Rollup merge of #70233 - petrochenkov:superproc, r=ecstatic-morse

resolve: Do not resolve visibilities on proc macro definitions twice

Fixes https://github.com/rust-lang/rust/issues/68921

2 files changed, 39 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/visibility-path.rs b/src/test/ui/proc-macro/visibility-path.rs
new file mode 100644
index 00000000000..a73430db2c1
--- /dev/null
+++ b/src/test/ui/proc-macro/visibility-path.rs
@@ -0,0 +1,25 @@
+// Proc macro defined with `pub(path)` doesn't ICEs due to resolving the `path` (issue #68921).
+
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::*;
+
+#[proc_macro]
+pub(self) fn outer(input: TokenStream) -> TokenStream {
+    //~^ ERROR functions tagged with `#[proc_macro]` must be `pub`
+    input
+}
+
+mod m {
+    use proc_macro::*;
+
+    #[proc_macro]
+    pub(super) fn inner(input: TokenStream) -> TokenStream {
+        //~^ ERROR functions tagged with `#[proc_macro]` must currently reside in the root
+        input
+    }
+}
diff --git a/src/test/ui/proc-macro/visibility-path.stderr b/src/test/ui/proc-macro/visibility-path.stderr
new file mode 100644
index 00000000000..1a73cc1963f
--- /dev/null
+++ b/src/test/ui/proc-macro/visibility-path.stderr
@@ -0,0 +1,14 @@
+error: functions tagged with `#[proc_macro]` must be `pub`
+  --> $DIR/visibility-path.rs:12:1
+   |
+LL | pub(self) fn outer(input: TokenStream) -> TokenStream {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: functions tagged with `#[proc_macro]` must currently reside in the root of the crate
+  --> $DIR/visibility-path.rs:21:5
+   |
+LL |     pub(super) fn inner(input: TokenStream) -> TokenStream {
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors
+