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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:39 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:20:39 +0000 |
commit | 1376c5a617be5c25655d0d7cb63e3beaa5a6e026 (patch) | |
tree | 3bb8d61aee02bc7a15eab3f36e3b921afc2075d0 /tests/run-make/extern-fn-with-union/test.rs | |
parent | Releasing progress-linux version 1.69.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.tar.xz rustc-1376c5a617be5c25655d0d7cb63e3beaa5a6e026.zip |
Merging upstream version 1.70.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/run-make/extern-fn-with-union/test.rs')
-rw-r--r-- | tests/run-make/extern-fn-with-union/test.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/run-make/extern-fn-with-union/test.rs b/tests/run-make/extern-fn-with-union/test.rs new file mode 100644 index 000000000..438fbddf3 --- /dev/null +++ b/tests/run-make/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); +} |