fix libc join tests

Author: beepster4096

tests/fail/concurrency/libc_pthread_join_detached.stderr

@@ -1,8 +1,8 @@
-error: Undefined Behavior: trying to join a detached or already joined thread
+error: Undefined Behavior: trying to join a detached thread
   --> $DIR/libc_pthread_join_detached.rs:LL:CC
    |
-LL | ...   assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached thread
+LL |         assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached thread
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/concurrency/libc_pthread_join_joined.rs

@@ -17,6 +17,6 @@ fn main() {
         // assert_eq!(libc::pthread_attr_init(&mut attr), 0); FIXME: this function is not yet implemented.
         assert_eq!(libc::pthread_create(&mut native, &attr, thread_start, ptr::null_mut()), 0);
         assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
-        assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join a detached or already joined thread
+        assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join an already joined thread
     }
 }

tests/fail/concurrency/libc_pthread_join_joined.stderr

@@ -1,8 +1,8 @@
-error: Undefined Behavior: trying to join a detached or already joined thread
+error: Undefined Behavior: trying to join an already joined thread
   --> $DIR/libc_pthread_join_joined.rs:LL:CC
    |
-LL | ...   assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached or already joined thread
+LL |         assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join an already joined thread
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/concurrency/libc_pthread_join_main.rs

@@ -10,7 +10,7 @@ fn main() {
     let thread_id: libc::pthread_t = unsafe { libc::pthread_self() };
     let handle = thread::spawn(move || {
         unsafe {
-            assert_eq!(libc::pthread_join(thread_id, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join a detached or already joined thread
+            assert_eq!(libc::pthread_join(thread_id, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join a detached thread
         }
     });
     thread::yield_now();

tests/fail/concurrency/libc_pthread_join_main.stderr

@@ -1,8 +1,8 @@
-error: Undefined Behavior: trying to join a detached or already joined thread
+error: Undefined Behavior: trying to join a detached thread
   --> $DIR/libc_pthread_join_main.rs:LL:CC
    |
-LL | ...   assert_eq!(libc::pthread_join(thread_id, ptr::null_mut()), 0);
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached or already joined thread
+LL |             assert_eq!(libc::pthread_join(thread_id, ptr::null_mut()), 0);
+   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached thread
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/concurrency/libc_pthread_join_multiple.rs

@@ -23,7 +23,7 @@ fn main() {
         let mut native_copy: libc::pthread_t = mem::zeroed();
         ptr::copy_nonoverlapping(&native, &mut native_copy, 1);
         let handle = thread::spawn(move || {
-            assert_eq!(libc::pthread_join(native_copy, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join a detached or already joined thread
+            assert_eq!(libc::pthread_join(native_copy, ptr::null_mut()), 0); //~ ERROR: Undefined Behavior: trying to join an already joined thread
         });
         assert_eq!(libc::pthread_join(native, ptr::null_mut()), 0);
         handle.join().unwrap();

tests/fail/concurrency/libc_pthread_join_multiple.stderr

@@ -1,8 +1,8 @@
-error: Undefined Behavior: trying to join a detached or already joined thread
+error: Undefined Behavior: trying to join an already joined thread
   --> $DIR/libc_pthread_join_multiple.rs:LL:CC
    |
 LL | ...   assert_eq!(libc::pthread_join(native_copy, ptr::null_mut()), 0);
-   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join a detached or already joined thread
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trying to join an already joined thread
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information