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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs')
-rw-r--r-- | src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs b/src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs new file mode 100644 index 000000000..02e8b7b47 --- /dev/null +++ b/src/test/ui/unboxed-closures/unboxed-closures-wrong-arg-type-extern-fn.rs @@ -0,0 +1,35 @@ +// Tests that unsafe extern fn pointers do not implement any Fn traits. + +use std::ops::{Fn, FnMut, FnOnce}; + +unsafe fn square(x: isize) -> isize { + x * x +} +// note: argument type here is `isize`, not `&isize` + +fn call_it<F: Fn(&isize) -> isize>(_: &F, _: isize) -> isize { + 0 +} +fn call_it_mut<F: FnMut(&isize) -> isize>(_: &mut F, _: isize) -> isize { + 0 +} +fn call_it_once<F: FnOnce(&isize) -> isize>(_: F, _: isize) -> isize { + 0 +} + +fn a() { + let x = call_it(&square, 22); + //~^ ERROR E0277 +} + +fn b() { + let y = call_it_mut(&mut square, 22); + //~^ ERROR E0277 +} + +fn c() { + let z = call_it_once(square, 22); + //~^ ERROR E0277 +} + +fn main() {} |