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ICE: "Span must not be empty and have no suggestion" -Wunused-lifetimes #104432
Labels
A-diagnostics
Area: Messages for errors, warnings, and lints
C-bug
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
requires-debug-assertions
This issue requires a build of rustc or tooling with debug-assertions in some way
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Comments
matthiaskrgr
added
A-diagnostics
Area: Messages for errors, warnings, and lints
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
C-bug
Category: This is a bug.
requires-debug-assertions
This issue requires a build of rustc or tooling with debug-assertions in some way
labels
Nov 15, 2022
lol, nightly emits this:D :
|
another one from duplicate_lifetimes.rs // Ensure that lifetime parameter names are modernized before we check for
// duplicates.
#![feature(decl_macro, rustc_attrs)]
#[rustc_macro_transparency = "semitransparent"]
macro m($a:lifetime) {
fn g<$a, 'a>() {} //~ ERROR the name `'a` is already used for a generic parameter
}
#[rustc_macro_transparency = "transparent"]
macro n($a:lifetime) {
fn h<$a, 'a>() {} //~ ERROR the name `'a` is already used for a generic parameter
}
m!('a);
n!('a);
fn main() {} |
@TaKO8Ki any updates? 🙃 |
@rustbot claim I think I got a fix 🙂 |
@rustbot claim |
Dylan-DPC
added a commit
to Dylan-DPC/rust
that referenced
this issue
Feb 9, 2023
…2_fix, r=cjgillot unused-lifetimes: don't warn about lifetimes originating from expanded code previously, we would warn like this: ```` warning: lifetime parameter `'s` never used --> /tmp/unusedlif/code.rs:6:62 | 5 | #[derive(Clone)] | - help: elide the unused lifetime 6 | struct ShimMethod4<T: Trait2 + 'static>(pub &'static dyn for<'s> Fn(&'s mut T::As)); | ^^ | = note: requested on the command line with `-W unused-lifetimes` ```` Fixes rust-lang#104432
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Labels
A-diagnostics
Area: Messages for errors, warnings, and lints
C-bug
Category: This is a bug.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
requires-debug-assertions
This issue requires a build of rustc or tooling with debug-assertions in some way
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Code
code from
src/test/ui/deriving/issue-89188-gat-hrtb.rs
requires debug assertions
Meta
rustc --version --verbose
:Error output
rustc issue-89188-gat-hrtb.rs -Wunused-lifetimes
Backtrace
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