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Use LitKind::Err for floats with empty exponents.

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This prevents a follow-up type error in a test, which seems fine.
This commit is contained in:
Nicholas Nethercote 2024-02-28 15:49:48 +11:00
parent 1e4f9e302c
commit 951f2d9ae2
5 changed files with 6 additions and 35 deletions
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6
compiler/rustc_parse/src/lexer/mod.rs
View File

@ -501,9 +501,11 @@ impl<'sess, 'src> StringReader<'sess, 'src> {
(kind, self.symbol_from_to(start, end))
}
rustc_lexer::LiteralKind::Float { base, empty_exponent } => {
let mut kind = token::Float;
if empty_exponent {
let span = self.mk_sp(start, self.pos);
self.dcx().emit_err(errors::EmptyExponentFloat { span });
let guar = self.dcx().emit_err(errors::EmptyExponentFloat { span });
kind = token::Err(guar);
}
let base = match base {
Base::Hexadecimal => Some("hexadecimal"),
@ -515,7 +517,7 @@ impl<'sess, 'src> StringReader<'sess, 'src> {
let span = self.mk_sp(start, end);
self.dcx().emit_err(errors::FloatLiteralUnsupportedBase { span, base });
}
(token::Float, self.symbol_from_to(start, end))
(kind, self.symbol_from_to(start, end))
}
}
}

2
src/tools/clippy/tests/ui/crashes/ice-10912.rs
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@ -2,7 +2,5 @@
//@no-rustfix
fn f2() -> impl Sized { && 3.14159265358979323846E }
//~^ ERROR: expected at least one digit in exponent
//~| ERROR: long literal lacking separators
//~| NOTE: `-D clippy::unreadable-literal` implied by `-D warnings`
fn main() {}

11
src/tools/clippy/tests/ui/crashes/ice-10912.stderr
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@ -4,14 +4,5 @@ error: expected at least one digit in exponent
LL | fn f2() -> impl Sized { && 3.14159265358979323846E }
| ^^^^^^^^^^^^^^^^^^^^^^^
error: long literal lacking separators
--> tests/ui/crashes/ice-10912.rs:3:28
|
LL | fn f2() -> impl Sized { && 3.14159265358979323846E }
| ^^^^^^^^^^^^^^^^^^^^^^^ help: consider: `3.141_592_653_589_793_238_46`
|
= note: `-D clippy::unreadable-literal` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::unreadable_literal)]`
error: aborting due to 2 previous errors
error: aborting due to 1 previous error

1
tests/ui/did_you_mean/issue-49746-unicode-confusable-in-float-literal-expt.rs
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@ -1,6 +1,5 @@
const UNIVERSAL_GRAVITATIONAL_CONSTANT: f64 = 6.674e−11; // m³⋅kg⁻¹⋅s⁻²
//~^ ERROR expected at least one digit in exponent
//~| ERROR unknown start of token: \u{2212}
//~| ERROR cannot subtract `{integer}` from `{float}`
fn main() {}

21
tests/ui/did_you_mean/issue-49746-unicode-confusable-in-float-literal-expt.stderr
View File

@ -15,24 +15,5 @@ help: Unicode character '−' (Minus Sign) looks like '-' (Minus/Hyphen), but it
LL | const UNIVERSAL_GRAVITATIONAL_CONSTANT: f64 = 6.674e-11; // m³⋅kg⁻¹⋅s⁻²
| ~
error[E0277]: cannot subtract `{integer}` from `{float}`
--> $DIR/issue-49746-unicode-confusable-in-float-literal-expt.rs:1:53
|
LL | const UNIVERSAL_GRAVITATIONAL_CONSTANT: f64 = 6.674e−11; // m³⋅kg⁻¹⋅s⁻²
| ^ no implementation for `{float} - {integer}`
|
= help: the trait `Sub<{integer}>` is not implemented for `{float}`
= help: the following other types implement trait `Sub<Rhs>`:
<isize as Sub>
<isize as Sub<&isize>>
<i8 as Sub>
<i8 as Sub<&i8>>
<i16 as Sub>
<i16 as Sub<&i16>>
<i32 as Sub>
<i32 as Sub<&i32>>
and 48 others
error: aborting due to 2 previous errors
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0277`.