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Fix to_string_in_format_args
with macro call receiver
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parent
76856ffb57
commit
95b295d976
4 changed files with 15 additions and 7 deletions
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@ -424,14 +424,14 @@ impl<'a, 'tcx> FormatArgsExpr<'a, 'tcx> {
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count_needed_derefs(receiver_ty, cx.typeck_results().expr_adjustments(receiver).iter())
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&& implements_trait(cx, target, display_trait_id, &[])
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&& let Some(sized_trait_id) = cx.tcx.lang_items().sized_trait()
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&& let Some(receiver_snippet) = snippet_opt(cx, receiver.span)
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&& let Some(receiver_snippet) = snippet_opt(cx, receiver.span.source_callsite())
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{
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let needs_ref = !implements_trait(cx, receiver_ty, sized_trait_id, &[]);
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if n_needed_derefs == 0 && !needs_ref {
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span_lint_and_sugg(
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cx,
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TO_STRING_IN_FORMAT_ARGS,
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to_string_span.with_lo(receiver.span.hi()),
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to_string_span.with_lo(receiver.span.source_callsite().hi()),
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format!("`to_string` applied to a type that implements `Display` in `{name}!` args"),
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"remove this",
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String::new(),
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@ -104,6 +104,7 @@ fn main() {
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println!("{foo}{bar}", foo = "foo", bar = "bar");
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println!("{foo}{bar}", bar = "bar", foo = "foo");
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println!("{foo}{bar}", bar = "bar", foo = "foo");
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println!("{}", my_other_macro!());
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// negative tests
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println!("error: something failed at {}", Somewhere.to_string());
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@ -104,6 +104,7 @@ fn main() {
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println!("{foo}{bar}", foo = "foo", bar = "bar".to_string());
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println!("{foo}{bar}", bar = "bar".to_string(), foo = "foo");
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println!("{foo}{bar}", bar = "bar", foo = "foo".to_string());
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println!("{}", my_other_macro!().to_string());
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// negative tests
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println!("error: something failed at {}", Somewhere.to_string());
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@ -127,29 +127,35 @@ error: `to_string` applied to a type that implements `Display` in `println!` arg
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LL | println!("{foo}{bar}", bar = "bar", foo = "foo".to_string());
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| ^^^^^^^^^^^^ help: remove this
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error: `to_string` applied to a type that implements `Display` in `println!` args
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--> tests/ui/format_args.rs:107:37
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LL | println!("{}", my_other_macro!().to_string());
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| ^^^^^^^^^^^^ help: remove this
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error: `to_string` applied to a type that implements `Display` in `print!` args
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--> tests/ui/format_args.rs:118:37
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--> tests/ui/format_args.rs:119:37
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LL | print!("{}", (Location::caller().to_string()));
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| ^^^^^^^^^^^^ help: remove this
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error: `to_string` applied to a type that implements `Display` in `print!` args
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--> tests/ui/format_args.rs:119:39
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--> tests/ui/format_args.rs:120:39
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LL | print!("{}", ((Location::caller()).to_string()));
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| ^^^^^^^^^^^^ help: remove this
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error: `to_string` applied to a type that implements `Display` in `format!` args
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--> tests/ui/format_args.rs:147:38
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--> tests/ui/format_args.rs:148:38
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LL | let x = format!("{} {}", a, b.to_string());
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| ^^^^^^^^^^^^ help: remove this
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error: `to_string` applied to a type that implements `Display` in `println!` args
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--> tests/ui/format_args.rs:161:24
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--> tests/ui/format_args.rs:162:24
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LL | println!("{}", original[..10].to_string());
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use this: `&original[..10]`
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error: aborting due to 25 previous errors
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error: aborting due to 26 previous errors
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