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Rewrite the FPE test to not use Context directly

This commit is contained in:
edef 2016-08-09 15:59:35 +02:00
parent 890e95b8a4
commit 375846bda5
1 changed files with 7 additions and 19 deletions
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26
tests/fpe.rs
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@ -8,12 +8,9 @@
#![feature(asm)]
extern crate fringe;
extern crate test;
use fringe::Context;
use fringe::{OsStack, Generator};
use test::black_box;
#[thread_local]
static mut ctx_slot: *mut Context<fringe::OsStack> = 0 as *mut Context<_>;
const FE_DIVBYZERO: i32 = 0x4;
extern {
fn feenableexcept(except: i32) -> i32;
@ -22,20 +19,11 @@ extern {
#[test]
#[ignore]
fn fpe() {
unsafe extern "C" fn universe_destroyer(_arg: usize) -> ! {
loop {
println!("{:?}", 1.0/black_box(0.0));
Context::swap(ctx_slot, ctx_slot, 0);
}
}
let stack = OsStack::new(0).unwrap();
let mut gen = Generator::new(stack, move |yielder| {
yielder.generate(1.0 / black_box(0.0));
});
unsafe {
let stack = fringe::OsStack::new(4 << 20).unwrap();
let mut ctx = Context::new(stack, universe_destroyer);
ctx_slot = &mut ctx;
Context::swap(ctx_slot, ctx_slot, 0);
feenableexcept(FE_DIVBYZERO);
Context::swap(ctx_slot, ctx_slot, 0);
}
unsafe { feenableexcept(FE_DIVBYZERO); }
println!("{:?}", gen.next());
}