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increase stack slack for x86_64-pc-windows-gnu

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This commit is contained in:
Ralf Jung 2020-03-18 13:35:46 +01:00
parent 139a8c34bc
commit c95f08affa
1 changed files with 4 additions and 3 deletions
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7
src/test/ui/issues/issue-40883.rs
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@ -71,15 +71,16 @@ pub fn supersize_me(out: &mut Vec<Big>) {
#[inline(never)]
fn verify_stack_usage(before_ptr: *mut Vec<Big>) {
// to check stack usage, create locals before and after
// To check stack usage, create locals before and after
// and check the difference in addresses between them.
let mut stack_var: Vec<Big> = vec![];
test::black_box(&mut stack_var);
let stack_usage = isize::abs(
(&mut stack_var as *mut _ as isize) -
(before_ptr as isize)) as usize;
// give space for 2 copies of `Big` + 256 "misc" bytes.
if stack_usage > mem::size_of::<Big>() * 2 + 256 {
// Give space for 2 copies of `Big` + 272 "misc" bytes
// (value observed on x86_64-pc-windows-gnu).
if stack_usage > mem::size_of::<Big>() * 2 + 272 {
panic!("used {} bytes of stack, but `struct Big` is only {} bytes",
stack_usage, mem::size_of::<Big>());
}