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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:03 +0000 |
commit | 64d98f8ee037282c35007b64c2649055c56af1db (patch) | |
tree | 5492bcf97fce41ee1c0b1cc2add283f3e66cdab0 /tests/ui/packed-struct/packed-struct-transmute.rs | |
parent | Adding debian version 1.67.1+dfsg1-1. (diff) | |
download | rustc-64d98f8ee037282c35007b64c2649055c56af1db.tar.xz rustc-64d98f8ee037282c35007b64c2649055c56af1db.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/packed-struct/packed-struct-transmute.rs')
-rw-r--r-- | tests/ui/packed-struct/packed-struct-transmute.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/packed-struct/packed-struct-transmute.rs b/tests/ui/packed-struct/packed-struct-transmute.rs new file mode 100644 index 000000000..a7d284025 --- /dev/null +++ b/tests/ui/packed-struct/packed-struct-transmute.rs @@ -0,0 +1,29 @@ +// This assumes the packed and non-packed structs are different sizes. + +// the error points to the start of the file, not the line with the +// transmute + +// normalize-stderr-test "\d+ bits" -> "N bits" +// error-pattern: cannot transmute between types of different sizes, or dependently-sized types + +use std::mem; + +#[repr(packed)] +struct Foo { + bar: u8, + baz: usize +} + +#[derive(Debug)] +struct Oof { + rab: u8, + zab: usize +} + +fn main() { + let foo = Foo { bar: 1, baz: 10 }; + unsafe { + let oof: Oof = mem::transmute(foo); + println!("{:?}", oof); + } +} |