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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/lifetimes/bare-trait-object.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/lifetimes/bare-trait-object.rs')
-rw-r--r-- | tests/ui/lifetimes/bare-trait-object.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/lifetimes/bare-trait-object.rs b/tests/ui/lifetimes/bare-trait-object.rs new file mode 100644 index 000000000..9eff618c7 --- /dev/null +++ b/tests/ui/lifetimes/bare-trait-object.rs @@ -0,0 +1,25 @@ +// Verify that lifetime resolution correctly accounts for `Fn` bare trait objects. +// check-pass +#![allow(bare_trait_objects)] + +// This should work as: fn next_u32(fill_buf: &mut dyn FnMut(&mut [u8])) +fn next_u32(fill_buf: &mut FnMut(&mut [u8])) { + let mut buf: [u8; 4] = [0; 4]; + fill_buf(&mut buf); +} + +fn explicit(fill_buf: &mut dyn FnMut(&mut [u8])) { + let mut buf: [u8; 4] = [0; 4]; + fill_buf(&mut buf); +} + +fn main() { + let _: fn(&mut FnMut(&mut [u8])) = next_u32; + let _: &dyn Fn(&mut FnMut(&mut [u8])) = &next_u32; + let _: fn(&mut FnMut(&mut [u8])) = explicit; + let _: &dyn Fn(&mut FnMut(&mut [u8])) = &explicit; + let _: fn(&mut dyn FnMut(&mut [u8])) = next_u32; + let _: &dyn Fn(&mut dyn FnMut(&mut [u8])) = &next_u32; + let _: fn(&mut dyn FnMut(&mut [u8])) = explicit; + let _: &dyn Fn(&mut dyn FnMut(&mut [u8])) = &explicit; +} |