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/packed/packed-tuple-struct-layout.rs | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 src/test/ui/packed/packed-tuple-struct-layout.rs (limited to 'src/test/ui/packed/packed-tuple-struct-layout.rs') diff --git a/src/test/ui/packed/packed-tuple-struct-layout.rs b/src/test/ui/packed/packed-tuple-struct-layout.rs new file mode 100644 index 000000000..931be5b94 --- /dev/null +++ b/src/test/ui/packed/packed-tuple-struct-layout.rs @@ -0,0 +1,23 @@ +// run-pass +use std::mem; + +#[repr(packed)] +#[allow(unused_tuple_struct_fields)] +struct S4(u8,[u8; 3]); + +#[repr(packed)] +#[allow(unused_tuple_struct_fields)] +struct S5(u8,u32); + +pub fn main() { + unsafe { + let s4 = S4(1, [2,3,4]); + let transd : [u8; 4] = mem::transmute(s4); + assert_eq!(transd, [1, 2, 3, 4]); + + let s5 = S5(1, 0xff_00_00_ff); + let transd : [u8; 5] = mem::transmute(s5); + // Don't worry about endianness, the u32 is palindromic. + assert_eq!(transd, [1, 0xff, 0, 0, 0xff]); + } +} -- cgit v1.2.3