diff --git a/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_function.rs b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_function.rs
new file mode 100644
index 00000000000..709119caa0e
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_function.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+fn outer_function() {
+    #[proc_macro_attribute]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_attribute.. must currently reside in the root of the crate" }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_method.rs b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_method.rs
new file mode 100644
index 00000000000..30f3196a976
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_method.rs
@@ -0,0 +1,10 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+struct DummyStruct;
+
+impl DummyStruct {
+    pub fn method(self) {
+        #[proc_macro_attribute]
+        pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_attribute.. must currently reside in the root of the crate" }
+    }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_module.rs b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_module.rs
new file mode 100644
index 00000000000..60165bed851
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_attribute_non_root_module.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+mod test_module {
+    #[proc_macro_attribute]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_attribute.. must currently reside in the root of the crate" }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_derive_non_root_function.rs b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_function.rs
new file mode 100644
index 00000000000..69d5ca1fe09
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_function.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+fn outer_function() {
+    #[proc_macro_derive(SomeTrait)]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_derive.. must currently reside in the root of the crate" }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_derive_non_root_method.rs b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_method.rs
new file mode 100644
index 00000000000..523b37af11e
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_method.rs
@@ -0,0 +1,12 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+trait SomeTrait {}
+
+struct DummyStruct;
+
+impl DummyStruct {
+    pub fn method(self) {
+        #[proc_macro_derive(SomeTrait)]
+        pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_derive.. must currently reside in the root of the crate" }
+    }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_derive_non_root_module.rs b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_module.rs
new file mode 100644
index 00000000000..45d7a47f839
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_derive_non_root_module.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+mod test_module {
+    #[proc_macro_derive(SomeTrait)]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro_derive.. must currently reside in the root of the crate" }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_non_root_function.rs b/gcc/testsuite/rust/compile/proc_macro_non_root_function.rs
new file mode 100644
index 00000000000..930994024be
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_non_root_function.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+fn outer_function() {
+    #[proc_macro]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro.. must currently reside in the root of the crate" }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_non_root_method.rs b/gcc/testsuite/rust/compile/proc_macro_non_root_method.rs
new file mode 100644
index 00000000000..ee52c324bab
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_non_root_method.rs
@@ -0,0 +1,10 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+struct DummyStruct;
+
+impl DummyStruct {
+    pub fn method(self) {
+        #[proc_macro]
+        pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro.. must currently reside in the root of the crate" }
+    }
+}
diff --git a/gcc/testsuite/rust/compile/proc_macro_non_root_module.rs b/gcc/testsuite/rust/compile/proc_macro_non_root_module.rs
new file mode 100644
index 00000000000..1028612a35e
--- /dev/null
+++ b/gcc/testsuite/rust/compile/proc_macro_non_root_module.rs
@@ -0,0 +1,6 @@
+// { dg-additional-options "-frust-crate-type=proc-macro" }
+
+mod test_module {
+    #[proc_macro]
+    pub fn non_root_function() {} // { dg-error "functions tagged with .#.proc_macro.. must currently reside in the root of the crate" }
+}