Update try-block tests to work under NLL

Author: scottmcm

src/test/compile-fail/try-block-bad-lifetime.rs

@@ -12,18 +12,22 @@
 
 #![feature(try_blocks)]
 
+#![inline(never)]
+fn do_something_with<T>(_x: T) {}
+
 // This test checks that borrows made and returned inside try blocks are properly constrained
 pub fn main() {
     {
         // Test that borrows returned from a try block must be valid for the lifetime of the
         // result variable
-        let _result: Result<(), &str> = try {
+        let result: Result<(), &str> = try {
             let my_string = String::from("");
             let my_str: & str = & my_string;
             //~^ ERROR `my_string` does not live long enough
             Err(my_str) ?;
             Err("") ?;
         };
+        do_something_with(result);
     }
 
     {

src/test/compile-fail/try-block-maybe-bad-lifetime.rs

@@ -12,6 +12,9 @@
 
 #![feature(try_blocks)]
 
+#![inline(never)]
+fn do_something_with<T>(_x: T) {}
+
 // This test checks that borrows made and returned inside try blocks are properly constrained
 pub fn main() {
     {
@@ -21,9 +24,9 @@ pub fn main() {
             Err(())?;
             &i
         };
-        x.ok().cloned();
         i = 0; //~ ERROR cannot assign to `i` because it is borrowed
         let _ = i;
+        do_something_with(x);
     }
 
     {
@@ -32,20 +35,21 @@ pub fn main() {
             Err(())?;
             ::std::mem::drop(x);
         };
-        println!("{}", x); //~ ERROR use of moved value: `x`
+        println!("{}", x); //~ ERROR borrow of moved value: `x`
     }
 
     {
         // Test that a borrow which *might* be assigned to an outer variable still freezes
         // its referent
         let mut i = 222;
-        let j;
-        let x: Result<(), ()> = try {
+        let mut j = &-1;
+        let _x: Result<(), ()> = try {
             Err(())?;
             j = &i;
         };
         i = 0; //~ ERROR cannot assign to `i` because it is borrowed
         let _ = i;
+        do_something_with(j);
     }
 }
 

src/test/compile-fail/try-block-opt-init.rs

@@ -22,6 +22,6 @@ pub fn main() {
         Ok::<(), ()>(())?;
         use_val(cfg_res);
     };
-    assert_eq!(cfg_res, 5); //~ ERROR use of possibly uninitialized variable
+    assert_eq!(cfg_res, 5); //~ ERROR borrow of possibly uninitialized variable: `cfg_res`
 }