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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/consts/issue-79690.rs
parentInitial commit. (diff)
downloadrustc-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/consts/issue-79690.rs')
-rw-r--r--src/test/ui/consts/issue-79690.rs33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/consts/issue-79690.rs b/src/test/ui/consts/issue-79690.rs
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index 000000000..56747bf5a
--- /dev/null
+++ b/src/test/ui/consts/issue-79690.rs
@@ -0,0 +1,33 @@
+// ignore-32bit
+// This test gives a different error on 32-bit architectures.
+// stderr-per-bitwidth
+
+union Transmute<T: Copy, U: Copy> {
+ t: T,
+ u: U,
+}
+trait Bar {
+ fn bar(&self) -> u32;
+}
+struct Foo {
+ foo: u32,
+ bar: bool,
+}
+impl Bar for Foo {
+ fn bar(&self) -> u32 {
+ self.foo
+ }
+}
+#[derive(Copy, Clone)]
+struct Fat<'a>(&'a Foo, &'static VTable);
+struct VTable {
+ size: Foo,
+}
+const FOO: &dyn Bar = &Foo {
+ foo: 128,
+ bar: false,
+};
+const G: Fat = unsafe { Transmute { t: FOO }.u };
+//~^ ERROR it is undefined behavior to use this value
+
+fn main() {}