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With the revert of PR 83091, swap is not a const fn anymore.

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(for the short term, that is; see issue 84297.)
This commit is contained in:
Felix S. Klock II 2021-06-04 15:44:25 -04:00
parent a5cb9afad8
commit 34deda3cc2
2 changed files with 9 additions and 2 deletions
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1
src/test/ui/thread-local-static.rs
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@ -11,6 +11,7 @@ const fn g(x: &mut [u32; 8]) {
//~| ERROR mutable references are not allowed //~| ERROR mutable references are not allowed
//~| ERROR use of mutable static is unsafe //~| ERROR use of mutable static is unsafe
//~| constant functions cannot refer to statics //~| constant functions cannot refer to statics
//~| ERROR calls in constant functions are limited to constant functions
} }
fn main() {} fn main() {}

10
src/test/ui/thread-local-static.stderr
View File

@ -30,6 +30,12 @@ LL | std::mem::swap(x, &mut STATIC_VAR_2)
= note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information = note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
= help: add `#![feature(const_mut_refs)]` to the crate attributes to enable = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
--> $DIR/thread-local-static.rs:9:5
|
LL | std::mem::swap(x, &mut STATIC_VAR_2)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0133]: use of mutable static is unsafe and requires unsafe function or block error[E0133]: use of mutable static is unsafe and requires unsafe function or block
--> $DIR/thread-local-static.rs:9:23 --> $DIR/thread-local-static.rs:9:23
| |
@ -38,7 +44,7 @@ LL | std::mem::swap(x, &mut STATIC_VAR_2)
| |
= note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior = note: mutable statics can be mutated by multiple threads: aliasing violations or data races will cause undefined behavior
error: aborting due to 5 previous errors error: aborting due to 6 previous errors
Some errors have detailed explanations: E0013, E0133, E0658. Some errors have detailed explanations: E0013, E0015, E0133, E0658.
For more information about an error, try `rustc --explain E0013`. For more information about an error, try `rustc --explain E0013`.