Fix fn_to_numeric_cast UI tests

This collapses both lint tests into one file.
Somehow allowing the other lint in the respective files did not work
correctly. Maybe that's fixed as part of fixing #3198.

Author: phansch

tests/ui/fn_to_numeric_cast.rs

@@ -1,6 +1,7 @@
+// only-64bit
 #![feature(tool_lints)]
 
-#![warn(clippy::fn_to_numeric_cast)]
+#![warn(clippy::fn_to_numeric_cast, clippy::fn_to_numeric_cast_with_truncation)]
 
 fn foo() -> String { String::new() }
 

tests/ui/fn_to_numeric_cast.stderr

@@ -1,141 +1,143 @@
-error: casting function pointer `foo` to `i8`
- --> $DIR/fn_to_numeric_cast.rs:8:13
+error: casting function pointer `foo` to `i8`, which truncates the value
+ --> $DIR/fn_to_numeric_cast.rs:9:13
   |
-8 |     let _ = foo as i8;
+9 |     let _ = foo as i8;
   |             ^^^^^^^^^ help: try: `foo as usize`
   |
-  = note: `-D clippy::fn-to-numeric-cast` implied by `-D warnings`
+  = note: `-D clippy::fn-to-numeric-cast-with-truncation` implied by `-D warnings`
 
-error: casting function pointer `foo` to `i16`
- --> $DIR/fn_to_numeric_cast.rs:9:13
-  |
-9 |     let _ = foo as i16;
-  |             ^^^^^^^^^^ help: try: `foo as usize`
-
-error: casting function pointer `foo` to `i32`
+error: casting function pointer `foo` to `i16`, which truncates the value
   --> $DIR/fn_to_numeric_cast.rs:10:13
    |
-10 |     let _ = foo as i32;
+10 |     let _ = foo as i16;
    |             ^^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `foo` to `i64`
+error: casting function pointer `foo` to `i32`, which truncates the value
   --> $DIR/fn_to_numeric_cast.rs:11:13
    |
-11 |     let _ = foo as i64;
+11 |     let _ = foo as i32;
    |             ^^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `foo` to `i128`
+error: casting function pointer `foo` to `i64`
   --> $DIR/fn_to_numeric_cast.rs:12:13
    |
-12 |     let _ = foo as i128;
+12 |     let _ = foo as i64;
+   |             ^^^^^^^^^^ help: try: `foo as usize`
+   |
+   = note: `-D clippy::fn-to-numeric-cast` implied by `-D warnings`
+
+error: casting function pointer `foo` to `i128`
+  --> $DIR/fn_to_numeric_cast.rs:13:13
+   |
+13 |     let _ = foo as i128;
    |             ^^^^^^^^^^^ help: try: `foo as usize`
 
 error: casting function pointer `foo` to `isize`
-  --> $DIR/fn_to_numeric_cast.rs:13:13
+  --> $DIR/fn_to_numeric_cast.rs:14:13
    |
-13 |     let _ = foo as isize;
+14 |     let _ = foo as isize;
    |             ^^^^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `foo` to `u8`
-  --> $DIR/fn_to_numeric_cast.rs:15:13
+error: casting function pointer `foo` to `u8`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:16:13
    |
-15 |     let _ = foo as u8;
+16 |     let _ = foo as u8;
    |             ^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `foo` to `u16`
-  --> $DIR/fn_to_numeric_cast.rs:16:13
+error: casting function pointer `foo` to `u16`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:17:13
    |
-16 |     let _ = foo as u16;
+17 |     let _ = foo as u16;
    |             ^^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `foo` to `u32`
-  --> $DIR/fn_to_numeric_cast.rs:17:13
+error: casting function pointer `foo` to `u32`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:18:13
    |
-17 |     let _ = foo as u32;
+18 |     let _ = foo as u32;
    |             ^^^^^^^^^^ help: try: `foo as usize`
 
 error: casting function pointer `foo` to `u64`
-  --> $DIR/fn_to_numeric_cast.rs:18:13
+  --> $DIR/fn_to_numeric_cast.rs:19:13
    |
-18 |     let _ = foo as u64;
+19 |     let _ = foo as u64;
    |             ^^^^^^^^^^ help: try: `foo as usize`
 
 error: casting function pointer `foo` to `u128`
-  --> $DIR/fn_to_numeric_cast.rs:19:13
+  --> $DIR/fn_to_numeric_cast.rs:20:13
    |
-19 |     let _ = foo as u128;
+20 |     let _ = foo as u128;
    |             ^^^^^^^^^^^ help: try: `foo as usize`
 
-error: casting function pointer `abc` to `i8`
-  --> $DIR/fn_to_numeric_cast.rs:28:13
+error: casting function pointer `abc` to `i8`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:29:13
    |
-28 |     let _ = abc as i8;
+29 |     let _ = abc as i8;
    |             ^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `abc` to `i16`
-  --> $DIR/fn_to_numeric_cast.rs:29:13
+error: casting function pointer `abc` to `i16`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:30:13
    |
-29 |     let _ = abc as i16;
+30 |     let _ = abc as i16;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `abc` to `i32`
-  --> $DIR/fn_to_numeric_cast.rs:30:13
+error: casting function pointer `abc` to `i32`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:31:13
    |
-30 |     let _ = abc as i32;
+31 |     let _ = abc as i32;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
 error: casting function pointer `abc` to `i64`
-  --> $DIR/fn_to_numeric_cast.rs:31:13
+  --> $DIR/fn_to_numeric_cast.rs:32:13
    |
-31 |     let _ = abc as i64;
+32 |     let _ = abc as i64;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
 error: casting function pointer `abc` to `i128`
-  --> $DIR/fn_to_numeric_cast.rs:32:13
+  --> $DIR/fn_to_numeric_cast.rs:33:13
    |
-32 |     let _ = abc as i128;
+33 |     let _ = abc as i128;
    |             ^^^^^^^^^^^ help: try: `abc as usize`
 
 error: casting function pointer `abc` to `isize`
-  --> $DIR/fn_to_numeric_cast.rs:33:13
+  --> $DIR/fn_to_numeric_cast.rs:34:13
    |
-33 |     let _ = abc as isize;
+34 |     let _ = abc as isize;
    |             ^^^^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `abc` to `u8`
-  --> $DIR/fn_to_numeric_cast.rs:35:13
+error: casting function pointer `abc` to `u8`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:36:13
    |
-35 |     let _ = abc as u8;
+36 |     let _ = abc as u8;
    |             ^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `abc` to `u16`
-  --> $DIR/fn_to_numeric_cast.rs:36:13
+error: casting function pointer `abc` to `u16`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:37:13
    |
-36 |     let _ = abc as u16;
+37 |     let _ = abc as u16;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `abc` to `u32`
-  --> $DIR/fn_to_numeric_cast.rs:37:13
+error: casting function pointer `abc` to `u32`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:38:13
    |
-37 |     let _ = abc as u32;
+38 |     let _ = abc as u32;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
 error: casting function pointer `abc` to `u64`
-  --> $DIR/fn_to_numeric_cast.rs:38:13
+  --> $DIR/fn_to_numeric_cast.rs:39:13
    |
-38 |     let _ = abc as u64;
+39 |     let _ = abc as u64;
    |             ^^^^^^^^^^ help: try: `abc as usize`
 
 error: casting function pointer `abc` to `u128`
-  --> $DIR/fn_to_numeric_cast.rs:39:13
+  --> $DIR/fn_to_numeric_cast.rs:40:13
    |
-39 |     let _ = abc as u128;
+40 |     let _ = abc as u128;
    |             ^^^^^^^^^^^ help: try: `abc as usize`
 
-error: casting function pointer `f` to `i32`
-  --> $DIR/fn_to_numeric_cast.rs:46:5
+error: casting function pointer `f` to `i32`, which truncates the value
+  --> $DIR/fn_to_numeric_cast.rs:47:5
    |
-46 |     f as i32
+47 |     f as i32
    |     ^^^^^^^^ help: try: `f as usize`
 
 error: aborting due to 23 previous errors