Rollup merge of rust-lang#61755 - Centril:compiletest-force-check, r=…

…petrochenkov

Add `--pass $mode` to compiletest through `./x.py`

Adds a flag `--pass $mode` to compiletest, which is exposed through `./x.py`.

When `--pass $mode` is passed, `{check,build,compile,run}-pass` tests will be forced to run under the given `$mode` unless the directive `// ignore-pass` exists in the test file.

The modes are explained in rust-lang#61778:
- `check` has the same effect as `cargo check`
- `build` or `compile` have the same effect as `cargo build`
- `run` has the same effect as `cargo run`

On my machine, `./x.py -i test src/test/run-pass --stage 1 --pass check` takes 38 seconds whereas it takes 2 min 7 seconds without `--pass check`.

cc rust-lang#61712

r? @petrochenkov

src/bootstrap/builder/tests.rs

@@ -598,6 +598,7 @@ fn test_with_no_doc_stage0() {
         bless: false,
         compare_mode: None,
         rustfix_coverage: false,
+        pass: None,
     };
 
     let build = Build::new(config);
@@ -640,6 +641,7 @@ fn test_exclude() {
         bless: false,
         compare_mode: None,
         rustfix_coverage: false,
+        pass: None,
     };
 
     let build = Build::new(config);

src/bootstrap/flags.rs

@@ -58,6 +58,7 @@ pub enum Subcommand {
         /// Whether to automatically update stderr/stdout files
         bless: bool,
         compare_mode: Option<String>,
+        pass: Option<String>,
         test_args: Vec<String>,
         rustc_args: Vec<String>,
         fail_fast: bool,
@@ -199,6 +200,12 @@ To learn more about a subcommand, run `./x.py <subcommand> -h`"
                     "mode describing what file the actual ui output will be compared to",
                     "COMPARE MODE",
                 );
+                opts.optopt(
+                    "",
+                    "pass",
+                    "force {check,build,run}-pass tests to this mode.",
+                    "check | build | run"
+                );
                 opts.optflag(
                     "",
                     "rustfix-coverage",
@@ -401,6 +408,7 @@ Arguments:
                 paths,
                 bless: matches.opt_present("bless"),
                 compare_mode: matches.opt_str("compare-mode"),
+                pass: matches.opt_str("pass"),
                 test_args: matches.opt_strs("test-args"),
                 rustc_args: matches.opt_strs("rustc-args"),
                 fail_fast: !matches.opt_present("no-fail-fast"),
@@ -524,6 +532,15 @@ impl Subcommand {
             _ => None,
         }
     }
+
+    pub fn pass(&self) -> Option<&str> {
+        match *self {
+            Subcommand::Test {
+                ref pass, ..
+            } => pass.as_ref().map(|s| &s[..]),
+            _ => None,
+        }
+    }
 }
 
 fn split(s: &[String]) -> Vec<String> {

src/bootstrap/test.rs

@@ -1065,6 +1065,11 @@ impl Step for Compiletest {
             }
         });
 
+        if let Some(ref pass) = builder.config.cmd.pass() {
+            cmd.arg("--pass");
+            cmd.arg(pass);
+        }
+
         if let Some(ref nodejs) = builder.config.nodejs {
             cmd.arg("--nodejs").arg(nodejs);
         }

src/test/ui/consts/const-eval/promoted_errors.rs

@@ -1,19 +1,23 @@
-#![warn(const_err)]
-
-// compile-pass
 // compile-flags: -O
+
+#![deny(const_err)]
+
 fn main() {
     println!("{}", 0u32 - 1);
     let _x = 0u32 - 1;
-    //~^ WARN const_err
+    //~^ ERROR this expression will panic at runtime [const_err]
     println!("{}", 1/(1-1));
-    //~^ WARN const_err
+    //~^ ERROR this expression will panic at runtime [const_err]
+    //~| ERROR attempt to divide by zero [const_err]
+    //~| ERROR reaching this expression at runtime will panic or abort [const_err]
     let _x = 1/(1-1);
-    //~^ WARN const_err
-    //~| WARN const_err
+    //~^ ERROR const_err
+    //~| ERROR const_err
     println!("{}", 1/(false as u32));
-    //~^ WARN const_err
+    //~^ ERROR this expression will panic at runtime [const_err]
+    //~| ERROR attempt to divide by zero [const_err]
+    //~| ERROR reaching this expression at runtime will panic or abort [const_err]
     let _x = 1/(false as u32);
-    //~^ WARN const_err
-    //~| WARN const_err
+    //~^ ERROR const_err
+    //~| ERROR const_err
 }

src/test/ui/consts/const-eval/promoted_errors.stderr

@@ -1,72 +1,74 @@
-warning: this expression will panic at runtime
+error: this expression will panic at runtime
   --> $DIR/promoted_errors.rs:7:14
    |
 LL |     let _x = 0u32 - 1;
    |              ^^^^^^^^ attempt to subtract with overflow
    |
 note: lint level defined here
-  --> $DIR/promoted_errors.rs:1:9
+  --> $DIR/promoted_errors.rs:3:9
    |
-LL | #![warn(const_err)]
+LL | #![deny(const_err)]
    |         ^^^^^^^^^
 
-warning: attempt to divide by zero
+error: attempt to divide by zero
   --> $DIR/promoted_errors.rs:9:20
    |
 LL |     println!("{}", 1/(1-1));
    |                    ^^^^^^^
 
-warning: this expression will panic at runtime
+error: this expression will panic at runtime
   --> $DIR/promoted_errors.rs:9:20
    |
 LL |     println!("{}", 1/(1-1));
    |                    ^^^^^^^ attempt to divide by zero
 
-warning: attempt to divide by zero
-  --> $DIR/promoted_errors.rs:11:14
+error: attempt to divide by zero
+  --> $DIR/promoted_errors.rs:13:14
    |
 LL |     let _x = 1/(1-1);
    |              ^^^^^^^
 
-warning: this expression will panic at runtime
-  --> $DIR/promoted_errors.rs:11:14
+error: this expression will panic at runtime
+  --> $DIR/promoted_errors.rs:13:14
    |
 LL |     let _x = 1/(1-1);
    |              ^^^^^^^ attempt to divide by zero
 
-warning: attempt to divide by zero
-  --> $DIR/promoted_errors.rs:14:20
+error: attempt to divide by zero
+  --> $DIR/promoted_errors.rs:16:20
    |
 LL |     println!("{}", 1/(false as u32));
    |                    ^^^^^^^^^^^^^^^^
 
-warning: this expression will panic at runtime
-  --> $DIR/promoted_errors.rs:14:20
+error: this expression will panic at runtime
+  --> $DIR/promoted_errors.rs:16:20
    |
 LL |     println!("{}", 1/(false as u32));
    |                    ^^^^^^^^^^^^^^^^ attempt to divide by zero
 
-warning: attempt to divide by zero
-  --> $DIR/promoted_errors.rs:16:14
+error: attempt to divide by zero
+  --> $DIR/promoted_errors.rs:20:14
    |
 LL |     let _x = 1/(false as u32);
    |              ^^^^^^^^^^^^^^^^
 
-warning: this expression will panic at runtime
-  --> $DIR/promoted_errors.rs:16:14
+error: this expression will panic at runtime
+  --> $DIR/promoted_errors.rs:20:14
    |
 LL |     let _x = 1/(false as u32);
    |              ^^^^^^^^^^^^^^^^ attempt to divide by zero
 
-warning: reaching this expression at runtime will panic or abort
-  --> $DIR/promoted_errors.rs:14:20
+error: reaching this expression at runtime will panic or abort
+  --> $DIR/promoted_errors.rs:16:20
    |
 LL |     println!("{}", 1/(false as u32));
    |                    ^^^^^^^^^^^^^^^^ attempt to divide by zero
 
-warning: reaching this expression at runtime will panic or abort
+error: reaching this expression at runtime will panic or abort
   --> $DIR/promoted_errors.rs:9:20
    |
 LL |     println!("{}", 1/(1-1));
    |                    ^^^^^^^ attempt to divide by zero
 
+error: aborting due to 11 previous errors
+

src/test/ui/emit-artifact-notifications.rs

@@ -1,5 +1,7 @@
 // compile-flags:--emit=metadata --error-format=json -Z emit-artifact-notifications
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
 
 // A very basic test for the emission of artifact notifications in JSON output.
 

src/test/ui/lint/lint-type-overflow2.rs

@@ -1,15 +1,13 @@
 // compile-flags: -O
-#![warn(overflowing_literals)]
-#![warn(const_err)]
-// compile-pass
 
-#[allow(unused_variables)]
+#![deny(overflowing_literals)]
+#![deny(const_err)]
 
 fn main() {
-    let x2: i8 = --128; //~ warn: literal out of range for i8
+    let x2: i8 = --128; //~ ERROR literal out of range for `i8`
 
-    let x = -3.40282357e+38_f32; //~ warn: literal out of range for f32
-    let x =  3.40282357e+38_f32; //~ warn: literal out of range for f32
-    let x = -1.7976931348623159e+308_f64; //~ warn: literal out of range for f64
-    let x =  1.7976931348623159e+308_f64; //~ warn: literal out of range for f64
+    let x = -3.40282357e+38_f32; //~ ERROR literal out of range for `f32`
+    let x =  3.40282357e+38_f32; //~ ERROR literal out of range for `f32`
+    let x = -1.7976931348623159e+308_f64; //~ ERROR literal out of range for `f64`
+    let x =  1.7976931348623159e+308_f64; //~ ERROR literal out of range for `f64`
 }

src/test/ui/lint/lint-type-overflow2.stderr

@@ -1,48 +1,38 @@
-warning: literal out of range for `i8`
-  --> $DIR/lint-type-overflow2.rs:9:20
+error: literal out of range for `i8`
+  --> $DIR/lint-type-overflow2.rs:7:20
    |
 LL |     let x2: i8 = --128;
    |                    ^^^
    |
 note: lint level defined here
-  --> $DIR/lint-type-overflow2.rs:2:9
+  --> $DIR/lint-type-overflow2.rs:3:9
    |
-LL | #![warn(overflowing_literals)]
+LL | #![deny(overflowing_literals)]
    |         ^^^^^^^^^^^^^^^^^^^^
 
-warning: literal out of range for `f32`
-  --> $DIR/lint-type-overflow2.rs:11:14
+error: literal out of range for `f32`
+  --> $DIR/lint-type-overflow2.rs:9:14
    |
 LL |     let x = -3.40282357e+38_f32;
    |              ^^^^^^^^^^^^^^^^^^
 
-warning: literal out of range for `f32`
-  --> $DIR/lint-type-overflow2.rs:12:14
+error: literal out of range for `f32`
+  --> $DIR/lint-type-overflow2.rs:10:14
    |
 LL |     let x =  3.40282357e+38_f32;
    |              ^^^^^^^^^^^^^^^^^^
 
-warning: literal out of range for `f64`
-  --> $DIR/lint-type-overflow2.rs:13:14
+error: literal out of range for `f64`
+  --> $DIR/lint-type-overflow2.rs:11:14
    |
 LL |     let x = -1.7976931348623159e+308_f64;
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-warning: literal out of range for `f64`
-  --> $DIR/lint-type-overflow2.rs:14:14
+error: literal out of range for `f64`
+  --> $DIR/lint-type-overflow2.rs:12:14
    |
 LL |     let x =  1.7976931348623159e+308_f64;
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-warning: this expression will panic at runtime
-  --> $DIR/lint-type-overflow2.rs:9:18
-   |
-LL |     let x2: i8 = --128;
-   |                  ^^^^^ attempt to negate with overflow
-   |
-note: lint level defined here
-  --> $DIR/lint-type-overflow2.rs:3:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
+error: aborting due to 5 previous errors
 

src/test/ui/print_type_sizes/generics.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 // This file illustrates how generics are handled: types have to be
 // monomorphized, in the MIR of the original function in which they

src/test/ui/print_type_sizes/niche-filling.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 // This file illustrates how niche-filling enums are handled,
 // modelled after cases like `Option<&u32>`, `Option<bool>` and such.

src/test/ui/print_type_sizes/no_duplicates.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 // This file illustrates that when the same type occurs repeatedly
 // (even if multiple functions), it is only printed once in the

src/test/ui/print_type_sizes/packed.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 // This file illustrates how packing is handled; it should cause
 // the elimination of padding that would normally be introduced

src/test/ui/print_type_sizes/repr-align.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 // This file illustrates how padding is handled: alignment
 // requirements can lead to the introduction of padding, either before

src/test/ui/print_type_sizes/uninhabited.rs

@@ -1,5 +1,8 @@
 // compile-flags: -Z print-type-sizes
 // compile-pass
+// ignore-pass
+// ^-- needed because `--pass check` does not emit the output needed.
+//     FIXME: consider using an attribute instead of side-effects.
 
 #![feature(never_type)]
 #![feature(start)]

src/test/ui/proc-macro/auxiliary/generate-mod.rs

@@ -1,6 +1,7 @@
 // run-pass
 // force-host
 // no-prefer-dynamic
+// ignore-pass
 
 #![crate_type = "proc-macro"]
 

src/test/ui/save-analysis/emit-notifications.rs

@@ -1,4 +1,7 @@
 // compile-pass
 // compile-flags: -Zsave-analysis -Zemit-artifact-notifications
 // compile-flags: --crate-type rlib --error-format=json
+// ignore-pass
+// ^-- needed because otherwise, the .stderr file changes with --pass check
+
 pub fn foo() {}