Auto merge of rust-lang#3587 - flip1995:ui-testing, r=phansch

Use the -Zui-testing flag for compile-test tests

Like `@petrochenkov` suggested in rust-lang/rust-clippy#3581 (comment)

tests/compile-test.rs

@@ -55,7 +55,10 @@ fn config(mode: &str, dir: PathBuf) -> compiletest::Config {
         config.run_lib_path = rustc_lib_path();
         config.compile_lib_path = rustc_lib_path();
     }
-    config.target_rustcflags = Some(format!("-L {0} -L {0}/deps -Dwarnings", host_libs().display()));
+    config.target_rustcflags = Some(format!(
+        "-L {0} -L {0}/deps -Dwarnings -Zui-testing",
+        host_libs().display()
+    ));
 
     config.mode = cfg_mode;
     config.build_base = if rustc_test_suite().is_some() {

tests/ui-toml/toml_blacklist/conf_french_blacklisted_name.stderr

@@ -1,45 +1,45 @@
 error: use of a blacklisted/placeholder name `toto`
   --> $DIR/conf_french_blacklisted_name.rs:15:9
    |
-15 | fn test(toto: ()) {}
+LL | fn test(toto: ()) {}
    |         ^^^^
    |
    = note: `-D clippy::blacklisted-name` implied by `-D warnings`
 
 error: use of a blacklisted/placeholder name `toto`
   --> $DIR/conf_french_blacklisted_name.rs:18:9
    |
-18 |     let toto = 42;
+LL |     let toto = 42;
    |         ^^^^
 
 error: use of a blacklisted/placeholder name `tata`
   --> $DIR/conf_french_blacklisted_name.rs:19:9
    |
-19 |     let tata = 42;
+LL |     let tata = 42;
    |         ^^^^
 
 error: use of a blacklisted/placeholder name `titi`
   --> $DIR/conf_french_blacklisted_name.rs:20:9
    |
-20 |     let titi = 42;
+LL |     let titi = 42;
    |         ^^^^
 
 error: use of a blacklisted/placeholder name `toto`
   --> $DIR/conf_french_blacklisted_name.rs:26:10
    |
-26 |         (toto, Some(tata), titi @ Some(_)) => (),
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
    |          ^^^^
 
 error: use of a blacklisted/placeholder name `tata`
   --> $DIR/conf_french_blacklisted_name.rs:26:21
    |
-26 |         (toto, Some(tata), titi @ Some(_)) => (),
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
    |                     ^^^^
 
 error: use of a blacklisted/placeholder name `titi`
   --> $DIR/conf_french_blacklisted_name.rs:26:28
    |
-26 |         (toto, Some(tata), titi @ Some(_)) => (),
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
    |                            ^^^^
 
 error: aborting due to 7 previous errors

tests/ui-toml/toml_trivially_copy/test.stderr

@@ -1,15 +1,15 @@
 error: this argument is passed by reference, but would be more efficient if passed by value
   --> $DIR/test.rs:20:11
    |
-20 | fn bad(x: &u16, y: &Foo) {}
+LL | fn bad(x: &u16, y: &Foo) {}
    |           ^^^^ help: consider passing by value instead: `u16`
    |
    = note: `-D clippy::trivially-copy-pass-by-ref` implied by `-D warnings`
 
 error: this argument is passed by reference, but would be more efficient if passed by value
   --> $DIR/test.rs:20:20
    |
-20 | fn bad(x: &u16, y: &Foo) {}
+LL | fn bad(x: &u16, y: &Foo) {}
    |                    ^^^^ help: consider passing by value instead: `Foo`
 
 error: aborting due to 2 previous errors

tests/ui/absurd-extreme-comparisons.stderr

@@ -1,7 +1,7 @@
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:23:5
    |
-23 |     u <= 0;
+LL |     u <= 0;
    |     ^^^^^^
    |
    = note: `-D clippy::absurd-extreme-comparisons` implied by `-D warnings`
@@ -10,135 +10,135 @@ error: this comparison involving the minimum or maximum element for this type co
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:24:5
    |
-24 |     u <= Z;
+LL |     u <= Z;
    |     ^^^^^^
    |
    = help: because Z is the minimum value for this type, the case where the two sides are not equal never occurs, consider using u == Z instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:25:5
    |
-25 |     u < Z;
+LL |     u < Z;
    |     ^^^^^
    |
    = help: because Z is the minimum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:26:5
    |
-26 |     Z >= u;
+LL |     Z >= u;
    |     ^^^^^^
    |
    = help: because Z is the minimum value for this type, the case where the two sides are not equal never occurs, consider using Z == u instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:27:5
    |
-27 |     Z > u;
+LL |     Z > u;
    |     ^^^^^
    |
    = help: because Z is the minimum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:28:5
    |
-28 |     u > std::u32::MAX;
+LL |     u > std::u32::MAX;
    |     ^^^^^^^^^^^^^^^^^
    |
    = help: because std::u32::MAX is the maximum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:29:5
    |
-29 |     u >= std::u32::MAX;
+LL |     u >= std::u32::MAX;
    |     ^^^^^^^^^^^^^^^^^^
    |
    = help: because std::u32::MAX is the maximum value for this type, the case where the two sides are not equal never occurs, consider using u == std::u32::MAX instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:30:5
    |
-30 |     std::u32::MAX < u;
+LL |     std::u32::MAX < u;
    |     ^^^^^^^^^^^^^^^^^
    |
    = help: because std::u32::MAX is the maximum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:31:5
    |
-31 |     std::u32::MAX <= u;
+LL |     std::u32::MAX <= u;
    |     ^^^^^^^^^^^^^^^^^^
    |
    = help: because std::u32::MAX is the maximum value for this type, the case where the two sides are not equal never occurs, consider using std::u32::MAX == u instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:32:5
    |
-32 |     1-1 > u;
+LL |     1-1 > u;
    |     ^^^^^^^
    |
    = help: because 1-1 is the minimum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:33:5
    |
-33 |     u >= !0;
+LL |     u >= !0;
    |     ^^^^^^^
    |
    = help: because !0 is the maximum value for this type, the case where the two sides are not equal never occurs, consider using u == !0 instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:34:5
    |
-34 |     u <= 12 - 2*6;
+LL |     u <= 12 - 2*6;
    |     ^^^^^^^^^^^^^
    |
    = help: because 12 - 2*6 is the minimum value for this type, the case where the two sides are not equal never occurs, consider using u == 12 - 2*6 instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:36:5
    |
-36 |     i < -127 - 1;
+LL |     i < -127 - 1;
    |     ^^^^^^^^^^^^
    |
    = help: because -127 - 1 is the minimum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:37:5
    |
-37 |     std::i8::MAX >= i;
+LL |     std::i8::MAX >= i;
    |     ^^^^^^^^^^^^^^^^^
    |
    = help: because std::i8::MAX is the maximum value for this type, this comparison is always true
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:38:5
    |
-38 |     3-7 < std::i32::MIN;
+LL |     3-7 < std::i32::MIN;
    |     ^^^^^^^^^^^^^^^^^^^
    |
    = help: because std::i32::MIN is the minimum value for this type, this comparison is always false
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:40:5
    |
-40 |     b >= true;
+LL |     b >= true;
    |     ^^^^^^^^^
    |
    = help: because true is the maximum value for this type, the case where the two sides are not equal never occurs, consider using b == true instead
 
 error: this comparison involving the minimum or maximum element for this type contains a case that is always true or always false
   --> $DIR/absurd-extreme-comparisons.rs:41:5
    |
-41 |     false > b;
+LL |     false > b;
    |     ^^^^^^^^^
    |
    = help: because false is the minimum value for this type, this comparison is always false
 
 error: <-comparison of unit values detected. This will always be false
   --> $DIR/absurd-extreme-comparisons.rs:44:5
    |
-44 |     () < {};
+LL |     () < {};
    |     ^^^^^^^
    |
    = note: #[deny(clippy::unit_cmp)] on by default

tests/ui/approx_const.stderr

@@ -1,117 +1,117 @@
 error: approximate value of `f{32, 64}::consts::E` found. Consider using it directly
   --> $DIR/approx_const.rs:13:16
    |
-13 |     let my_e = 2.7182;
+LL |     let my_e = 2.7182;
    |                ^^^^^^
    |
    = note: `-D clippy::approx-constant` implied by `-D warnings`
 
 error: approximate value of `f{32, 64}::consts::E` found. Consider using it directly
   --> $DIR/approx_const.rs:14:20
    |
-14 |     let almost_e = 2.718;
+LL |     let almost_e = 2.718;
    |                    ^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_1_PI` found. Consider using it directly
   --> $DIR/approx_const.rs:17:24
    |
-17 |     let my_1_frac_pi = 0.3183;
+LL |     let my_1_frac_pi = 0.3183;
    |                        ^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
   --> $DIR/approx_const.rs:20:28
    |
-20 |     let my_frac_1_sqrt_2 = 0.70710678;
+LL |     let my_frac_1_sqrt_2 = 0.70710678;
    |                            ^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_1_SQRT_2` found. Consider using it directly
   --> $DIR/approx_const.rs:21:32
    |
-21 |     let almost_frac_1_sqrt_2 = 0.70711;
+LL |     let almost_frac_1_sqrt_2 = 0.70711;
    |                                ^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_2_PI` found. Consider using it directly
   --> $DIR/approx_const.rs:24:24
    |
-24 |     let my_frac_2_pi = 0.63661977;
+LL |     let my_frac_2_pi = 0.63661977;
    |                        ^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_2_SQRT_PI` found. Consider using it directly
   --> $DIR/approx_const.rs:27:27
    |
-27 |     let my_frac_2_sq_pi = 1.128379;
+LL |     let my_frac_2_sq_pi = 1.128379;
    |                           ^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_PI_2` found. Consider using it directly
   --> $DIR/approx_const.rs:30:24
    |
-30 |     let my_frac_pi_2 = 1.57079632679;
+LL |     let my_frac_pi_2 = 1.57079632679;
    |                        ^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_PI_3` found. Consider using it directly
   --> $DIR/approx_const.rs:33:24
    |
-33 |     let my_frac_pi_3 = 1.04719755119;
+LL |     let my_frac_pi_3 = 1.04719755119;
    |                        ^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_PI_4` found. Consider using it directly
   --> $DIR/approx_const.rs:36:24
    |
-36 |     let my_frac_pi_4 = 0.785398163397;
+LL |     let my_frac_pi_4 = 0.785398163397;
    |                        ^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_PI_6` found. Consider using it directly
   --> $DIR/approx_const.rs:39:24
    |
-39 |     let my_frac_pi_6 = 0.523598775598;
+LL |     let my_frac_pi_6 = 0.523598775598;
    |                        ^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::FRAC_PI_8` found. Consider using it directly
   --> $DIR/approx_const.rs:42:24
    |
-42 |     let my_frac_pi_8 = 0.3926990816987;
+LL |     let my_frac_pi_8 = 0.3926990816987;
    |                        ^^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::LN_10` found. Consider using it directly
   --> $DIR/approx_const.rs:45:20
    |
-45 |     let my_ln_10 = 2.302585092994046;
+LL |     let my_ln_10 = 2.302585092994046;
    |                    ^^^^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::LN_2` found. Consider using it directly
   --> $DIR/approx_const.rs:48:19
    |
-48 |     let my_ln_2 = 0.6931471805599453;
+LL |     let my_ln_2 = 0.6931471805599453;
    |                   ^^^^^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::LOG10_E` found. Consider using it directly
   --> $DIR/approx_const.rs:51:22
    |
-51 |     let my_log10_e = 0.4342944819032518;
+LL |     let my_log10_e = 0.4342944819032518;
    |                      ^^^^^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::LOG2_E` found. Consider using it directly
   --> $DIR/approx_const.rs:54:21
    |
-54 |     let my_log2_e = 1.4426950408889634;
+LL |     let my_log2_e = 1.4426950408889634;
    |                     ^^^^^^^^^^^^^^^^^^
 
 error: approximate value of `f{32, 64}::consts::PI` found. Consider using it directly
   --> $DIR/approx_const.rs:57:17
    |
-57 |     let my_pi = 3.1415;
+LL |     let my_pi = 3.1415;
    |                 ^^^^^^
 
 error: approximate value of `f{32, 64}::consts::PI` found. Consider using it directly
   --> $DIR/approx_const.rs:58:21
    |
-58 |     let almost_pi = 3.14;
+LL |     let almost_pi = 3.14;
    |                     ^^^^
 
 error: approximate value of `f{32, 64}::consts::SQRT_2` found. Consider using it directly
   --> $DIR/approx_const.rs:61:18
    |
-61 |     let my_sq2 = 1.4142;
+LL |     let my_sq2 = 1.4142;
    |                  ^^^^^^
 
 error: aborting due to 19 previous errors