make a help text for 'cannot find macro' actionable #102881

togami2864 · 2022-10-10T12:37:37Z

fix #102601

rust-highfive · 2022-10-10T12:37:41Z

r? @TaKO8Ki

(rust-highfive has picked a reviewer for you, use r? to override)

togami2864 · 2022-10-10T12:59:35Z

I'll fix any other ui tests had forgot to update after reviews.

compiler-errors · 2022-10-10T17:50:21Z

src/test/ui/macros/issue-102601.stderr

+   |     ^^^^^^^^
+   |
+   = help: consider importing this macro:
+           use hey::bitflags;


I'm pretty sure there's a way to make this into an actual applicable suggestion, instead of just editing the message that this formats. I think that should be done instead of this.

I have one question.
As you say, err.span_suggestions() is more appropriate instead of err.help to show a suggestion.
The output will be like this.

help: consider importing this macro | LL | use hey::bitflags; |

I don't know what to do with the argument Span that I pass to err_suggestions because it is a process in a clause where use_placement_span is None.

if let (IsPattern::Yes, Some(span)) = (is_pattern, use_placement_span){ ..... } else if let Some(span) = use_placement_span { ...... } else { msg.push(':'); for candidate in accessible_path_strings { msg.push('\n'); msg.push_str(&format!("use {};", &candidate.0)); } err.help(&msg); <- I wanna replace it }

https://github.com/togami2864/rust/blob/de66eb0c1831693bac47f088e4eb3fbbf88b15ad/compiler/rustc_resolve/src/diagnostics.rs#L2512-L2552

Do you have any idea or are these any code of similar processing?

compiler-errors · 2022-12-15T15:50:36Z

r? compiler-errors i'll take a look at this later

compiler-errors · 2022-12-15T15:51:05Z

r? @compiler-errors oops 😅

compiler-errors · 2022-12-20T04:19:32Z

@togami2864: Disregard my last suggestion about span_suggestions. Seems difficult to do. Please rebase this PR and fix the tests and I can approve.

rust-log-analyzer · 2022-12-20T12:57:54Z

The job x86_64-gnu-llvm-13 failed! Check out the build log: (web) (plain)

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---

---- [ui] src/test/ui/empty/empty-macro-use.rs stdout ----
diff of stderr:

4 LL |     macro_two!();
6    |
-    = note: consider importing this macro:
-            two_macros::macro_two
+    = help: consider importing this macro:
---
To only update this specific test, also pass `--test-args empty/empty-macro-use.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/empty/empty-macro-use.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/empty/empty-macro-use" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/empty/empty-macro-use/auxiliary"
stdout: none
--- stderr -------------------------------
error: cannot find macro `macro_two` in this scope
   |
   |
LL |     macro_two!();
   |
   = help: consider importing this macro:
           use two_macros::macro_two;

---
Some tests failed in compiletest suite=ui mode=ui host=x86_64-unknown-linux-gnu target=x86_64-unknown-linux-gnu
---- [ui] src/test/ui/hygiene/globs.rs stdout ----
diff of stderr:

51 LL |         n!(f);
53    |
-    = note: consider importing this function:
-            foo::f
+    = help: consider importing this function:
---
To only update this specific test, also pass `--test-args hygiene/globs.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/hygiene/globs.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/hygiene/globs" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/hygiene/globs/auxiliary"
stdout: none
--- stderr -------------------------------
error[E0425]: cannot find function `f` in this scope
   |
LL |     pub fn g() {}
LL |     pub fn g() {}
   |     ---------- similarly named function `g` defined here
...
LL |         f(); //~ ERROR cannot find function `f` in this scope
   |
help: a function with a similar name exists
   |
   |
LL |         g(); //~ ERROR cannot find function `f` in this scope
help: consider importing this function
   |
LL | use foo::f;
   |
   |

error[E0425]: cannot find function `g` in this scope
  --> /checkout/src/test/ui/hygiene/globs.rs:15:5
   |
LL |       pub fn f() {}
   |       ---------- similarly named function `f` defined here
...
LL |       g(); //~ ERROR cannot find function `g` in this scope
...
LL | /     m! {
LL | /     m! {
LL | |         use bar::*;
LL | |         g();
LL | |         f(); //~ ERROR cannot find function `f` in this scope
LL | |     }
   |
   = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
help: a function with a similar name exists
   |
   |
LL |     f(); //~ ERROR cannot find function `g` in this scope
help: consider importing this function
   |
   |
LL | use bar::g;

error[E0425]: cannot find function `f` in this scope
  --> /checkout/src/test/ui/hygiene/globs.rs:61:12
   |
   |
LL | n!(f);
...
...
LL |         n!(f); //~ ERROR cannot find function `f` in this scope
   |
   = help: consider importing this function:
           use foo::f;
   = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)
   = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0425]: cannot find function `f` in this scope
  --> /checkout/src/test/ui/hygiene/globs.rs:65:17
   |
LL | n!(f);
...
...
LL |                 f //~ ERROR cannot find function `f` in this scope
   |
   = help: consider importing this function:
           use foo::f;
   = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)
---
To only update this specific test, also pass `--test-args hygiene/no_implicit_prelude-2018.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/hygiene/no_implicit_prelude-2018.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/hygiene/no_implicit_prelude-2018" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/hygiene/no_implicit_prelude-2018/auxiliary" "--edition=2018"
stdout: none
--- stderr -------------------------------
  --> /checkout/src/test/ui/hygiene/no_implicit_prelude-2018.rs:7:9
   |
   |
LL |         print!(); //~ ERROR cannot find macro `print` in this scope
   |
   = help: consider importing this macro:
           use std::print;

---
error: /checkout/src/test/ui/macros/issue-102601.rs:12: expected help message not found: consider importing this macro:

error: 1 unexpected errors found, 1 expected errors not found
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/macros/issue-102601.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/issue-102601" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/issue-102601/auxiliary"
    Error {
        line_num: 6,
        kind: Some(
            Help,
---

---- [ui] src/test/ui/macros/issue-88228.rs stdout ----
diff of stderr:

4 LL |     bla!();
6    |
-    = note: consider importing this macro:
-            crate::hey::bla
+    = help: consider importing this macro:
+    = help: consider importing this macro:
+            use crate::hey::bla;
10 error: cannot find derive macro `println` in this scope
11   --> $DIR/issue-88228.rs:14:10


21 LL | #[derive(Bla)]
23    |
-    = note: consider importing this derive macro:
-            crate::hey::Bla
+    = help: consider importing this derive macro:
+    = help: consider importing this derive macro:
+            use crate::hey::Bla;
27 error: aborting due to 3 previous errors
28 



The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/issue-88228/issue-88228.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args macros/issue-88228.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/macros/issue-88228.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/issue-88228" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/issue-88228/auxiliary" "-Z" "deduplicate-diagnostics=yes" "--edition=2018"
stdout: none
--- stderr -------------------------------
error: cannot find macro `bla` in this scope
   |
   |
LL |     bla!();
   |
   = help: consider importing this macro:
   = help: consider importing this macro:
           use crate::hey::bla;
error: cannot find derive macro `println` in this scope
  --> /checkout/src/test/ui/macros/issue-88228.rs:14:10
   |
   |
LL | #[derive(println)]
   |
   = note: `println` is in scope, but it is a function-like macro


error: cannot find derive macro `Bla` in this scope
   |
   |
LL | #[derive(Bla)]
   |
   = help: consider importing this derive macro:
   = help: consider importing this derive macro:
           use crate::hey::Bla;
error: aborting due to 3 previous errors
------------------------------------------



---- [ui] src/test/ui/macros/macro-use-wrong-name.rs stdout ----
diff of stderr:

9 LL | macro_rules! macro_one { () => ("one") }
10    | ---------------------- similarly named macro `macro_one` defined here
-    = note: consider importing this macro:
-            two_macros::macro_two
+    = help: consider importing this macro:
+            use two_macros::macro_two;
---
To only update this specific test, also pass `--test-args macros/macro-use-wrong-name.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/macros/macro-use-wrong-name.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/macro-use-wrong-name" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/macros/macro-use-wrong-name/auxiliary"
stdout: none
--- stderr -------------------------------
error: cannot find macro `macro_two` in this scope
   |
   |
LL |     macro_two!();
   |     ^^^^^^^^^ help: a macro with a similar name exists: `macro_one`
  ::: /checkout/src/test/ui/macros/auxiliary/two_macros.rs:2:1
   |
   |
LL | macro_rules! macro_one { () => ("one") }
   | ---------------------- similarly named macro `macro_one` defined here
   = help: consider importing this macro:
           use two_macros::macro_two;

error: aborting due to previous error
error: aborting due to previous error
------------------------------------------


---- [ui] src/test/ui/missing/missing-macro-use.rs stdout ----
diff of stderr:

4 LL |     macro_two!();
6    |
-    = note: consider importing this macro:
-            two_macros::macro_two
+    = help: consider importing this macro:
---
To only update this specific test, also pass `--test-args missing/missing-macro-use.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/missing/missing-macro-use.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/missing/missing-macro-use" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/missing/missing-macro-use/auxiliary"
stdout: none
--- stderr -------------------------------
error: cannot find macro `macro_two` in this scope
   |
   |
LL |     macro_two!();
   |
   = help: consider importing this macro:
           use two_macros::macro_two;


error: aborting due to previous error
------------------------------------------


---- [ui] src/test/ui/proc-macro/derive-helper-shadowing.rs stdout ----
diff of stderr:

16 LL |             #[derive(GenHelperUse)]
18    |
-    = note: consider importing this attribute macro:
-            empty_helper
+    = help: consider importing this attribute macro:
+    = help: consider importing this attribute macro:
+            use empty_helper;
21    = note: this error originates in the derive macro `GenHelperUse` (in Nightly builds, run with -Z macro-backtrace for more info)
22 
23 error: cannot find attribute `empty_helper` in this scope

29 LL |             gen_helper_use!();
31    |
-    = note: consider importing this attribute macro:
-            crate::empty_helper
+    = help: consider importing this attribute macro:
+    = help: consider importing this attribute macro:
+            use crate::empty_helper;
34    = note: this error originates in the macro `gen_helper_use` (in Nightly builds, run with -Z macro-backtrace for more info)
35 
36 error[E0659]: `empty_helper` is ambiguous

The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/derive-helper-shadowing/derive-helper-shadowing.stderr
To update references, rerun the tests and pass the `--bless` flag
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args proc-macro/derive-helper-shadowing.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/proc-macro/derive-helper-shadowing.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/derive-helper-shadowing" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/derive-helper-shadowing/auxiliary" "--edition=2018"
stdout: none
--- stderr -------------------------------
  --> /checkout/src/test/ui/proc-macro/derive-helper-shadowing.rs:42:15
   |
   |
LL |             #[renamed] //~ ERROR cannot use a derive helper attribute through an import
   |
note: the derive helper attribute imported here
  --> /checkout/src/test/ui/proc-macro/derive-helper-shadowing.rs:41:17
   |
   |
LL |             use empty_helper as renamed;
   |                 ^^^^^^^^^^^^^^^^^^^^^^^

error: cannot find attribute `empty_helper` in this scope
   |
   |
LL |             #[derive(GenHelperUse)] //~ ERROR cannot find attribute `empty_helper` in this scope
   |
   = help: consider importing this attribute macro:
           use empty_helper;
           use empty_helper;
   = note: this error originates in the derive macro `GenHelperUse` (in Nightly builds, run with -Z macro-backtrace for more info)

error: cannot find attribute `empty_helper` in this scope
   |
   |
LL |         #[empty_helper] //~ ERROR cannot find attribute `empty_helper` in this scope
...
...
LL |             gen_helper_use!();
   |
   = help: consider importing this attribute macro:
           use crate::empty_helper;
           use crate::empty_helper;
   = note: this error originates in the macro `gen_helper_use` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0659]: `empty_helper` is ambiguous
   |
   |
LL |         use empty_helper; //~ ERROR `empty_helper` is ambiguous
   |             ^^^^^^^^^^^^ ambiguous name
   |
   = note: ambiguous because of multiple potential import sources
note: `empty_helper` could refer to the derive helper attribute defined here
   |
   |
LL | #[derive(Empty)]
   |          ^^^^^
note: `empty_helper` could also refer to the attribute macro imported here
   |
   |
LL | use test_macros::empty_attr as empty_helper;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = help: use `crate::empty_helper` to refer to this attribute macro unambiguously

error[E0659]: `empty_helper` is ambiguous
   |
   |
LL | #[empty_helper] //~ ERROR `empty_helper` is ambiguous
   |   ^^^^^^^^^^^^ ambiguous name
   = note: ambiguous because of a name conflict with a derive helper attribute
   = note: ambiguous because of a name conflict with a derive helper attribute
note: `empty_helper` could refer to the derive helper attribute defined here
   |
   |
LL | #[derive(Empty)]
   |          ^^^^^
note: `empty_helper` could also refer to the attribute macro imported here
   |
   |
LL | use test_macros::empty_attr as empty_helper;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = help: use `crate::empty_helper` to refer to this attribute macro unambiguously
warning: derive helper attribute is used before it is introduced
  --> /checkout/src/test/ui/proc-macro/derive-helper-shadowing.rs:19:3
   |
   |
LL | #[empty_helper] //~ ERROR `empty_helper` is ambiguous
...
...
LL | #[derive(Empty)]
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
   = note: `#[warn(legacy_derive_helpers)]` on by default
---

---- [ui] src/test/ui/proc-macro/generate-mod.rs stdout ----
diff of stderr:

4 LL | generate_mod::check!();
6    |
-    = note: consider importing this struct:
-            FromOutside
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use FromOutside;
9    = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)
11 error[E0412]: cannot find type `Outer` in this scope


14 LL | generate_mod::check!();
16    |
-    = note: consider importing this struct:
-            Outer
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use Outer;
19    = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)
20 
21 error[E0412]: cannot find type `FromOutside` in this scope

24 LL | #[generate_mod::check_attr]
26    |
-    = note: consider importing this struct:
-            FromOutside
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use FromOutside;
29    = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
31 error[E0412]: cannot find type `OuterAttr` in this scope


34 LL | #[generate_mod::check_attr]
36    |
-    = note: consider importing this struct:
-            OuterAttr
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use OuterAttr;
39    = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
40 
41 error[E0412]: cannot find type `FromOutside` in this scope

44 LL | #[derive(generate_mod::CheckDerive)]
46    |
-    = note: consider importing this struct:
-            FromOutside
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use FromOutside;
49    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
51 error[E0412]: cannot find type `OuterDerive` in this scope


54 LL | #[derive(generate_mod::CheckDerive)]
56    |
-    = note: consider importing this struct:
-            OuterDerive
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use OuterDerive;
59    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
60 
61 error[E0412]: cannot find type `FromOutside` in this scope

64 LL |     #[derive(generate_mod::CheckDerive)]
66    |
-    = note: consider importing this struct:
-            FromOutside
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use FromOutside;
69    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
71 error[E0412]: cannot find type `OuterDerive` in this scope


74 LL |     #[derive(generate_mod::CheckDerive)]
76    |
-    = note: consider importing this struct:
-            OuterDerive
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use OuterDerive;
79    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
80 
81 error[E0412]: cannot find type `FromOutside` in this scope

84 LL | #[derive(generate_mod::CheckDeriveLint)]
86    |
-    = note: consider importing this struct:
-            FromOutside
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use FromOutside;
89    = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
91 error[E0412]: cannot find type `OuterDeriveLint` in this scope


94 LL | #[derive(generate_mod::CheckDeriveLint)]
96    |
-    = note: consider importing this struct:
-            OuterDeriveLint
+    = help: consider importing this struct:
+    = help: consider importing this struct:
+            use OuterDeriveLint;
99    = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
101 error: aborting due to 10 previous errors


The actual stderr differed from the expected stderr.
The actual stderr differed from the expected stderr.
Actual stderr saved to /checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/generate-mod/generate-mod.stderr
To update references, rerun the tests and pass the `--bless` flag
To only update this specific test, also pass `--test-args proc-macro/generate-mod.rs`

error: 1 errors occurred comparing output.
status: exit status: 1
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/proc-macro/generate-mod.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/generate-mod" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/proc-macro/generate-mod/auxiliary"
stdout: none
--- stderr -------------------------------
error[E0412]: cannot find type `FromOutside` in this scope
   |
   |
LL | generate_mod::check!(); //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use FromOutside;
           use FromOutside;
   = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Outer` in this scope
  --> /checkout/src/test/ui/proc-macro/generate-mod.rs:9:1
   |
   |
LL | generate_mod::check!(); //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use Outer;
           use Outer;
   = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `FromOutside` in this scope
   |
   |
LL | #[generate_mod::check_attr] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use FromOutside;
           use FromOutside;
   = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `OuterAttr` in this scope
  --> /checkout/src/test/ui/proc-macro/generate-mod.rs:12:1
   |
   |
LL | #[generate_mod::check_attr] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use OuterAttr;
           use OuterAttr;
   = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `FromOutside` in this scope
   |
   |
LL | #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use FromOutside;
           use FromOutside;
   = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `OuterDerive` in this scope
  --> /checkout/src/test/ui/proc-macro/generate-mod.rs:16:10
   |
   |
LL | #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use OuterDerive;
           use OuterDerive;
   = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `FromOutside` in this scope
   |
   |
LL |     #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use FromOutside;
           use FromOutside;
   = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `OuterDerive` in this scope
  --> /checkout/src/test/ui/proc-macro/generate-mod.rs:21:14
   |
   |
LL |     #[derive(generate_mod::CheckDerive)] //~ ERROR cannot find type `FromOutside` in this scope
   |
   = help: consider importing this struct:
           use OuterDerive;
           use OuterDerive;
   = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0412]: cannot find type `FromOutside` in this scope
   |
   |
LL | #[derive(generate_mod::CheckDeriveLint)] //~  ERROR cannot find type `OuterDeriveLint` in this scope
   |
   = help: consider importing this struct:
           use FromOutside;
           use FromOutside;
   = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `OuterDeriveLint` in this scope
  --> /checkout/src/test/ui/proc-macro/generate-mod.rs:26:10
   |
   |
LL | #[derive(generate_mod::CheckDeriveLint)] //~  ERROR cannot find type `OuterDeriveLint` in this scope
   |
   = help: consider importing this struct:
           use OuterDeriveLint;
           use OuterDeriveLint;
   = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 10 previous errors

For more information about this error, try `rustc --explain E0412`.
------------------------------------------

bors · 2023-01-17T18:07:30Z

☔ The latest upstream changes (presumably #106984) made this pull request unmergeable. Please resolve the merge conflicts.

Dylan-DPC · 2023-01-26T11:16:51Z

~~@TOGAMI any updates on this?~~
Edit: oops sorry wrong ping :D

@togami2864 any updates on this?

Dylan-DPC · 2023-02-24T08:55:32Z

Closing this as inactive. Feel free to make a new pr if needed

rust-highfive assigned TaKO8Ki Oct 10, 2022

rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Oct 10, 2022

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 10, 2022

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compiler-errors reviewed Oct 10, 2022

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rustbot assigned compiler-errors and unassigned TaKO8Ki Dec 15, 2022

make a help text for 'cannot find macro' actionable

5c8e3c0

togami2864 force-pushed the make-help-message-actionable-in-macro branch from de66eb0 to 5c8e3c0 Compare December 20, 2022 12:40

Noratrieb added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 27, 2022

Dylan-DPC closed this Feb 24, 2023

Dylan-DPC added S-inactive Status: Inactive and waiting on the author. This is often applied to closed PRs. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Feb 24, 2023

sladyn98 mentioned this pull request May 30, 2023

make help text for cannot find macro actionable #112091

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make a help text for 'cannot find macro' actionable #102881

make a help text for 'cannot find macro' actionable #102881

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Dylan-DPC commented Feb 24, 2023

make a help text for 'cannot find macro' actionable #102881

make a help text for 'cannot find macro' actionable #102881

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