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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/transmute/transmute-impl.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/transmute/transmute-impl.rs')
-rw-r--r-- | src/test/ui/transmute/transmute-impl.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/transmute/transmute-impl.rs b/src/test/ui/transmute/transmute-impl.rs new file mode 100644 index 000000000..df422bda1 --- /dev/null +++ b/src/test/ui/transmute/transmute-impl.rs @@ -0,0 +1,25 @@ +// normalize-stderr-test "\d+ bits" -> "N bits" + +// Tests that are conservative around thin/fat pointer mismatches. + +#![allow(dead_code)] + +use std::mem::transmute; + +struct Foo<T: ?Sized> { + t: Box<T> +} + +impl<T: ?Sized> Foo<T> { + fn m(x: &T) -> &isize where T : Sized { + // OK here, because T : Sized is in scope. + unsafe { transmute(x) } + } + + fn n(x: &T) -> &isize { + // Not OK here, because T : Sized is not in scope. + unsafe { transmute(x) } //~ ERROR cannot transmute between types of different sizes + } +} + +fn main() { } |