Auto merge of #108934 - matthiaskrgr:rollup-vm414p5, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #106915 (Only load one CSS theme by default)
 - #108294 (Place binder correctly for arbitrary trait bound suggestion)
 - #108778 (x fmt: Don't print all modified files if there's more than 10)
 - #108854 (feat/refactor: improve errors in case of ident with number at start)
 - #108870 (Fix invalid inlining of reexport of reexport of private item)
 - #108917 (Consider target_family as pal)
 - #108922 (Add auto notification for changes to stable mir)
 - #108929 (Fix typo in span_map.rs)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

6 files changed, 65 insertions, 9 deletions

diff --git a/tests/ui/parser/integer-literal-start-ident.rs b/tests/ui/parser/integer-literal-start-ident.rs
new file mode 100644
index 00000000000..12537482e0f
--- /dev/null
+++ b/tests/ui/parser/integer-literal-start-ident.rs
@@ -0,0 +1,2 @@
+fn 1main() {}
+//~^ ERROR expected identifier, found `1main`
diff --git a/tests/ui/parser/integer-literal-start-ident.stderr b/tests/ui/parser/integer-literal-start-ident.stderr
new file mode 100644
index 00000000000..51c37a0d24c
--- /dev/null
+++ b/tests/ui/parser/integer-literal-start-ident.stderr
@@ -0,0 +1,10 @@
+error: expected identifier, found `1main`
+  --> $DIR/integer-literal-start-ident.rs:1:4
+   |
+LL | fn 1main() {}
+   |    ^^^^^ expected identifier
+   |
+   = help: identifiers cannot start with a number
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-104088.rs b/tests/ui/parser/issues/issue-104088.rs
index 5f794fe2dc9..86988c8cd21 100644
--- a/tests/ui/parser/issues/issue-104088.rs
+++ b/tests/ui/parser/issues/issue-104088.rs
@@ -4,12 +4,12 @@ fn test() {
 
 fn test_2() {
     let 1x = 123;
-    //~^ ERROR expected identifier, found number literal
+    //~^ ERROR expected identifier, found `1x`
 }
 
 fn test_3() {
     let 2x: i32 = 123;
-    //~^ ERROR expected identifier, found number literal
+    //~^ ERROR expected identifier, found `2x`
 }
 
 fn test_4() {
@@ -20,7 +20,7 @@ fn test_4() {
 
 fn test_5() {
     let 23name = 123;
-    //~^ ERROR expected identifier, found number literal
+    //~^ ERROR expected identifier, found `23name`
 }
 
 fn main() {}
diff --git a/tests/ui/parser/issues/issue-104088.stderr b/tests/ui/parser/issues/issue-104088.stderr
index ff4b4bdb695..6511a313149 100644
--- a/tests/ui/parser/issues/issue-104088.stderr
+++ b/tests/ui/parser/issues/issue-104088.stderr
@@ -1,20 +1,26 @@
-error: expected identifier, found number literal
+error: expected identifier, found `1x`
   --> $DIR/issue-104088.rs:6:9
    |
 LL |     let 1x = 123;
-   |         ^^ identifiers cannot start with a number
+   |         ^^ expected identifier
+   |
+   = help: identifiers cannot start with a number
 
-error: expected identifier, found number literal
+error: expected identifier, found `2x`
   --> $DIR/issue-104088.rs:11:9
    |
 LL |     let 2x: i32 = 123;
-   |         ^^ identifiers cannot start with a number
+   |         ^^ expected identifier
+   |
+   = help: identifiers cannot start with a number
 
-error: expected identifier, found number literal
+error: expected identifier, found `23name`
   --> $DIR/issue-104088.rs:22:9
    |
 LL |     let 23name = 123;
-   |         ^^^^^^ identifiers cannot start with a number
+   |         ^^^^^^ expected identifier
+   |
+   = help: identifiers cannot start with a number
 
 error[E0308]: mismatched types
   --> $DIR/issue-104088.rs:16:12
diff --git a/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.rs b/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.rs
new file mode 100644
index 00000000000..e56c8622ece
--- /dev/null
+++ b/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.rs
@@ -0,0 +1,16 @@
+trait Foo
+where
+    for<'a> &'a Self: Bar,
+{
+}
+
+impl Foo for () {}
+
+trait Bar {}
+
+impl Bar for &() {}
+
+fn foo<T: Foo>() {}
+//~^ ERROR the trait bound `for<'a> &'a T: Bar` is not satisfied
+
+fn main() {}
diff --git a/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.stderr b/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.stderr
new file mode 100644
index 00000000000..2298e7f4e0c
--- /dev/null
+++ b/tests/ui/suggestions/correct-binder-for-arbitrary-bound-sugg.stderr
@@ -0,0 +1,22 @@
+error[E0277]: the trait bound `for<'a> &'a T: Bar` is not satisfied
+  --> $DIR/correct-binder-for-arbitrary-bound-sugg.rs:13:11
+   |
+LL | fn foo<T: Foo>() {}
+   |           ^^^ the trait `for<'a> Bar` is not implemented for `&'a T`
+   |
+note: required by a bound in `Foo`
+  --> $DIR/correct-binder-for-arbitrary-bound-sugg.rs:3:23
+   |
+LL | trait Foo
+   |       --- required by a bound in this trait
+LL | where
+LL |     for<'a> &'a Self: Bar,
+   |                       ^^^ required by this bound in `Foo`
+help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
+   |
+LL | fn foo<T: Foo>() where for<'a> &'a T: Bar {}
+   |                  ++++++++++++++++++++++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.