mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Prevent overflows by increasing ring buffer size

Browse Source 
Please note that this change is just done to prevent
issues as currently seen by syntex_syntax in future.
See https://github.com/serde-rs/syntex/pull/47 for details.

As shown in https://github.com/serde-rs/syntex/issues/33,
complex code can easily overflow the ring-buffer and
cause an assertion error.
This commit is contained in:
Sebastian Thiel 2016-05-28 17:29:59 +02:00
parent 3c795e08d6
commit 406378b6bb
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/libsyntax/print/pp.rs
View File

@ -159,9 +159,9 @@ pub struct PrintStackElem {
const SIZE_INFINITY: isize = 0xffff;
pub fn mk_printer<'a>(out: Box<io::Write+'a>, linewidth: usize) -> Printer<'a> {
// Yes 3, it makes the ring buffers big enough to never
// Yes 55, it makes the ring buffers big enough to never
// fall behind.
let n: usize = 3 * linewidth;
let n: usize = 55 * linewidth;
debug!("mk_printer {}", linewidth);
let token = vec![Token::Eof; n];
let size = vec![0; n];