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c98ea0d808
Print a backtrace in const eval if interrupted
Demo:
```rust
#![feature(const_eval_limit)]
#![const_eval_limit = "0"]
const OW: u64 = {
let mut res: u64 = 0;
let mut i = 0;
while i < u64::MAX {
res = res.wrapping_add(i);
i += 1;
}
res
};
fn main() {
println!("{}", OW);
}
```
```
╭ ➜ ben@archlinux:~/rust
╰ ➤ rustc +stage1 spin.rs
^Cerror[E0080]: evaluation of constant value failed
--> spin.rs:8:33
|
8 | res = res.wrapping_add(i);
| ^ Compilation was interrupted
note: erroneous constant used
--> spin.rs:15:20
|
15 | println!("{}", OW);
| ^^
note: erroneous constant used
--> spin.rs:15:20
|
15 | println!("{}", OW);
| ^^
|
= note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to previous error
For more information about this error, try `rustc --explain E0080`.
```
|
||
|---|---|---|
| .. | ||
| interpret | ||
| basic_blocks.rs | ||
| consts.rs | ||
| coverage.rs | ||
| generic_graph.rs | ||
| generic_graphviz.rs | ||
| graphviz.rs | ||
| mod.rs | ||
| mono.rs | ||
| patch.rs | ||
| pretty.rs | ||
| query.rs | ||
| statement.rs | ||
| syntax.rs | ||
| tcx.rs | ||
| terminator.rs | ||
| traversal.rs | ||
| type_foldable.rs | ||
| visit.rs | ||