Add regression test for inconsistent import resolution from issue 147208

tests/ui/resolve/ice-inconsistent-resolution-with-import-separators-issue-147208.rs

@@ -0,0 +1,18 @@
+//@ edition: 2024
+
+// Regression test for issue https://github.com/rust-lang/rust/issues/147208
+// Fix by https://github.com/rust-lang/rust/pull/149681
+
+use foo::bar::E::*;
+  //~^ ERROR cannot find module or crate `foo` in this scope
+use foo::bar::test_use::io as std_io;
+  //~^ ERROR cannot find module or crate `foo` in this scope
+  //~| ERROR unresolved import `foo::bar::test_use::io`
+fn main() {
+    Foo(());
+    //~^ ERROR cannot find function, tuple struct or tuple variant `Foo` in this scope
+    {
+        use ::std::io as std_io;
+        use std_io::stdout;
+    }
+}

tests/ui/resolve/ice-inconsistent-resolution-with-import-separators-issue-147208.stderr

@@ -0,0 +1,32 @@
+error[E0433]: cannot find module or crate `foo` in this scope
+  --> $DIR/ice-inconsistent-resolution-with-import-separators-issue-147208.rs:6:5
+   |
+LL | use foo::bar::E::*;
+   |     ^^^ use of unresolved module or unlinked crate `foo`
+   |
+   = help: you might be missing a crate named `foo`
+
+error[E0433]: cannot find module or crate `foo` in this scope
+  --> $DIR/ice-inconsistent-resolution-with-import-separators-issue-147208.rs:8:5
+   |
+LL | use foo::bar::test_use::io as std_io;
+   |     ^^^ use of unresolved module or unlinked crate `foo`
+   |
+   = help: you might be missing a crate named `foo`
+
+error[E0432]: unresolved import `foo::bar::test_use::io`
+  --> $DIR/ice-inconsistent-resolution-with-import-separators-issue-147208.rs:8:5
+   |
+LL | use foo::bar::test_use::io as std_io;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0425]: cannot find function, tuple struct or tuple variant `Foo` in this scope
+  --> $DIR/ice-inconsistent-resolution-with-import-separators-issue-147208.rs:12:5
+   |
+LL |     Foo(());
+   |     ^^^ not found in this scope
+
+error: aborting due to 4 previous errors
+
+Some errors have detailed explanations: E0425, E0432, E0433.
+For more information about an error, try `rustc --explain E0425`.

tests/ui/resolve/ice-inconsistent-resolution-with-mod-issue-147208.rs

@@ -0,0 +1,13 @@
+//@ edition: 2024
+
+// Regression test for issue https://github.com/rust-lang/rust/issues/147208
+// Fix by https://github.com/rust-lang/rust/pull/149681
+
+use bar::foo;
+    //~^ ERROR unresolved import `bar`
+use foo::bar;
+fn main() {
+    mod bar;
+    //~^ ERROR cannot declare a file module inside a block unless it has a path attribute
+    use bar::foo;
+}

tests/ui/resolve/ice-inconsistent-resolution-with-mod-issue-147208.stderr

@@ -0,0 +1,19 @@
+error: cannot declare a file module inside a block unless it has a path attribute
+  --> $DIR/ice-inconsistent-resolution-with-mod-issue-147208.rs:10:5
+   |
+LL |     mod bar;
+   |     ^^^^^^^^
+   |
+   = note: file modules are usually placed outside of blocks, at the top level of the file
+
+error[E0432]: unresolved import `bar`
+  --> $DIR/ice-inconsistent-resolution-with-mod-issue-147208.rs:6:5
+   |
+LL | use bar::foo;
+   |     ^^^ use of unresolved module or unlinked crate `bar`
+   |
+   = help: you might be missing a crate named `bar`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0432`.