Auto merge of #65759 - tmiasko:ui, r=petrochenkov

Validate error patterns and error annotation in ui tests when present

Previously, when compilation succeeded, neither error patterns nor error
annotation would be validated. Additionally, when compilation failed,
only error patterns would be validated if both error patterns and error
annotation were present.

Now both error patterns and error annotation are validated when present,
regardless of compilation status. Furthermore, for test that should run,
the error patterns are matched against executable output, which is what
some of tests already expect to happen, and when #65506 is merged even
more ui tests will.

Fixes #56277

Author: bors

src/test/ui-fulldeps/lint-group-plugin.rs

@@ -3,7 +3,7 @@
 // ignore-stage1
 
 #![feature(plugin)]
-#![plugin(lint_group_plugin_test)]
+#![plugin(lint_group_plugin_test)] //~ WARNING use of deprecated attribute
 #![allow(dead_code)]
 
 fn lintme() { } //~ WARNING item is named 'lintme'

src/test/ui-fulldeps/lint-plugin.rs

@@ -2,7 +2,7 @@
 // aux-build:lint-plugin-test.rs
 // ignore-stage1
 #![feature(plugin)]
-#![plugin(lint_plugin_test)]
+#![plugin(lint_plugin_test)] //~ WARNING use of deprecated attribute
 #![allow(dead_code)]
 
 fn lintme() { } //~ WARNING item is named 'lintme'

src/test/ui/conditional-compilation/cfg-attr-multi-true.rs

@@ -17,5 +17,5 @@ impl MustUseDeprecated { //~ warning: use of deprecated item
 
 fn main() {
     MustUseDeprecated::new(); //~ warning: use of deprecated item
-    //| warning: unused `MustUseDeprecated` that must be used
+    //~| warning: unused `MustUseDeprecated` that must be used
 }

src/test/ui/const-generics/cannot-infer-type-for-const-param.rs

@@ -8,6 +8,5 @@
 struct Foo<const NUM_BYTES: usize>(pub [u8; NUM_BYTES]);
 
 fn main() {
-    let _ = Foo::<3>([1, 2, 3]); //~ ERROR type annotations needed
-    //~^ ERROR mismatched types
+    let _ = Foo::<3>([1, 2, 3]);
 }

src/test/ui/const-generics/issues/issue-62187-encountered-polymorphic-const.rs

@@ -12,5 +12,5 @@ impl<const L: usize> BitLen for [u8; L] {
 }
 
 fn main() {
-    let foo = <[u8; 2]>::BIT_LEN;
+    let foo = <[u8; 2]>::BIT_LEN; //~ WARN unused variable
 }

src/test/ui/continue-after-missing-main.nll.stderr

@@ -3,8 +3,8 @@ error[E0601]: `main` function not found in crate `continue_after_missing_main`
    |
 LL | / #![allow(dead_code)]
 LL | |
-LL | | // error-pattern:`main` function not found in crate
-LL | |
+LL | | struct Tableau<'a, MP> {
+LL | |     provider: &'a MP,
 ...  |
 LL | |
 LL | | }

src/test/ui/continue-after-missing-main.rs

@@ -1,6 +1,4 @@
-#![allow(dead_code)]
-
-// error-pattern:`main` function not found in crate
+#![allow(dead_code)] //~ ERROR `main` function not found in crate
 
 struct Tableau<'a, MP> {
     provider: &'a MP,

src/test/ui/continue-after-missing-main.stderr

@@ -3,15 +3,15 @@ error[E0601]: `main` function not found in crate `continue_after_missing_main`
    |
 LL | / #![allow(dead_code)]
 LL | |
-LL | | // error-pattern:`main` function not found in crate
-LL | |
+LL | | struct Tableau<'a, MP> {
+LL | |     provider: &'a MP,
 ...  |
 LL | |
 LL | | }
    | |_^ consider adding a `main` function to `$DIR/continue-after-missing-main.rs`
 
 error[E0623]: lifetime mismatch
-  --> $DIR/continue-after-missing-main.rs:30:56
+  --> $DIR/continue-after-missing-main.rs:28:56
    |
 LL |     tableau: Tableau<'data_provider, AdaptedMatrixProvider<'original_data, MP>>,
    |              ------------------------------------------------------------------ these two types are declared with different lifetimes...

src/test/ui/derive-uninhabited-enum-38885.rs

@@ -10,7 +10,7 @@ enum Void {}
 #[derive(Debug)]
 enum Foo {
     Bar(u8),
-    Void(Void), //~ WARN never used
+    Void(Void), //~ WARN never constructed
 }
 
 fn main() {

src/test/ui/feature-gate/issue-43106-gating-of-builtin-attrs.rs

@@ -38,6 +38,7 @@
 // Exception, a gated and deprecated attribute.
 
 #![plugin_registrar] //~ WARN unused attribute
+//~| WARN use of deprecated attribute
 
 // UNGATED WHITE-LISTED BUILT-IN ATTRIBUTES
 
@@ -90,7 +91,7 @@
 #![crate_id = "10"] //~ WARN use of deprecated attribute
 
 // FIXME(#44232) we should warn that this isn't used.
-#![feature(rust1)]
+#![feature(rust1)] //~ WARN no longer requires an attribute to enable
 
 #![no_start] //~ WARN use of deprecated attribute
 
@@ -215,20 +216,25 @@ mod macro_export {
 
 #[plugin_registrar]
 //~^ WARN unused attribute
+//~| WARN use of deprecated attribute
 mod plugin_registrar {
     mod inner { #![plugin_registrar] }
     //~^ WARN unused attribute
+    //~| WARN use of deprecated attribute
 
     // for `fn f()` case, see gated-plugin_registrar.rs
 
     #[plugin_registrar] struct S;
     //~^ WARN unused attribute
+    //~| WARN use of deprecated attribute
 
     #[plugin_registrar] type T = S;
     //~^ WARN unused attribute
+    //~| WARN use of deprecated attribute
 
     #[plugin_registrar] impl S { }
     //~^ WARN unused attribute
+    //~| WARN use of deprecated attribute
 }
 
 #[main]