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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/issues/issue-16739.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/issues/issue-16739.rs')
-rw-r--r-- | tests/ui/issues/issue-16739.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/issues/issue-16739.rs b/tests/ui/issues/issue-16739.rs new file mode 100644 index 000000000..b21ea4bcd --- /dev/null +++ b/tests/ui/issues/issue-16739.rs @@ -0,0 +1,45 @@ +// run-pass +#![feature(unboxed_closures, fn_traits)] + +// Test that unboxing shim for calling rust-call ABI methods through a +// trait box works and does not cause an ICE. + +struct Foo { foo: u32 } + +impl FnMut<()> for Foo { + extern "rust-call" fn call_mut(&mut self, _: ()) -> u32 { self.foo } +} + +impl FnOnce<()> for Foo { + type Output = u32; + extern "rust-call" fn call_once(mut self, _: ()) -> u32 { self.call_mut(()) } +} + +impl FnMut<(u32,)> for Foo { + extern "rust-call" fn call_mut(&mut self, (x,): (u32,)) -> u32 { self.foo + x } +} + +impl FnOnce<(u32,)> for Foo { + type Output = u32; + extern "rust-call" fn call_once(mut self, args: (u32,)) -> u32 { self.call_mut(args) } +} + +impl FnMut<(u32,u32)> for Foo { + extern "rust-call" fn call_mut(&mut self, (x, y): (u32, u32)) -> u32 { self.foo + x + y } +} + +impl FnOnce<(u32,u32)> for Foo { + type Output = u32; + extern "rust-call" fn call_once(mut self, args: (u32,u32)) -> u32 { self.call_mut(args) } +} + +fn main() { + let mut f = Box::new(Foo { foo: 42 }) as Box<dyn FnMut() -> u32>; + assert_eq!(f.call_mut(()), 42); + + let mut f = Box::new(Foo { foo: 40 }) as Box<dyn FnMut(u32) -> u32>; + assert_eq!(f.call_mut((2,)), 42); + + let mut f = Box::new(Foo { foo: 40 }) as Box<dyn FnMut(u32, u32) -> u32>; + assert_eq!(f.call_mut((1, 1)), 42); +} |