remove unneeded rustc_private feature

Author: RalfJung

tests/fail/concurrency/libc_pthread_create_main_terminate.rs

@@ -3,8 +3,6 @@
 
 // Check that we terminate the program when the main thread terminates.
 
-#![feature(rustc_private)]
-
 use std::{mem, ptr};
 
 extern "C" fn thread_start(_null: *mut libc::c_void) -> *mut libc::c_void {

tests/fail/concurrency/libc_pthread_join_detached.rs

@@ -2,8 +2,6 @@
 
 // Joining a detached thread is undefined behavior.
 
-#![feature(rustc_private)]
-
 use std::{mem, ptr};
 
 extern "C" fn thread_start(_null: *mut libc::c_void) -> *mut libc::c_void {

tests/fail/concurrency/libc_pthread_join_joined.rs

@@ -2,8 +2,6 @@
 
 // Joining an already joined thread is undefined behavior.
 
-#![feature(rustc_private)]
-
 use std::{mem, ptr};
 
 extern "C" fn thread_start(_null: *mut libc::c_void) -> *mut libc::c_void {

tests/fail/concurrency/libc_pthread_join_main.rs

@@ -2,8 +2,6 @@
 
 // Joining the main thread is undefined behavior.
 
-#![feature(rustc_private)]
-
 use std::{ptr, thread};
 
 fn main() {

tests/fail/concurrency/libc_pthread_join_multiple.rs

@@ -2,8 +2,6 @@
 
 // Joining the same thread from multiple threads is undefined behavior.
 
-#![feature(rustc_private)]
-
 use std::thread;
 use std::{mem, ptr};
 

tests/fail/concurrency/libc_pthread_join_self.rs

@@ -4,8 +4,6 @@
 
 // Joining itself is undefined behavior.
 
-#![feature(rustc_private)]
-
 use std::{ptr, thread};
 
 fn main() {

tests/fail/concurrency/too_few_args.rs

@@ -2,8 +2,6 @@
 
 //! The thread function must have exactly one argument.
 
-#![feature(rustc_private)]
-
 use std::{mem, ptr};
 
 extern "C" fn thread_start() -> *mut libc::c_void {

tests/fail/concurrency/too_many_args.rs

@@ -2,8 +2,6 @@
 
 //! The thread function must have exactly one argument.
 
-#![feature(rustc_private)]
-
 use std::{mem, ptr};
 
 extern "C" fn thread_start(_null: *mut libc::c_void, _x: i32) -> *mut libc::c_void {

tests/fail/concurrency/unwind_top_of_stack.rs

@@ -3,7 +3,7 @@
 
 //! Unwinding past the top frame of a stack is Undefined Behavior.
 
-#![feature(rustc_private, c_unwind)]
+#![feature(c_unwind)]
 
 use std::{mem, ptr};
 

tests/fail/shims/fs/close_stdout.rs

@@ -3,8 +3,6 @@
 
 // FIXME: standard handles cannot be closed (https://github.com/rust-lang/rust/issues/40032)
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         libc::close(1); //~ ERROR: cannot close stdout

tests/fail/shims/fs/isolated_stdin.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() -> std::io::Result<()> {
     let mut bytes = [0u8; 512];
     unsafe {

tests/fail/shims/fs/mkstemp_immutable_arg.rs

@@ -1,8 +1,6 @@
 //@ignore-target-windows: No libc on Windows
 //@compile-flags: -Zmiri-disable-isolation
 
-#![feature(rustc_private)]
-
 fn main() {
     test_mkstemp_immutable_arg();
 }

tests/fail/shims/fs/read_from_stdout.rs

@@ -1,8 +1,6 @@
 //@compile-flags: -Zmiri-disable-isolation
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() -> std::io::Result<()> {
     let mut bytes = [0u8; 512];
     unsafe {

tests/fail/shims/fs/unix_open_missing_required_mode.rs

@@ -1,8 +1,6 @@
 //@ignore-target-windows: No libc on Windows
 //@compile-flags: -Zmiri-disable-isolation
 
-#![feature(rustc_private)]
-
 fn main() {
     test_file_open_missing_needed_mode();
 }

tests/fail/shims/fs/write_to_stdin.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() -> std::io::Result<()> {
     let bytes = b"hello";
     unsafe {

tests/fail/shims/sync/libc_pthread_cond_double_destroy.rs

@@ -1,5 +1,4 @@
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 /// Test that destroying a pthread_cond twice fails, even without a check for number validity
 

tests/fail/shims/sync/libc_pthread_condattr_double_destroy.rs

@@ -1,5 +1,4 @@
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 /// Test that destroying a pthread_condattr twice fails, even without a check for number validity
 

tests/fail/shims/sync/libc_pthread_mutex_NULL_deadlock.rs

@@ -2,8 +2,6 @@
 //
 // Check that if we pass NULL attribute, then we get the default mutex type.
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         let mut mutex: libc::pthread_mutex_t = std::mem::zeroed();

tests/fail/shims/sync/libc_pthread_mutex_deadlock.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/shims/sync/libc_pthread_mutex_default_deadlock.rs

@@ -2,8 +2,6 @@
 //
 // Check that if we do not set the mutex type, it is the default.
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         let mutexattr: libc::pthread_mutexattr_t = std::mem::zeroed();

tests/fail/shims/sync/libc_pthread_mutex_destroy_locked.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         let mut mutexattr: libc::pthread_mutexattr_t = std::mem::zeroed();

tests/fail/shims/sync/libc_pthread_mutex_double_destroy.rs

@@ -1,5 +1,4 @@
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 /// Test that destroying a pthread_mutex twice fails, even without a check for number validity
 

tests/fail/shims/sync/libc_pthread_mutex_normal_deadlock.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         let mut mutexattr: libc::pthread_mutexattr_t = std::mem::zeroed();

tests/fail/shims/sync/libc_pthread_mutex_normal_unlock_unlocked.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     unsafe {
         let mut mutexattr: libc::pthread_mutexattr_t = std::mem::zeroed();

tests/fail/shims/sync/libc_pthread_mutex_wrong_owner.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/shims/sync/libc_pthread_mutexattr_double_destroy.rs

@@ -1,5 +1,4 @@
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 /// Test that destroying a pthread_mutexattr twice fails, even without a check for number validity
 

tests/fail/shims/sync/libc_pthread_rwlock_destroy_read_locked.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_destroy_write_locked.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_double_destroy.rs

@@ -1,5 +1,4 @@
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 /// Test that destroying a pthread_rwlock twice fails, even without a check for number validity
 

tests/fail/shims/sync/libc_pthread_rwlock_read_write_deadlock_single_thread.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_read_wrong_owner.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/shims/sync/libc_pthread_rwlock_unlock_unlocked.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_write_read_deadlock.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/shims/sync/libc_pthread_rwlock_write_read_deadlock_single_thread.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_write_write_deadlock.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/shims/sync/libc_pthread_rwlock_write_write_deadlock_single_thread.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 fn main() {
     let rw = std::cell::UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER);
     unsafe {

tests/fail/shims/sync/libc_pthread_rwlock_write_wrong_owner.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::cell::UnsafeCell;
 use std::sync::Arc;
 use std::thread;

tests/fail/unsupported_signal.rs

@@ -1,7 +1,6 @@
 //! `signal()` is special on Linux and macOS that it's only supported within libstd.
 //! The implementation is not complete enough to permit user code to call it.
 //@ignore-target-windows: No libc on Windows
-#![feature(rustc_private)]
 
 fn main() {
     unsafe {

tests/panic/unsupported_syscall.rs

@@ -1,7 +1,6 @@
 //@ignore-target-windows: No libc on Windows
 //@ignore-target-apple: `syscall` is not supported on macOS
 //@compile-flags: -Zmiri-panic-on-unsupported
-#![feature(rustc_private)]
 
 fn main() {
     unsafe {

tests/pass/calloc.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use core::slice;
 
 fn main() {

tests/pass/concurrency/libc_pthread_cond.rs

@@ -2,8 +2,6 @@
 //@ignore-target-apple: pthread_condattr_setclock is not supported on MacOS.
 //@compile-flags: -Zmiri-disable-isolation
 
-#![feature(rustc_private)]
-
 /// Test that conditional variable timeouts are working properly with both
 /// monotonic and system clocks.
 use std::mem::MaybeUninit;

tests/pass/concurrency/linux-futex.rs

@@ -1,8 +1,6 @@
 //@only-target-linux
 //@compile-flags: -Zmiri-disable-isolation
 
-#![feature(rustc_private)]
-
 use std::mem::MaybeUninit;
 use std::ptr;
 use std::sync::atomic::AtomicI32;

tests/pass/concurrency/tls_pthread_drop_order.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use std::mem;
 use std::ptr;
 

tests/pass/foreign-fn-linkname.rs

@@ -1,5 +1,4 @@
 //ignore-windows: Uses POSIX APIs
-#![feature(rustc_private)]
 
 use std::ffi::CString;
 

tests/pass/malloc.rs

@@ -1,7 +1,5 @@
 //@ignore-target-windows: No libc on Windows
 
-#![feature(rustc_private)]
-
 use core::{ptr, slice};
 
 fn main() {

tests/pass/regions-mock-trans.rs

@@ -1,7 +1,5 @@
 //ignore-windows: Uses POSIX APIs
 
-#![feature(rustc_private)]
-
 use std::mem;
 
 struct Arena(());

tests/pass/shims/fs.rs

@@ -1,7 +1,6 @@
 //@ignore-target-windows: File handling is not implemented yet
 //@compile-flags: -Zmiri-disable-isolation
 
-#![feature(rustc_private)]
 #![feature(io_error_more)]
 #![feature(io_error_uncategorized)]
 

tests/pass/shims/fs_with_isolation.rs

@@ -2,8 +2,6 @@
 //@compile-flags: -Zmiri-isolation-error=warn-nobacktrace
 //@normalize-stderr-test: "(stat(x)?)" -> "$$STAT"
 
-#![feature(rustc_private)]
-
 use std::ffi::CString;
 use std::fs::{self, File};
 use std::io::{Error, ErrorKind};

tests/pass/shims/linux-getrandom-without-isolation.rs

@@ -1,6 +1,5 @@
 //@only-target-linux
 //@compile-flags: -Zmiri-disable-isolation
-#![feature(rustc_private)]
 
 use std::ptr;