1.19.0 and nightly ICE: panicked at 'index out of bounds: the len is 0 but the index is 0', /checkout/src/librustc_metadata/creader.rs:1217:17

[zhendongsu]

$ rustc-nightly --version
rustc 1.21.0-nightly (f25c2283b 2017-08-15)
$ 
$ rustc-nightly tmp.rs
error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.21.0-nightly (f25c2283b 2017-08-15) running on i686-unknown-linux-gnu

thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 0', /checkout/src/librustc_metadata/creader.rs:1217:17
note: Run with `RUST_BACKTRACE=1` for a backtrace.

$ 
$ cat tmp.rs
#[link(name="foo", cfg())] 
extern {}
$ 

[arielb1]

Quasi-duplicate of #42925.

[topecongiro]

#42925 -> #43925.