Auto merge of #1379 - RalfJung:macos-fn-name, r=RalfJung

make sure macos function has 'macos' in its name

also tiny README tweak

README.md

@@ -48,8 +48,8 @@ in your program, and cannot run all programs:
   has no access to most platform-specific APIs or FFI. A few APIs have been
   implemented (such as printing to stdout) but most have not: for example, Miri
   currently does not support SIMD or networking.
-* Miri currently does not check for data-races and most other concurrency
-  related issues.
+* Miri currently does not check for data-races and most other concurrency-related
+  issues.
 
 [rust]: https://www.rust-lang.org/
 [mir]: https://github.com/rust-lang/rfcs/blob/master/text/1211-mir.md

src/shims/foreign_items/posix/macos.rs

@@ -83,7 +83,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
                 let dtor = this.memory.get_fn(dtor)?.as_instance()?;
                 let data = this.read_scalar(args[1])?.not_undef()?;
                 let active_thread = this.get_active_thread()?;
-                this.machine.tls.set_thread_dtor(active_thread, dtor, data)?;
+                this.machine.tls.set_macos_thread_dtor(active_thread, dtor, data)?;
             }
 
             // Querying system information

src/shims/tls.rs

@@ -136,7 +136,7 @@ impl<'tcx> TlsData<'tcx> {
     /// implementation](https://github.com/opensource-apple/dyld/blob/195030646877261f0c8c7ad8b001f52d6a26f514/src/threadLocalVariables.c#L389):
     ///
     ///     // NOTE: this does not need locks because it only operates on current thread data
-    pub fn set_thread_dtor(
+    pub fn set_macos_thread_dtor(
         &mut self,
         thread: ThreadId,
         dtor: ty::Instance<'tcx>,