Fix macro_use_import ICE

Author: Jarcho

clippy_lints/src/macro_use.rs

@@ -114,6 +114,7 @@ impl<'tcx> LateLintPass<'tcx> for MacroUseImports {
                 .iter()
                 .find(|attr| attr.ident().map(|s| s.to_string()) == Some("macro_use".to_string()));
             if let Res::Def(DefKind::Mod, id) = path.res;
+            if !id.is_local();
             then {
                 for kid in cx.tcx.item_children(id).iter() {
                     if let Res::Def(DefKind::Macro(_mac_type), mac_id) = kid.res {

tests/ui/macro_use_imports.fixed

@@ -4,7 +4,7 @@
 // run-rustfix
 // ignore-32bit
 
-#![allow(unused_imports, unreachable_code, unused_variables, dead_code)]
+#![allow(unused_imports, unreachable_code, unused_variables, dead_code, unused_attributes)]
 #![allow(clippy::single_component_path_imports)]
 #![warn(clippy::macro_use_imports)]
 
@@ -40,4 +40,8 @@ mod a {
     }
 }
 
+// issue #7015, ICE due to calling `item_children` with local `DefId`
+#[macro_use]
+use a as b;
+
 fn main() {}

tests/ui/macro_use_imports.rs

@@ -4,7 +4,7 @@
 // run-rustfix
 // ignore-32bit
 
-#![allow(unused_imports, unreachable_code, unused_variables, dead_code)]
+#![allow(unused_imports, unreachable_code, unused_variables, dead_code, unused_attributes)]
 #![allow(clippy::single_component_path_imports)]
 #![warn(clippy::macro_use_imports)]
 
@@ -40,4 +40,8 @@ mod a {
     }
 }
 
+// issue #7015, ICE due to calling `item_children` with local `DefId`
+#[macro_use]
+use a as b;
+
 fn main() {}