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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/run-make-fulldeps/extern-fn-with-union/test.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/run-make-fulldeps/extern-fn-with-union/test.rs')
-rw-r--r-- | src/test/run-make-fulldeps/extern-fn-with-union/test.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/run-make-fulldeps/extern-fn-with-union/test.rs b/src/test/run-make-fulldeps/extern-fn-with-union/test.rs new file mode 100644 index 000000000..438fbddf3 --- /dev/null +++ b/src/test/run-make-fulldeps/extern-fn-with-union/test.rs @@ -0,0 +1,19 @@ +extern crate testcrate; + +use std::mem; + +extern "C" { + fn give_back(tu: testcrate::TestUnion) -> u64; +} + +fn main() { + let magic: u64 = 0xDEADBEEF; + + // Let's test calling it cross crate + let back = unsafe { testcrate::give_back(mem::transmute(magic)) }; + assert_eq!(magic, back); + + // And just within this crate + let back = unsafe { give_back(mem::transmute(magic)) }; + assert_eq!(magic, back); +} |