Silence unused_imports if import comes from glob

Author: compiler-errors

compiler/rustc_resolve/src/imports.rs

@@ -1375,8 +1375,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> {
                     target_bindings[ns].get(),
                 ) {
                     Ok(other_binding) => {
-                        is_redundant =
-                            binding.res() == other_binding.res() && !other_binding.is_ambiguity();
+                        is_redundant = binding.res() == other_binding.res()
+                            && !other_binding.is_ambiguity()
+                            && !other_binding.is_glob_import();
                         if is_redundant {
                             redundant_span[ns] =
                                 Some((other_binding.span, other_binding.is_import()));

tests/ui/lint/use-redundant/use-redundant-glob-parent.rs

@@ -9,7 +9,7 @@ pub mod bar {
 use bar::*;
 
 pub fn warning() -> Foo {
-    use bar::Foo; //~ WARNING imported redundantly
+    use bar::Foo; //FIXME(unused_imports): ~ WARNING imported redundantly
     Foo(Bar('a'))
 }
 

tests/ui/lint/use-redundant/use-redundant-glob-parent.stderr

@@ -8,7 +8,7 @@ pub mod bar {
 
 pub fn warning() -> bar::Foo {
     use bar::*;
-    use bar::Foo; //~ WARNING imported redundantly
+    use bar::Foo; //FIXME(unused_imports): ~ WARNING imported redundantly
     Foo(Bar('a'))
 }