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Fix ICE in named_arguments_used_positionally lint

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This commit is contained in:
Michael Goulet 2022-07-14 20:45:23 -07:00
parent 0fe5390a88
commit b71a09fda0
2 changed files with 25 additions and 9 deletions
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13
compiler/rustc_builtin_macros/src/format.rs
View file

@ -16,7 +16,7 @@ use smallvec::SmallVec;
use rustc_lint_defs::builtin::NAMED_ARGUMENTS_USED_POSITIONALLY;
use rustc_lint_defs::{BufferedEarlyLint, BuiltinLintDiagnostics, LintId};
use rustc_parse_format::{Count, FormatSpec};
use rustc_parse_format::Count;
use std::borrow::Cow;
use std::collections::hash_map::Entry;
@ -985,20 +985,19 @@ fn lint_named_arguments_used_positionally(
}
_ => {}
};
match a.format {
FormatSpec { width: Count::CountIsName(s, _), .. }
| FormatSpec { precision: Count::CountIsName(s, _), .. } => {
if let Count::CountIsName(s, _) = a.format.width {
used_argument_names.insert(s);
}
if let Count::CountIsName(s, _) = a.format.precision {
used_argument_names.insert(s);
}
_ => {}
};
}
}
for (symbol, (index, span)) in names {
if !used_argument_names.contains(symbol.as_str()) {
let msg = format!("named argument `{}` is not used by name", symbol.as_str());
let arg_span = cx.arg_spans[index];
let arg_span = cx.arg_spans.get(index).copied().unwrap_or(span);
cx.ecx.buffered_early_lint.push(BufferedEarlyLint {
span: MultiSpan::from_span(span),
msg: msg.clone(),

17
src/test/ui/macros/issue-99261.rs Normal file
View file

@ -0,0 +1,17 @@
// check-pass
#![deny(named_arguments_used_positionally)]
fn main() {
let value: f64 = 314.15926;
let digits_before_decimal = 1;
let digits_after_decimal = 2;
let width = digits_before_decimal + 1 + digits_after_decimal;
println!(
"{value:0>width$.digits_after_decimal$}",
value = value,
width = width,
digits_after_decimal = digits_after_decimal,
);
}