Auto merge of rust-lang#138841 - matthiaskrgr:rollup-bfkls57, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#138018 (rustdoc: Use own logic to print `#[repr(..)]` attributes in JSON output.)
 - rust-lang#138294 (Mark some std tests as requiring `panic = "unwind"`)
 - rust-lang#138468 (rustdoc js: add nonnull helper and typecheck src-script.js)
 - rust-lang#138675 (Add release notes for 1.85.1)
 - rust-lang#138765 (Fix Thread::set_name on cygwin)
 - rust-lang#138786 (Move some driver code around)
 - rust-lang#138793 (target spec check: better error when llvm-floatabi is missing)
 - rust-lang#138822 (De-Stabilize `file_lock`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

Diff for: std/src/fs.rs

@@ -665,6 +665,7 @@ impl File {
     /// # Examples
     ///
     /// ```no_run
+    /// #![feature(file_lock)]
     /// use std::fs::File;
     ///
     /// fn main() -> std::io::Result<()> {
@@ -673,7 +674,7 @@ impl File {
     ///     Ok(())
     /// }
     /// ```
-    #[stable(feature = "file_lock", since = "CURRENT_RUSTC_VERSION")]
+    #[unstable(feature = "file_lock", issue = "130994")]
     pub fn lock(&self) -> io::Result<()> {
         self.inner.lock()
     }
@@ -717,6 +718,7 @@ impl File {
     /// # Examples
     ///
     /// ```no_run
+    /// #![feature(file_lock)]
     /// use std::fs::File;
     ///
     /// fn main() -> std::io::Result<()> {
@@ -725,7 +727,7 @@ impl File {
     ///     Ok(())
     /// }
     /// ```
-    #[stable(feature = "file_lock", since = "CURRENT_RUSTC_VERSION")]
+    #[unstable(feature = "file_lock", issue = "130994")]
     pub fn lock_shared(&self) -> io::Result<()> {
         self.inner.lock_shared()
     }
@@ -774,6 +776,7 @@ impl File {
     /// # Examples
     ///
     /// ```no_run
+    /// #![feature(file_lock)]
     /// use std::fs::File;
     ///
     /// fn main() -> std::io::Result<()> {
@@ -782,7 +785,7 @@ impl File {
     ///     Ok(())
     /// }
     /// ```
-    #[stable(feature = "file_lock", since = "CURRENT_RUSTC_VERSION")]
+    #[unstable(feature = "file_lock", issue = "130994")]
     pub fn try_lock(&self) -> io::Result<bool> {
         self.inner.try_lock()
     }
@@ -830,6 +833,7 @@ impl File {
     /// # Examples
     ///
     /// ```no_run
+    /// #![feature(file_lock)]
     /// use std::fs::File;
     ///
     /// fn main() -> std::io::Result<()> {
@@ -838,7 +842,7 @@ impl File {
     ///     Ok(())
     /// }
     /// ```
-    #[stable(feature = "file_lock", since = "CURRENT_RUSTC_VERSION")]
+    #[unstable(feature = "file_lock", issue = "130994")]
     pub fn try_lock_shared(&self) -> io::Result<bool> {
         self.inner.try_lock_shared()
     }
@@ -866,6 +870,7 @@ impl File {
     /// # Examples
     ///
     /// ```no_run
+    /// #![feature(file_lock)]
     /// use std::fs::File;
     ///
     /// fn main() -> std::io::Result<()> {
@@ -875,7 +880,7 @@ impl File {
     ///     Ok(())
     /// }
     /// ```
-    #[stable(feature = "file_lock", since = "CURRENT_RUSTC_VERSION")]
+    #[unstable(feature = "file_lock", issue = "130994")]
     pub fn unlock(&self) -> io::Result<()> {
         self.inner.unlock()
     }

Diff for: std/src/sys/pal/unix/thread.rs

@@ -143,8 +143,8 @@ impl Thread {
     pub fn set_name(name: &CStr) {
         unsafe {
             cfg_if::cfg_if! {
-                if #[cfg(target_os = "linux")] {
-                    // Linux limits the allowed length of the name.
+                if #[cfg(any(target_os = "linux", target_os = "cygwin"))] {
+                    // Linux and Cygwin limits the allowed length of the name.
                     const TASK_COMM_LEN: usize = 16;
                     let name = truncate_cstr::<{ TASK_COMM_LEN }>(name);
                 } else {
@@ -346,6 +346,7 @@ impl Drop for Thread {
     target_os = "solaris",
     target_os = "illumos",
     target_os = "vxworks",
+    target_os = "cygwin",
     target_vendor = "apple",
 ))]
 fn truncate_cstr<const MAX_WITH_NUL: usize>(cstr: &CStr) -> [libc::c_char; MAX_WITH_NUL] {

Diff for: std/src/thread/tests.rs

@@ -108,6 +108,7 @@ fn test_is_finished() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_join_panic() {
     match thread::spawn(move || panic!()).join() {
         result::Result::Err(_) => (),
@@ -210,6 +211,7 @@ fn test_simple_newsched_spawn() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_try_panic_message_string_literal() {
     match thread::spawn(move || {
         panic!("static string");
@@ -226,6 +228,7 @@ fn test_try_panic_message_string_literal() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_try_panic_any_message_owned_str() {
     match thread::spawn(move || {
         panic_any("owned string".to_string());
@@ -242,6 +245,7 @@ fn test_try_panic_any_message_owned_str() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_try_panic_any_message_any() {
     match thread::spawn(move || {
         panic_any(Box::new(413u16) as Box<dyn Any + Send>);
@@ -260,6 +264,7 @@ fn test_try_panic_any_message_any() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_try_panic_any_message_unit_struct() {
     struct Juju;
 

Diff for: std/tests/sync/mutex.rs

@@ -118,6 +118,7 @@ fn test_into_inner_drop() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_into_inner_poison() {
     let m = new_poisoned_mutex(NonCopy(10));
 
@@ -135,6 +136,7 @@ fn test_get_cloned() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_get_cloned_poison() {
     let m = new_poisoned_mutex(Cloneable(10));
 
@@ -152,6 +154,7 @@ fn test_get_mut() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_get_mut_poison() {
     let mut m = new_poisoned_mutex(NonCopy(10));
 
@@ -179,6 +182,7 @@ fn test_set() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_set_poison() {
     fn inner<T>(mut init: impl FnMut() -> T, mut value: impl FnMut() -> T)
     where
@@ -217,6 +221,7 @@ fn test_replace() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_replace_poison() {
     fn inner<T>(mut init: impl FnMut() -> T, mut value: impl FnMut() -> T)
     where
@@ -261,6 +266,7 @@ fn test_mutex_arc_condvar() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_arc_condvar_poison() {
     let packet = Packet(Arc::new((Mutex::new(1), Condvar::new())));
     let packet2 = Packet(packet.0.clone());
@@ -290,6 +296,7 @@ fn test_arc_condvar_poison() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_mutex_arc_poison() {
     let arc = Arc::new(Mutex::new(1));
     assert!(!arc.is_poisoned());
@@ -304,6 +311,7 @@ fn test_mutex_arc_poison() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_mutex_arc_poison_mapped() {
     let arc = Arc::new(Mutex::new(1));
     assert!(!arc.is_poisoned());
@@ -335,6 +343,7 @@ fn test_mutex_arc_nested() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_mutex_arc_access_in_unwind() {
     let arc = Arc::new(Mutex::new(1));
     let arc2 = arc.clone();
@@ -381,6 +390,7 @@ fn test_mapping_mapped_guard() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn panic_while_mapping_unlocked_poison() {
     let lock = Mutex::new(());
 

Diff for: std/tests/sync/once.rs

@@ -52,6 +52,7 @@ fn stampede_once() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn poison_bad() {
     static O: Once = Once::new();
 
@@ -80,6 +81,7 @@ fn poison_bad() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn wait_for_force_to_finish() {
     static O: Once = Once::new();
 
@@ -137,6 +139,7 @@ fn wait() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn wait_on_poisoned() {
     let once = Once::new();
 
@@ -145,6 +148,7 @@ fn wait_on_poisoned() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn wait_force_on_poisoned() {
     let once = Once::new();
 

Diff for: std/tests/sync/once_lock.rs

@@ -77,8 +77,10 @@ fn get_or_try_init() {
     let cell: OnceLock<String> = OnceLock::new();
     assert!(cell.get().is_none());
 
-    let res = panic::catch_unwind(|| cell.get_or_try_init(|| -> Result<_, ()> { panic!() }));
-    assert!(res.is_err());
+    if cfg!(panic = "unwind") {
+        let res = panic::catch_unwind(|| cell.get_or_try_init(|| -> Result<_, ()> { panic!() }));
+        assert!(res.is_err());
+    }
     assert!(cell.get().is_none());
 
     assert_eq!(cell.get_or_try_init(|| Err(())), Err(()));

Diff for: std/tests/sync/rwlock.rs

@@ -73,6 +73,7 @@ fn frob() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_poison_wr() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -85,6 +86,7 @@ fn test_rw_arc_poison_wr() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_poison_mapped_w_r() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -98,6 +100,7 @@ fn test_rw_arc_poison_mapped_w_r() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_poison_ww() {
     let arc = Arc::new(RwLock::new(1));
     assert!(!arc.is_poisoned());
@@ -112,6 +115,7 @@ fn test_rw_arc_poison_ww() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_poison_mapped_w_w() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -126,6 +130,7 @@ fn test_rw_arc_poison_mapped_w_w() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_no_poison_rr() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -139,6 +144,7 @@ fn test_rw_arc_no_poison_rr() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_no_poison_mapped_r_r() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -153,6 +159,7 @@ fn test_rw_arc_no_poison_mapped_r_r() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_no_poison_rw() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -166,6 +173,7 @@ fn test_rw_arc_no_poison_rw() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_no_poison_mapped_r_w() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -218,6 +226,7 @@ fn test_rw_arc() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_rw_arc_access_in_unwind() {
     let arc = Arc::new(RwLock::new(1));
     let arc2 = arc.clone();
@@ -316,6 +325,7 @@ fn test_into_inner_drop() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_into_inner_poison() {
     let m = new_poisoned_rwlock(NonCopy(10));
 
@@ -333,6 +343,7 @@ fn test_get_cloned() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_get_cloned_poison() {
     let m = new_poisoned_rwlock(Cloneable(10));
 
@@ -350,6 +361,7 @@ fn test_get_mut() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_get_mut_poison() {
     let mut m = new_poisoned_rwlock(NonCopy(10));
 
@@ -377,6 +389,7 @@ fn test_set() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_set_poison() {
     fn inner<T>(mut init: impl FnMut() -> T, mut value: impl FnMut() -> T)
     where
@@ -415,6 +428,7 @@ fn test_replace() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn test_replace_poison() {
     fn inner<T>(mut init: impl FnMut() -> T, mut value: impl FnMut() -> T)
     where
@@ -482,6 +496,7 @@ fn test_mapping_mapped_guard() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn panic_while_mapping_read_unlocked_no_poison() {
     let lock = RwLock::new(());
 
@@ -551,6 +566,7 @@ fn panic_while_mapping_read_unlocked_no_poison() {
 }
 
 #[test]
+#[cfg_attr(not(panic = "unwind"), ignore = "test requires unwinding support")]
 fn panic_while_mapping_write_unlocked_poison() {
     let lock = RwLock::new(());