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fix various const eval errors #33339

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Merged
merged 5 commits into from
May 5, 2016
Merged

fix various const eval errors #33339

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12c4a19
remove unused constant error variants
oli-obk May 2, 2016
bf51eaf
check for wrong const_err warnings
oli-obk May 2, 2016
10737a5
`* as char` assumes `*` to be of type `u8`
oli-obk May 2, 2016
f080b13
tests
oli-obk May 2, 2016
ce6ea47
refactor infer function
oli-obk May 2, 2016
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18 changes: 11 additions & 7 deletions src/test/compile-fail/const-eval-overflow-4b.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,6 @@

#![allow(unused_imports)]

use std::fmt;
use std::{i8, i16, i32, i64, isize};
use std::{u8, u16, u32, u64, usize};

Expand All @@ -26,10 +25,15 @@ const A_I8_T
//~| found `u8` [E0250]
= [0; (i8::MAX as usize) + 1];

fn main() {
foo(&A_I8_T[..]);
}

fn foo<T:fmt::Debug>(x: T) {
println!("{:?}", x);
}
const A_CHAR_USIZE
: [u32; 5u8 as char as usize]
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Yay, more const casting possibilities.

= [0; 5];


const A_BAD_CHAR_USIZE
: [u32; 5i8 as char as usize]
//~^ ERROR only `u8` can be cast as `char`, not `i8`
= [0; 5];

fn main() {}
2 changes: 1 addition & 1 deletion src/test/run-pass/const-err.rs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
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