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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/transmute/transmute-fat-pointers.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/transmute/transmute-fat-pointers.rs')
-rw-r--r-- | tests/ui/transmute/transmute-fat-pointers.rs | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/transmute/transmute-fat-pointers.rs b/tests/ui/transmute/transmute-fat-pointers.rs new file mode 100644 index 000000000..7c1beffd1 --- /dev/null +++ b/tests/ui/transmute/transmute-fat-pointers.rs @@ -0,0 +1,33 @@ +// normalize-stderr-test "\d+ bits" -> "N bits" + +// Tests that are conservative around thin/fat pointer mismatches. + +#![allow(dead_code)] + +use std::mem::transmute; + +fn a<T, U: ?Sized>(x: &[T]) -> &U { + unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes +} + +fn b<T: ?Sized, U: ?Sized>(x: &T) -> &U { + unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes +} + +fn c<T, U>(x: &T) -> &U { + unsafe { transmute(x) } +} + +fn d<T, U>(x: &[T]) -> &[U] { + unsafe { transmute(x) } +} + +fn e<T: ?Sized, U>(x: &T) -> &U { + unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes +} + +fn f<T, U: ?Sized>(x: &T) -> &U { + unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes +} + +fn main() { } |