: i32;
+ match x {
+ 1 => y = 4,
+ _ => y = 32,
+ }
+}
+
+fn foobar(x: i32) {
+ let y: i32;
+ 'label: {
+ y = x + 1;
+ }
+}
+
+fn loop_test(x: i32) {
+ let y: i32;
+ for &ext in &["stdout", "stderr", "fixed"] {
+ println!("{}", ext);
+ }
+}
+
+fn closure() {
+ let _d = || hello();
+}
+
+#[rustfmt::skip]
+fn closure_block() {
+ let _d = || { hello() };
+}
+
+unsafe fn some_unsafe_op() {}
+unsafe fn some_other_unsafe_fn() {}
+
+fn do_something() {
+ unsafe { some_unsafe_op() };
+
+ unsafe { some_other_unsafe_fn() };
+}
+
+fn unsafe_checks() {
+ use std::mem::MaybeUninit;
+ use std::ptr;
+
+ let mut s = MaybeUninit::<String>::uninit();
+ let _d = || unsafe { ptr::drop_in_place(s.as_mut_ptr()) };
+}
+
+// Issue #7768
+#[rustfmt::skip]
+fn macro_with_semicolon() {
+ macro_rules! repro {
+ () => {
+ while false {
+ }
+ };
+ }
+ repro!();
+}
+
+fn function_returning_option() -> Option<i32> {
+ Some(1)
+}
+
+// No warning
+fn let_else_stmts() {
+ let Some(x) = function_returning_option() else { return; };
+}