From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- tests/ui/generator/resume-arg-size.rs | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 tests/ui/generator/resume-arg-size.rs (limited to 'tests/ui/generator/resume-arg-size.rs') diff --git a/tests/ui/generator/resume-arg-size.rs b/tests/ui/generator/resume-arg-size.rs new file mode 100644 index 000000000..b93dc54f7 --- /dev/null +++ b/tests/ui/generator/resume-arg-size.rs @@ -0,0 +1,28 @@ +#![feature(generators)] + +// run-pass + +use std::mem::size_of_val; + +fn main() { + // Generator taking a `Copy`able resume arg. + let gen_copy = |mut x: usize| { + loop { + drop(x); + x = yield; + } + }; + + // Generator taking a non-`Copy` resume arg. + let gen_move = |mut x: Box| { + loop { + drop(x); + x = yield; + } + }; + + // Neither of these generators have the resume arg live across the `yield`, so they should be + // 1 Byte in size (only storing the discriminant) + assert_eq!(size_of_val(&gen_copy), 1); + assert_eq!(size_of_val(&gen_move), 1); +} -- cgit v1.2.3