Rollup merge of #110379 - ehuss:unignore-tests, r=compiler-errors

Update some ignored tests.

This unignores some tests which no longer need to be ignored (see individual commits for reasons why). This also adds some descriptions to why tests are ignored so they can be seen in the test output.

Author: fee1-dead

tests/mir-opt/simplify_arm.rs

@@ -6,8 +6,7 @@
 // EMIT_MIR simplify_arm.id_try.SimplifyArmIdentity.diff
 // EMIT_MIR simplify_arm.id_try.SimplifyBranchSame.diff
 
-// This pass is broken since deaggregation changed
-// ignore-test
+// ignore-test This pass is broken since deaggregation changed
 
 fn id(o: Option<u8>) -> Option<u8> {
     match o {

tests/mir-opt/simplify_arm_identity.rs

@@ -4,8 +4,7 @@
 // compile-flags: -Zmir-opt-level=3
 // EMIT_MIR_FOR_EACH_BIT_WIDTH
 
-// This pass is broken since deaggregation changed
-// ignore-test
+// ignore-test This pass is broken since deaggregation changed
 
 enum Src {
     Foo(u8),

tests/ui/borrowck/move-error-snippets-ext.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 macro_rules! aaa {
     ($c:ident) => {{

tests/ui/codemap_tests/two_files_data.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 trait Foo { }
 

tests/ui/conditional-compilation/module_with_cfg.rs

@@ -1,3 +1,3 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 #![cfg_attr(all(), cfg(FALSE))]

tests/ui/cross/cross-file-errors/main.stderr

@@ -1,5 +1,5 @@
 error: in expressions, `_` can only be used on the left-hand side of an assignment
-  --> $DIR/underscore.rs:8:9
+  --> $DIR/underscore.rs:6:9
    |
 LL |         _
    |         ^ `_` not allowed here

tests/ui/cross/cross-file-errors/underscore.rs

@@ -1,6 +1,4 @@
-// We want this file only so we can test cross-file error
-// messages, but we don't want it in an external crate.
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 #![crate_type = "lib"]
 
 macro_rules! underscore {

tests/ui/inline-const/const-match-pat-lifetime-err.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (This is currently broken)
 
 #![allow(incomplete_features)]
 #![feature(const_mut_refs)]

tests/ui/issues/issue-49298.rs

@@ -6,7 +6,7 @@
 // where #54986 is implemented and #54987 is *not* implemented. For
 // now: just ignore it
 //
-// ignore-test
+// ignore-test (#54987)
 
 // This test is checking that the space allocated for `x.1` does not
 // overlap with `y`. (The reason why such a thing happened at one

tests/ui/issues/issue-59756.rs

@@ -1,5 +1,5 @@
 // run-rustfix
-// ignore-test
+// ignore-test (rustfix needs multiple suggestions)
 //
 // FIXME: Re-enable this test once we support choosing
 // between multiple mutually exclusive suggestions for the same span

tests/ui/lint/dead-code/closure-bang.rs

@@ -1,9 +1,7 @@
-// ignore-test FIXME(#20574)
-
 #![deny(unreachable_code)]
 
 fn main() {
-    let x = || panic!();
+    let x = || -> ! { panic!() };
     x();
     println!("Foo bar"); //~ ERROR: unreachable statement
 }

tests/ui/lint/dead-code/closure-bang.stderr

@@ -0,0 +1,17 @@
+error: unreachable statement
+  --> $DIR/closure-bang.rs:6:5
+   |
+LL |     x();
+   |     --- any code following this expression is unreachable
+LL |     println!("Foo bar");
+   |     ^^^^^^^^^^^^^^^^^^^ unreachable statement
+   |
+note: the lint level is defined here
+  --> $DIR/closure-bang.rs:1:9
+   |
+LL | #![deny(unreachable_code)]
+   |         ^^^^^^^^^^^^^^^^
+   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+

tests/ui/macros/macro-expanded-include/foo/mod.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 macro_rules! m {
     () => { include!("file.txt"); }

tests/ui/match/issue-26996.rs

@@ -4,7 +4,7 @@
 // where #54986 is implemented and #54987 is *not* implemented. For
 // now: just ignore it
 //
-// ignore-test
+// ignore-test (#54987)
 
 // This test is checking that the write to `c.0` (which has been moved out of)
 // won't overwrite the state in `c2`.

tests/ui/match/issue-27021.rs

@@ -4,7 +4,7 @@
 // where #54986 is implemented and #54987 is *not* implemented. For
 // now: just ignore it
 //
-// ignore-test
+// ignore-test (#54987)
 
 // These are variants of issue-26996.rs. In all cases we are writing
 // into a record field that has been moved out of, and ensuring that

tests/ui/numbers-arithmetic/saturating-float-casts-impl.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 // Tests saturating float->int casts. See u128-as-f32.rs for the opposite direction.
 //

tests/ui/panics/panic-short-backtrace-windows-x86_64.rs

@@ -1,6 +1,6 @@
 // This test has been spuriously failing a lot recently (#92000).
 // Ignore it until the underlying issue is fixed.
-// ignore-test
+// ignore-test (#92000)
 
 // Regression test for #87481: short backtrace formatting cut off the entire stack trace.
 

tests/ui/proc-macro/module.rs

@@ -1 +1 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)

tests/ui/proc-macro/module_with_attrs.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 #![rustfmt::skip]
 #![print_attr]

tests/ui/proc-macro/outer/inner.rs

@@ -1 +1 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)

tests/ui/proc-macro/pretty-print-hack/allsorts-rental-0.5.6/src/lib.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 #[derive(Print)]
 enum ProceduralMasqueradeDummyType {

tests/ui/proc-macro/pretty-print-hack/rental-0.5.5/src/lib.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 #[derive(Print)]
 enum ProceduralMasqueradeDummyType {

tests/ui/proc-macro/pretty-print-hack/rental-0.5.6/src/lib.rs

@@ -1,4 +1,4 @@
-// ignore-test
+// ignore-test (auxiliary, used by other tests)
 
 #[derive(Print)]
 enum ProceduralMasqueradeDummyType {

tests/ui/type-alias-impl-trait/issue-65918.rs

@@ -1,5 +1,3 @@
-// ignore-test: This now ICEs again.
-
 // build-pass
 
 #![feature(type_alias_impl_trait)]