CommandExt::before_exec: deprecate safety in edition 2024

2 files changed, 28 insertions, 0 deletions

diff --git a/tests/ui/rust-2024/unsafe-before_exec.e2024.stderr b/tests/ui/rust-2024/unsafe-before_exec.e2024.stderr
new file mode 100644
index 00000000000..2798ccdefd0
--- /dev/null
+++ b/tests/ui/rust-2024/unsafe-before_exec.e2024.stderr
@@ -0,0 +1,11 @@
+error[E0133]: call to unsafe function `before_exec` is unsafe and requires unsafe block
+  --> $DIR/unsafe-before_exec.rs:14:5
+   |
+LL |     cmd.before_exec(|| Ok(()));
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
+   |
+   = note: consult the function's documentation for information on how to avoid undefined behavior
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0133`.
diff --git a/tests/ui/rust-2024/unsafe-before_exec.rs b/tests/ui/rust-2024/unsafe-before_exec.rs
new file mode 100644
index 00000000000..540394da80e
--- /dev/null
+++ b/tests/ui/rust-2024/unsafe-before_exec.rs
@@ -0,0 +1,17 @@
+//@ revisions: e2021 e2024
+//@ only-unix
+//@[e2021] edition: 2021
+//@[e2021] check-pass
+//@[e2024] edition: 2024
+//@[e2024] compile-flags: -Zunstable-options
+
+use std::process::Command;
+use std::os::unix::process::CommandExt;
+
+#[allow(deprecated)]
+fn main() {
+    let mut cmd = Command::new("sleep");
+    cmd.before_exec(|| Ok(()));
+    //[e2024]~^ ERROR call to unsafe function `before_exec` is unsafe
+    drop(cmd); // we don't actually run the command.
+}