mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Rollup merge of #89505 - Aaron1011:nll-const-test, r=Mark-Simulacrum

Browse Source 
Add regression test for spurious const error with NLL

Fixes #55825
This commit is contained in:
Manish Goregaokar 2021-10-03 23:13:25 -07:00 committed by GitHub
commit 5c5dde8f0a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/test/ui/nll/issue-55825-const-fn.rs Normal file
View File

@ -0,0 +1,8 @@
// Regression test for issue #55825
// Tests that we don't emit a spurious warning in NLL mode
#![feature(nll)]
const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() } //~ ERROR const
fn main() { }

12
src/test/ui/nll/issue-55825-const-fn.stderr Normal file
View File

@ -0,0 +1,12 @@
error[E0658]: trait objects in const fn are unstable
--> $DIR/issue-55825-const-fn.rs:6:32
|
LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error: aborting due to previous error
For more information about this error, try `rustc --explain E0658`.