review request: annotate tests

Author: estebank

tests/ui/consts/const-eval/heap/alloc_intrinsic_errors.rs

@@ -5,7 +5,7 @@ use std::intrinsics;
 const FOO: i32 = foo(); //~ error: evaluation of constant value failed
 const fn foo() -> i32 {
     unsafe {
-        let _ = intrinsics::const_allocate(4, 3) as *mut i32;
+        let _ = intrinsics::const_allocate(4, 3) as *mut i32; //~ inside `foo`
     }
     1
 }

tests/ui/consts/const-eval/unwind-abort.rs

@@ -1,5 +1,5 @@
 const extern "C" fn foo() {
-    panic!()
+    panic!() //~ inside `foo`
 }
 
 const _: () = foo(); //~ ERROR evaluation of constant value failed

tests/ui/consts/const-eval/validate_uninhabited_zsts.rs

@@ -1,5 +1,5 @@
 const fn foo() -> ! {
-    unsafe { std::mem::transmute(()) }
+    unsafe { std::mem::transmute(()) } //~ inside `foo`
 }
 
 // Type defined in a submodule, so that it is not "visibly"