From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/abi/union/union-c-interop.rs | 37 ++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 src/test/ui/abi/union/union-c-interop.rs (limited to 'src/test/ui/abi/union/union-c-interop.rs') diff --git a/src/test/ui/abi/union/union-c-interop.rs b/src/test/ui/abi/union/union-c-interop.rs new file mode 100644 index 000000000..00f04d5b7 --- /dev/null +++ b/src/test/ui/abi/union/union-c-interop.rs @@ -0,0 +1,37 @@ +// run-pass +#![allow(non_snake_case)] + +// ignore-wasm32-bare no libc to test ffi with + +#[derive(Clone, Copy)] +#[repr(C)] +struct LARGE_INTEGER_U { + LowPart: u32, + HighPart: u32, +} + +#[derive(Clone, Copy)] +#[repr(C)] +union LARGE_INTEGER { + __unnamed__: LARGE_INTEGER_U, + u: LARGE_INTEGER_U, + QuadPart: u64, +} + +#[link(name = "rust_test_helpers", kind = "static")] +extern "C" { + fn increment_all_parts(_: LARGE_INTEGER) -> LARGE_INTEGER; +} + +fn main() { + unsafe { + let mut li = LARGE_INTEGER { QuadPart: 0 }; + let li_c = increment_all_parts(li); + li.__unnamed__.LowPart += 1; + li.__unnamed__.HighPart += 1; + li.u.LowPart += 1; + li.u.HighPart += 1; + li.QuadPart += 1; + assert_eq!(li.QuadPart, li_c.QuadPart); + } +} -- cgit v1.2.3