Regression test for attributes on macro calls

Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>

7 files changed, 302 insertions, 42 deletions

diff --git a/tests/ui/attributes/attr-on-mac-call.rs b/tests/ui/attributes/attr-on-mac-call.rs
new file mode 100644
index 00000000000..a23ced123ef
--- /dev/null
+++ b/tests/ui/attributes/attr-on-mac-call.rs
@@ -0,0 +1,73 @@
+//@ check-pass
+// Regression test for https://github.com/rust-lang/rust/issues/145779
+#![warn(unused_attributes)]
+
+fn main() {
+    #[export_name = "x"]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[unsafe(naked)]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[track_caller]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[used]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[target_feature(enable = "x")]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[deprecated]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[inline]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[link_name = "x"]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[link_section = "x"]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[link_ordinal(42)]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[non_exhaustive]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[proc_macro]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[cold]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[no_mangle]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[deprecated]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[automatically_derived]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[macro_use]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[must_use]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[no_implicit_prelude]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[path = ""]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[ignore]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    #[should_panic]
+    //~^ WARN attribute cannot be used on macro calls
+    //~| WARN previously accepted
+    unreachable!();
+}
diff --git a/tests/ui/attributes/attr-on-mac-call.stderr b/tests/ui/attributes/attr-on-mac-call.stderr
new file mode 100644
index 00000000000..a08d3059168
--- /dev/null
+++ b/tests/ui/attributes/attr-on-mac-call.stderr
@@ -0,0 +1,205 @@
+warning: `#[export_name]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:6:5
+   |
+LL |     #[export_name = "x"]
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[export_name]` can be applied to functions and statics
+note: the lint level is defined here
+  --> $DIR/attr-on-mac-call.rs:3:9
+   |
+LL | #![warn(unused_attributes)]
+   |         ^^^^^^^^^^^^^^^^^
+
+warning: `#[naked]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:9:5
+   |
+LL |     #[unsafe(naked)]
+   |     ^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[naked]` can only be applied to functions
+
+warning: `#[track_caller]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:12:5
+   |
+LL |     #[track_caller]
+   |     ^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[track_caller]` can only be applied to functions
+
+warning: `#[used]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:15:5
+   |
+LL |     #[used]
+   |     ^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[used]` can only be applied to statics
+
+warning: `#[target_feature]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:18:5
+   |
+LL |     #[target_feature(enable = "x")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[target_feature]` can only be applied to functions
+
+warning: `#[deprecated]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:21:5
+   |
+LL |     #[deprecated]
+   |     ^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[deprecated]` can be applied to functions, data types, modules, unions, constants, statics, macro defs, type aliases, use statements, foreign statics, struct fields, traits, associated types, associated consts, enum variants, inherent impl blocks, and crates
+
+warning: `#[inline]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:24:5
+   |
+LL |     #[inline]
+   |     ^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[inline]` can only be applied to functions
+
+warning: `#[link_name]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:27:5
+   |
+LL |     #[link_name = "x"]
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[link_name]` can be applied to foreign functions and foreign statics
+
+warning: `#[link_section]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:30:5
+   |
+LL |     #[link_section = "x"]
+   |     ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[link_section]` can be applied to statics and functions
+
+warning: `#[link_ordinal]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:33:5
+   |
+LL |     #[link_ordinal(42)]
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[link_ordinal]` can be applied to foreign functions and foreign statics
+
+warning: `#[non_exhaustive]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:36:5
+   |
+LL |     #[non_exhaustive]
+   |     ^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[non_exhaustive]` can be applied to data types and enum variants
+
+warning: `#[proc_macro]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:39:5
+   |
+LL |     #[proc_macro]
+   |     ^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[proc_macro]` can only be applied to functions
+
+warning: `#[cold]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:42:5
+   |
+LL |     #[cold]
+   |     ^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[cold]` can only be applied to functions
+
+warning: `#[no_mangle]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:45:5
+   |
+LL |     #[no_mangle]
+   |     ^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[no_mangle]` can be applied to functions and statics
+
+warning: `#[deprecated]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:48:5
+   |
+LL |     #[deprecated]
+   |     ^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[deprecated]` can be applied to functions, data types, modules, unions, constants, statics, macro defs, type aliases, use statements, foreign statics, struct fields, traits, associated types, associated consts, enum variants, inherent impl blocks, and crates
+
+warning: `#[automatically_derived]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:51:5
+   |
+LL |     #[automatically_derived]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[automatically_derived]` can only be applied to trait impl blocks
+
+warning: `#[macro_use]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:54:5
+   |
+LL |     #[macro_use]
+   |     ^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[macro_use]` can be applied to modules, extern crates, and crates
+
+warning: `#[must_use]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:57:5
+   |
+LL |     #[must_use]
+   |     ^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[must_use]` can be applied to functions, data types, unions, and traits
+
+warning: `#[no_implicit_prelude]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:60:5
+   |
+LL |     #[no_implicit_prelude]
+   |     ^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[no_implicit_prelude]` can be applied to modules and crates
+
+warning: `#[path]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:63:5
+   |
+LL |     #[path = ""]
+   |     ^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[path]` can only be applied to modules
+
+warning: `#[ignore]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:66:5
+   |
+LL |     #[ignore]
+   |     ^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[ignore]` can only be applied to functions
+
+warning: `#[should_panic]` attribute cannot be used on macro calls
+  --> $DIR/attr-on-mac-call.rs:69:5
+   |
+LL |     #[should_panic]
+   |     ^^^^^^^^^^^^^^^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[should_panic]` can only be applied to functions
+
+warning: 22 warnings emitted
+
diff --git a/tests/ui/lint/inert-attr-macro.rs b/tests/ui/lint/inert-attr-macro.rs
index d345cbc0f07..c2ccba7f9ba 100644
--- a/tests/ui/lint/inert-attr-macro.rs
+++ b/tests/ui/lint/inert-attr-macro.rs
@@ -1,6 +1,5 @@
 //@ check-pass
 
-#![feature(rustc_attrs)]
 #![warn(unused)]
 
 macro_rules! foo {
@@ -8,16 +7,18 @@ macro_rules! foo {
 }
 
 fn main() {
-    #[rustc_dummy] foo!(); //~ WARN unused attribute `rustc_dummy`
+    #[inline] foo!(); //~ WARN `#[inline]` attribute cannot be used on macro calls
+    //~^ WARN previously accepted
 
     // This does nothing, since `#[allow(warnings)]` is itself
     // an inert attribute on a macro call
-    #[allow(warnings)] #[rustc_dummy] foo!(); //~ WARN unused attribute `allow`
-    //~^ WARN unused attribute `rustc_dummy`
+    #[allow(warnings)] #[inline] foo!(); //~ WARN unused attribute `allow`
+    //~^ WARN `#[inline]` attribute cannot be used on macro calls
+    //~| WARN previously accepted
 
     // This does work, since the attribute is on a parent
     // of the macro invocation.
-    #[allow(warnings)] { #[rustc_dummy] foo!(); }
+    #[allow(warnings)] { #[inline] foo!(); }
 
     // Ok, `cfg` and `cfg_attr` are expanded eagerly and do not warn.
     #[cfg(true)] foo!();
diff --git a/tests/ui/lint/inert-attr-macro.stderr b/tests/ui/lint/inert-attr-macro.stderr
index fc02ee34ae6..9ab6e3ddc74 100644
--- a/tests/ui/lint/inert-attr-macro.stderr
+++ b/tests/ui/lint/inert-attr-macro.stderr
@@ -1,16 +1,13 @@
-warning: unused attribute `rustc_dummy`
-  --> $DIR/inert-attr-macro.rs:11:5
+warning: `#[inline]` attribute cannot be used on macro calls
+  --> $DIR/inert-attr-macro.rs:10:5
    |
-LL |     #[rustc_dummy] foo!();
-   |     ^^^^^^^^^^^^^^
+LL |     #[inline] foo!();
+   |     ^^^^^^^^^
    |
-note: the built-in attribute `rustc_dummy` will be ignored, since it's applied to the macro invocation `foo`
-  --> $DIR/inert-attr-macro.rs:11:20
-   |
-LL |     #[rustc_dummy] foo!();
-   |                    ^^^
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[inline]` can only be applied to functions
 note: the lint level is defined here
-  --> $DIR/inert-attr-macro.rs:4:9
+  --> $DIR/inert-attr-macro.rs:3:9
    |
 LL | #![warn(unused)]
    |         ^^^^^^
@@ -19,26 +16,23 @@ LL | #![warn(unused)]
 warning: unused attribute `allow`
   --> $DIR/inert-attr-macro.rs:15:5
    |
-LL |     #[allow(warnings)] #[rustc_dummy] foo!();
+LL |     #[allow(warnings)] #[inline] foo!();
    |     ^^^^^^^^^^^^^^^^^^
    |
 note: the built-in attribute `allow` will be ignored, since it's applied to the macro invocation `foo`
-  --> $DIR/inert-attr-macro.rs:15:39
+  --> $DIR/inert-attr-macro.rs:15:34
    |
-LL |     #[allow(warnings)] #[rustc_dummy] foo!();
-   |                                       ^^^
+LL |     #[allow(warnings)] #[inline] foo!();
+   |                                  ^^^
 
-warning: unused attribute `rustc_dummy`
+warning: `#[inline]` attribute cannot be used on macro calls
   --> $DIR/inert-attr-macro.rs:15:24
    |
-LL |     #[allow(warnings)] #[rustc_dummy] foo!();
-   |                        ^^^^^^^^^^^^^^
-   |
-note: the built-in attribute `rustc_dummy` will be ignored, since it's applied to the macro invocation `foo`
-  --> $DIR/inert-attr-macro.rs:15:39
+LL |     #[allow(warnings)] #[inline] foo!();
+   |                        ^^^^^^^^^
    |
-LL |     #[allow(warnings)] #[rustc_dummy] foo!();
-   |                                       ^^^
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = help: `#[inline]` can only be applied to functions
 
 warning: 3 warnings emitted
 
diff --git a/tests/ui/lint/unused/unused_attributes-must_use.fixed b/tests/ui/lint/unused/unused_attributes-must_use.fixed
index 6bc63c8ee5b..fa596da95cc 100644
--- a/tests/ui/lint/unused/unused_attributes-must_use.fixed
+++ b/tests/ui/lint/unused/unused_attributes-must_use.fixed
@@ -65,7 +65,6 @@ extern "Rust" {
     fn foreign_foo() -> i64;
 }
 
- //~ ERROR unused attribute
 //~^ ERROR `#[must_use]` attribute cannot be used on macro calls
 //~| WARN this was previously accepted by the compiler but is being phased out
 global_asm!("");
diff --git a/tests/ui/lint/unused/unused_attributes-must_use.rs b/tests/ui/lint/unused/unused_attributes-must_use.rs
index 3c0d76e619f..3e72dd1e438 100644
--- a/tests/ui/lint/unused/unused_attributes-must_use.rs
+++ b/tests/ui/lint/unused/unused_attributes-must_use.rs
@@ -65,7 +65,7 @@ extern "Rust" {
     fn foreign_foo() -> i64;
 }
 
-#[must_use] //~ ERROR unused attribute
+#[must_use]
 //~^ ERROR `#[must_use]` attribute cannot be used on macro calls
 //~| WARN this was previously accepted by the compiler but is being phased out
 global_asm!("");
diff --git a/tests/ui/lint/unused/unused_attributes-must_use.stderr b/tests/ui/lint/unused/unused_attributes-must_use.stderr
index 231d799057c..001ec52ddd9 100644
--- a/tests/ui/lint/unused/unused_attributes-must_use.stderr
+++ b/tests/ui/lint/unused/unused_attributes-must_use.stderr
@@ -12,18 +12,6 @@ note: the lint level is defined here
 LL | #![deny(unused_attributes, unused_must_use)]
    |         ^^^^^^^^^^^^^^^^^
 
-error: unused attribute `must_use`
-  --> $DIR/unused_attributes-must_use.rs:68:1
-   |
-LL | #[must_use]
-   | ^^^^^^^^^^^
-   |
-note: the built-in attribute `must_use` will be ignored, since it's applied to the macro invocation `global_asm`
-  --> $DIR/unused_attributes-must_use.rs:71:1
-   |
-LL | global_asm!("");
-   | ^^^^^^^^^^
-
 error: `#[must_use]` attribute cannot be used on extern crates
   --> $DIR/unused_attributes-must_use.rs:7:1
    |
@@ -295,5 +283,5 @@ help: use `let _ = ...` to ignore the resulting value
 LL |     let _ = ().get_four();
    |     +++++++
 
-error: aborting due to 30 previous errors
+error: aborting due to 29 previous errors