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make note less verbose

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Catherine 2023-06-25 04:28:40 -05:00
parent b6f194b48c
commit a5ae9044fb
2 changed files with 20 additions and 32 deletions
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16
clippy_lints/src/drop_forget_ref.rs
View file

@ -120,7 +120,7 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
let arg_ty = cx.typeck_results().expr_ty(arg); let arg_ty = cx.typeck_results().expr_ty(arg);
let is_copy = is_copy(cx, arg_ty); let is_copy = is_copy(cx, arg_ty);
let drop_is_single_call_in_arm = is_single_call_in_arm(cx, arg, expr); let drop_is_single_call_in_arm = is_single_call_in_arm(cx, arg, expr);
let (lint, msg) = match fn_name { let (lint, msg, note_span) = match fn_name {
// early return for uplifted lints: dropping_references, dropping_copy_types, forgetting_references, forgetting_copy_types // early return for uplifted lints: dropping_references, dropping_copy_types, forgetting_references, forgetting_copy_types
sym::mem_drop if arg_ty.is_ref() && !drop_is_single_call_in_arm => return, sym::mem_drop if arg_ty.is_ref() && !drop_is_single_call_in_arm => return,
sym::mem_forget if arg_ty.is_ref() => return, sym::mem_forget if arg_ty.is_ref() => return,
@ -144,20 +144,24 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
|| drop_is_single_call_in_arm || drop_is_single_call_in_arm
) => ) =>
{ {
(DROP_NON_DROP, DROP_NON_DROP_SUMMARY.into()) (DROP_NON_DROP, DROP_NON_DROP_SUMMARY.into(), Some(arg.span))
}, },
sym::mem_forget => { sym::mem_forget => {
if arg_ty.needs_drop(cx.tcx, cx.param_env) { if arg_ty.needs_drop(cx.tcx, cx.param_env) {
(MEM_FORGET, Cow::Owned(format!( (
MEM_FORGET,
Cow::Owned(format!(
"usage of `mem::forget` on {}", "usage of `mem::forget` on {}",
if arg_ty.ty_adt_def().map_or(false, |def| def.has_dtor(cx.tcx)) { if arg_ty.ty_adt_def().map_or(false, |def| def.has_dtor(cx.tcx)) {
"`Drop` type" "`Drop` type"
} else { } else {
"type with `Drop` fields" "type with `Drop` fields"
} }
))) )),
None,
)
} else { } else {
(FORGET_NON_DROP, FORGET_NON_DROP_SUMMARY.into()) (FORGET_NON_DROP, FORGET_NON_DROP_SUMMARY.into(), Some(arg.span))
} }
} }
_ => return, _ => return,
@ -167,7 +171,7 @@ impl<'tcx> LateLintPass<'tcx> for DropForgetRef {
lint, lint,
expr.span, expr.span,
&msg, &msg,
Some(arg.span), note_span,
&format!("argument has type `{arg_ty}`"), &format!("argument has type `{arg_ty}`"),
); );
} }

24
tests/ui/mem_forget.stderr
View file

@ -4,11 +4,7 @@ error: usage of `mem::forget` on `Drop` type
LL | memstuff::forget(six); LL | memstuff::forget(six);
| ^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^
| |
note: argument has type `std::sync::Arc<i32>` = note: argument has type `std::sync::Arc<i32>`
--> $DIR/mem_forget.rs:14:22
|
LL | memstuff::forget(six);
| ^^^
= note: `-D clippy::mem-forget` implied by `-D warnings` = note: `-D clippy::mem-forget` implied by `-D warnings`
error: usage of `mem::forget` on `Drop` type error: usage of `mem::forget` on `Drop` type
@ -17,11 +13,7 @@ error: usage of `mem::forget` on `Drop` type
LL | std::mem::forget(seven); LL | std::mem::forget(seven);
| ^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^
| |
note: argument has type `std::rc::Rc<i32>` = note: argument has type `std::rc::Rc<i32>`
--> $DIR/mem_forget.rs:17:22
|
LL | std::mem::forget(seven);
| ^^^^^
error: usage of `mem::forget` on `Drop` type error: usage of `mem::forget` on `Drop` type
--> $DIR/mem_forget.rs:20:5 --> $DIR/mem_forget.rs:20:5
@ -29,11 +21,7 @@ error: usage of `mem::forget` on `Drop` type
LL | forgetSomething(eight); LL | forgetSomething(eight);
| ^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^
| |
note: argument has type `std::vec::Vec<i32>` = note: argument has type `std::vec::Vec<i32>`
--> $DIR/mem_forget.rs:20:21
|
LL | forgetSomething(eight);
| ^^^^^
error: usage of `mem::forget` on type with `Drop` fields error: usage of `mem::forget` on type with `Drop` fields
--> $DIR/mem_forget.rs:23:5 --> $DIR/mem_forget.rs:23:5
@ -41,11 +29,7 @@ error: usage of `mem::forget` on type with `Drop` fields
LL | std::mem::forget(string); LL | std::mem::forget(string);
| ^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^
| |
note: argument has type `std::string::String` = note: argument has type `std::string::String`
--> $DIR/mem_forget.rs:23:22
|
LL | std::mem::forget(string);
| ^^^^^^
error: aborting due to 4 previous errors error: aborting due to 4 previous errors