bors 468227129d Auto merge of #38066 - bluss:string-slice-error, r=sfackler ...

Use more specific panic message for &str slicing errors

Separate out of bounds errors from character boundary errors, and print
more details for character boundary errors.

It reports the first error it finds in:

1. begin out of bounds
2. end out of bounds
3. begin <= end violated
3. begin not char boundary
5. end not char boundary.

Example:

    &"abcαβγ"[..4]

    thread 'str::test_slice_fail_boundary_1' panicked at 'byte index 4 is not
    a char boundary; it is inside 'α' (bytes 3..5) of `abcαβγ`'

Fixes #38052

2017-01-03 23:51:42 +00:00

..

mod.rs

Auto merge of #38066 - bluss:string-slice-error, r=sfackler

2017-01-03 23:51:42 +00:00

pattern.rs

Use #[prelude_import] in libcore.

2016-08-24 22:12:23 +00:00