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remove redundant clones #110364

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Merged
merged 1 commit into from
Apr 16, 2023
Merged

remove redundant clones #110364

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8 changes: 3 additions & 5 deletions compiler/rustc_parse/src/parser/diagnostics.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -570,15 +570,13 @@ impl<'a> Parser<'a> {
let expect = tokens_to_string(&expected);
let actual = super::token_descr(&self.token);
let (msg_exp, (label_sp, label_exp)) = if expected.len() > 1 {
let fmt = format!("expected one of {expect}, found {actual}");
let short_expect = if expected.len() > 6 {
format!("{} possible tokens", expected.len())
} else {
expect.clone()
expect
};
(
format!("expected one of {expect}, found {actual}"),
(self.prev_token.span.shrink_to_hi(), format!("expected one of {short_expect}")),
)
(fmt, (self.prev_token.span.shrink_to_hi(), format!("expected one of {short_expect}")))
} else if expected.is_empty() {
(
format!("unexpected token: {actual}"),
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15 changes: 9 additions & 6 deletions compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2944,22 +2944,25 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
rustc_transmute::Answer::No(reason) => {
let dst = trait_ref.skip_binder().substs.type_at(0);
let src = trait_ref.skip_binder().substs.type_at(1);
let custom_err_msg = format!("`{src}` cannot be safely transmuted into `{dst}` in the defining scope of `{scope}`").to_string();
let custom_err_msg = format!(
"`{src}` cannot be safely transmuted into `{dst}` in the defining scope of `{scope}`"
);
let reason_msg = match reason {
rustc_transmute::Reason::SrcIsUnspecified => {
format!("`{src}` does not have a well-specified layout").to_string()
format!("`{src}` does not have a well-specified layout")
}

rustc_transmute::Reason::DstIsUnspecified => {
format!("`{dst}` does not have a well-specified layout").to_string()
format!("`{dst}` does not have a well-specified layout")
}

rustc_transmute::Reason::DstIsBitIncompatible => {
format!("At least one value of `{src}` isn't a bit-valid value of `{dst}`")
.to_string()
}

rustc_transmute::Reason::DstIsPrivate => format!(
"`{dst}` is or contains a type or field that is not visible in that scope"
)
.to_string(),
),
// FIXME(bryangarza): Include the number of bytes of src and dst
rustc_transmute::Reason::DstIsTooBig => {
format!("The size of `{src}` is smaller than the size of `{dst}`")
Expand Down