pretty printer ICE on large const-expr summation

[pnkfelix]

(imported from improperly closed bug #17406)

This code:

static I104: int =
    0 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1
        + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 +
        1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1
        + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 +
        1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1
        + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1;

fn main() {
}

when I hit the "format" button in the playpen (which I assume just calls rustc -Z unstable-options --pretty), it ICEs.

[pnkfelix]

(the new playpen doesn't have a format button anymore ...)

[pnkfelix]

Here is a way to emulate the problem in the playpen nonetheless (by creating the file in question and manually invoking rustc's pretty-printer to expose the ICE): http://is.gd/OF0lBs

[pmarcelll]

Triage: I can't reproduce it.

[Mark-Simulacrum]

Cannot reproduce -- closing.