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/codegen/issue-28950.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 src/test/ui/codegen/issue-28950.rs (limited to 'src/test/ui/codegen/issue-28950.rs') diff --git a/src/test/ui/codegen/issue-28950.rs b/src/test/ui/codegen/issue-28950.rs new file mode 100644 index 000000000..8b55f42f3 --- /dev/null +++ b/src/test/ui/codegen/issue-28950.rs @@ -0,0 +1,22 @@ +// run-pass +// ignore-emscripten no threads +// compile-flags: -O + +// Tests that the `vec!` macro does not overflow the stack when it is +// given data larger than the stack. + +// FIXME(eddyb) Improve unoptimized codegen to avoid the temporary, +// and thus run successfully even when compiled at -C opt-level=0. + +const LEN: usize = 1 << 15; + +use std::thread::Builder; + +fn main() { + assert!(Builder::new().stack_size(LEN / 2).spawn(|| { + // FIXME(eddyb) this can be vec![[0: LEN]] pending + // https://llvm.org/bugs/show_bug.cgi?id=28987 + let vec = vec![unsafe { std::mem::zeroed::<[u8; LEN]>() }]; + assert_eq!(vec.len(), 1); + }).unwrap().join().is_ok()); +} -- cgit v1.2.3