diff options
Diffstat (limited to 'tests/ui/mismatched_types/suggest-option-asderef-unfixable.stderr')
| -rw-r--r-- | tests/ui/mismatched_types/suggest-option-asderef-unfixable.stderr | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/tests/ui/mismatched_types/suggest-option-asderef-unfixable.stderr b/tests/ui/mismatched_types/suggest-option-asderef-unfixable.stderr new file mode 100644 index 000000000..ecfbd27b1 --- /dev/null +++ b/tests/ui/mismatched_types/suggest-option-asderef-unfixable.stderr @@ -0,0 +1,75 @@ +error[E0631]: type mismatch in function arguments + --> $DIR/suggest-option-asderef-unfixable.rs:24:40 + | +LL | fn takes_str_but_too_many_refs(_: &&str) -> Option<()> { + | ------------------------------------------------------ found signature defined here +... +LL | let _ = produces_string().and_then(takes_str_but_too_many_refs); + | -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected due to this + | | + | required by a bound introduced by this call + | + = note: expected function signature `fn(String) -> _` + found function signature `for<'a, 'b> fn(&'a &'b str) -> _` +note: required by a bound in `Option::<T>::and_then` + --> $SRC_DIR/core/src/option.rs:LL:COL + +error[E0277]: expected a `FnOnce<(String,)>` closure, found `for<'a> extern "C" fn(&'a str) -> Option<()> {takes_str_but_wrong_abi}` + --> $DIR/suggest-option-asderef-unfixable.rs:26:40 + | +LL | let _ = produces_string().and_then(takes_str_but_wrong_abi); + | -------- ^^^^^^^^^^^^^^^^^^^^^^^ expected an `FnOnce<(String,)>` closure, found `for<'a> extern "C" fn(&'a str) -> Option<()> {takes_str_but_wrong_abi}` + | | + | required by a bound introduced by this call + | + = help: the trait `FnOnce<(String,)>` is not implemented for fn item `for<'a> extern "C" fn(&'a str) -> Option<()> {takes_str_but_wrong_abi}` +note: required by a bound in `Option::<T>::and_then` + --> $SRC_DIR/core/src/option.rs:LL:COL + +error[E0277]: expected a `FnOnce<(String,)>` closure, found `for<'a> unsafe fn(&'a str) -> Option<()> {takes_str_but_unsafe}` + --> $DIR/suggest-option-asderef-unfixable.rs:28:40 + | +LL | let _ = produces_string().and_then(takes_str_but_unsafe); + | -------- ^^^^^^^^^^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }` + | | + | required by a bound introduced by this call + | + = help: the trait `FnOnce<(String,)>` is not implemented for fn item `for<'a> unsafe fn(&'a str) -> Option<()> {takes_str_but_unsafe}` + = note: unsafe function cannot be called generically without an unsafe block +note: required by a bound in `Option::<T>::and_then` + --> $SRC_DIR/core/src/option.rs:LL:COL + +error[E0593]: function is expected to take 1 argument, but it takes 0 arguments + --> $DIR/suggest-option-asderef-unfixable.rs:30:40 + | +LL | fn no_args() -> Option<()> { + | -------------------------- takes 0 arguments +... +LL | let _ = produces_string().and_then(no_args); + | -------- ^^^^^^^ expected function that takes 1 argument + | | + | required by a bound introduced by this call + | +note: required by a bound in `Option::<T>::and_then` + --> $SRC_DIR/core/src/option.rs:LL:COL + +error[E0631]: type mismatch in function arguments + --> $DIR/suggest-option-asderef-unfixable.rs:32:45 + | +LL | fn takes_str_but_too_many_refs(_: &&str) -> Option<()> { + | ------------------------------------------------------ found signature defined here +... +LL | let _ = Some(TypeWithoutDeref).and_then(takes_str_but_too_many_refs); + | -------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected due to this + | | + | required by a bound introduced by this call + | + = note: expected function signature `fn(TypeWithoutDeref) -> _` + found function signature `for<'a, 'b> fn(&'a &'b str) -> _` +note: required by a bound in `Option::<T>::and_then` + --> $SRC_DIR/core/src/option.rs:LL:COL + +error: aborting due to 5 previous errors + +Some errors have detailed explanations: E0277, E0593, E0631. +For more information about an error, try `rustc --explain E0277`. |