From 631cd5845e8de329d0e227aaa707d7ea228b8f8f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:20:29 +0200 Subject: Merging upstream version 1.70.0+dfsg1. Signed-off-by: Daniel Baumann --- tests/run-make/extern-fn-with-union/test.rs | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 tests/run-make/extern-fn-with-union/test.rs (limited to 'tests/run-make/extern-fn-with-union/test.rs') 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); +} -- cgit v1.2.3