Auto merge of rust-lang#126038 - matthiaskrgr:rollup-h4rm3x2, r=matthiaskrgr

Rollup of 9 pull requests

Successful merges:

 - rust-lang#124840 (resolve: mark it undetermined if single import is not has any bindings)
 - rust-lang#125622 (Winnow private method candidates instead of assuming any candidate of the right name will apply)
 - rust-lang#125648 (Remove unused(?) `~/rustsrc` folder from docker script)
 - rust-lang#125672 (Add more ABI test cases to miri (RFC 3391))
 - rust-lang#125800 (Fix `mut` static task queue in SGX target)
 - rust-lang#125871 (Orphanck[old solver]: Consider opaque types to never cover type parameters)
 - rust-lang#125893 (Handle all GVN binops in a single place.)
 - rust-lang#126008 (Port `tests/run-make-fulldeps/issue-19371` to ui-fulldeps)
 - rust-lang#126032 (Update description of the `IsTerminal` example)

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

Author: bors

std/src/io/stdio.rs

@@ -1190,9 +1190,8 @@ pub trait IsTerminal: crate::sealed::Sealed {
     ///
     /// - If you run this example by piping some text to it, e.g. `echo "foo" | path/to/executable`
     ///   it will print: `Hello foo`.
-    /// - If you instead run the example interactively by running the executable directly, it will
-    ///   panic with the message "Expected input to be piped to the process".
-    ///
+    /// - If you instead run the example interactively by running `path/to/executable` directly, it will
+    ///   prompt for input.
     ///
     /// [changes]: io#platform-specific-behavior
     /// [`Stdin`]: crate::io::Stdin

std/src/sys/pal/sgx/thread.rs

@@ -15,7 +15,7 @@ pub use self::task_queue::JoinNotifier;
 
 mod task_queue {
     use super::wait_notify;
-    use crate::sync::{Mutex, MutexGuard, Once};
+    use crate::sync::{Mutex, MutexGuard};
 
     pub type JoinHandle = wait_notify::Waiter;
 
@@ -28,12 +28,12 @@ mod task_queue {
     }
 
     pub(super) struct Task {
-        p: Box<dyn FnOnce()>,
+        p: Box<dyn FnOnce() + Send>,
         done: JoinNotifier,
     }
 
     impl Task {
-        pub(super) fn new(p: Box<dyn FnOnce()>) -> (Task, JoinHandle) {
+        pub(super) fn new(p: Box<dyn FnOnce() + Send>) -> (Task, JoinHandle) {
             let (done, recv) = wait_notify::new();
             let done = JoinNotifier(Some(done));
             (Task { p, done }, recv)
@@ -45,18 +45,12 @@ mod task_queue {
         }
     }
 
-    #[cfg_attr(test, linkage = "available_externally")]
-    #[export_name = "_ZN16__rust_internals3std3sys3sgx6thread15TASK_QUEUE_INITE"]
-    static TASK_QUEUE_INIT: Once = Once::new();
     #[cfg_attr(test, linkage = "available_externally")]
     #[export_name = "_ZN16__rust_internals3std3sys3sgx6thread10TASK_QUEUEE"]
-    static mut TASK_QUEUE: Option<Mutex<Vec<Task>>> = None;
+    static TASK_QUEUE: Mutex<Vec<Task>> = Mutex::new(Vec::new());
 
     pub(super) fn lock() -> MutexGuard<'static, Vec<Task>> {
-        unsafe {
-            TASK_QUEUE_INIT.call_once(|| TASK_QUEUE = Some(Default::default()));
-            TASK_QUEUE.as_ref().unwrap().lock().unwrap()
-        }
+        TASK_QUEUE.lock().unwrap()
     }
 }
 
@@ -101,7 +95,7 @@ pub mod wait_notify {
 
 impl Thread {
     // unsafe: see thread::Builder::spawn_unchecked for safety requirements
-    pub unsafe fn new(_stack: usize, p: Box<dyn FnOnce()>) -> io::Result<Thread> {
+    pub unsafe fn new(_stack: usize, p: Box<dyn FnOnce() + Send>) -> io::Result<Thread> {
         let mut queue_lock = task_queue::lock();
         unsafe { usercalls::launch_thread()? };
         let (task, handle) = task_queue::Task::new(p);

std/src/thread/mod.rs

@@ -561,7 +561,8 @@ impl Builder {
         let main = Box::new(main);
         // SAFETY: dynamic size and alignment of the Box remain the same. See below for why the
         // lifetime change is justified.
-        let main = unsafe { Box::from_raw(Box::into_raw(main) as *mut (dyn FnOnce() + 'static)) };
+        let main =
+            unsafe { Box::from_raw(Box::into_raw(main) as *mut (dyn FnOnce() + Send + 'static)) };
 
         Ok(JoinInner {
             // SAFETY:
@@ -1544,7 +1545,7 @@ struct Packet<'scope, T> {
 // The type `T` should already always be Send (otherwise the thread could not
 // have been created) and the Packet is Sync because all access to the
 // `UnsafeCell` synchronized (by the `join()` boundary), and `ScopeData` is Sync.
-unsafe impl<'scope, T: Sync> Sync for Packet<'scope, T> {}
+unsafe impl<'scope, T: Send> Sync for Packet<'scope, T> {}
 
 impl<'scope, T> Drop for Packet<'scope, T> {
     fn drop(&mut self) {