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Diffstat (limited to '')
| -rw-r--r-- | src/test/ui/closures/coerce-unsafe-to-closure.stderr | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/closures/coerce-unsafe-to-closure.stderr b/src/test/ui/closures/coerce-unsafe-to-closure.stderr new file mode 100644 index 000000000..bd095c2d8 --- /dev/null +++ b/src/test/ui/closures/coerce-unsafe-to-closure.stderr @@ -0,0 +1,19 @@ +error[E0277]: expected a `FnOnce<(&str,)>` closure, found `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}` + --> $DIR/coerce-unsafe-to-closure.rs:2:44 + | +LL | let x: Option<&[u8]> = Some("foo").map(std::mem::transmute); + | --- ^^^^^^^^^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }` + | | + | required by a bound introduced by this call + | + = help: the trait `FnOnce<(&str,)>` is not implemented for `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}` + = note: unsafe function cannot be called generically without an unsafe block +note: required by a bound in `Option::<T>::map` + --> $SRC_DIR/core/src/option.rs:LL:COL + | +LL | F: ~const FnOnce(T) -> U, + | ^^^^^^^^^^^^^^^^^^^^^ required by this bound in `Option::<T>::map` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. |