Auto merge of #26616 - Manishearth:rollup, r=Manishearth

- Successful merges: #26565, #26584, #26596, #26603
- Failed merges:

Author: bors

Diff for: .gitignore

@@ -19,6 +19,7 @@
 *.exe
 *.fn
 *.html
+*.kdev4
 *.ky
 *.ll
 *.llvm

Diff for: src/doc/reference.md

@@ -1047,11 +1047,8 @@ This is a list of behavior not considered *unsafe* in Rust terms, but that may
 be undesired.
 
 * Deadlocks
-* Reading data from private fields (`std::repr`)
 * Leaks of memory and other resources
 * Exiting without calling destructors
-* Sending signals
-* Accessing/modifying the file system
 * Integer overflow
   - Overflow is considered "unexpected" behavior and is always user-error,
     unless the `wrapping` primitives are used. In non-optimized builds, the compiler

Diff for: src/doc/trpl/unsafe.md

@@ -12,7 +12,7 @@ two contexts. The first one is to mark a function as unsafe:
 
 ```rust
 unsafe fn danger_will_robinson() {
-    // scary stuff 
+    // scary stuff
 }
 ```
 
@@ -68,11 +68,8 @@ Whew! That’s a bunch of stuff. It’s also important to notice all kinds of
 behaviors that are certainly bad, but are expressly _not_ unsafe:
 
 * Deadlocks
-* Reading data from private fields
-* Leaks due to reference count cycles
+* Leaks of memory or other resources
 * Exiting without calling destructors
-* Sending signals
-* Accessing/modifying the file system
 * Integer overflow
 
 Rust cannot prevent all kinds of software problems. Buggy code can and will be

Diff for: src/libstd/macros.rs

@@ -14,28 +14,6 @@
 //! library. Each macro is available for use when linking against the standard
 //! library.
 
-/// The entry point for panic of Rust threads.
-///
-/// This macro is used to inject panic into a Rust thread, causing the thread to
-/// unwind and panic entirely. Each thread's panic can be reaped as the
-/// `Box<Any>` type, and the single-argument form of the `panic!` macro will be
-/// the value which is transmitted.
-///
-/// The multi-argument form of this macro panics with a string and has the
-/// `format!` syntax for building a string.
-///
-/// # Examples
-///
-/// ```should_panic
-/// # #![allow(unreachable_code)]
-/// panic!();
-/// panic!("this is a terrible mistake!");
-/// panic!(4); // panic with the value of 4 to be collected elsewhere
-/// panic!("this is a {} {message}", "fancy", message = "message");
-/// ```
-#[macro_export]
-#[stable(feature = "rust1", since = "1.0.0")]
-#[allow_internal_unstable]
 /// The entry point for panic of Rust threads.
 ///
 /// This macro is used to inject panic into a Rust thread, causing the thread to