PartialOrd derving broken for slices

[emberian]

#[deriving(PartialEq, PartialOrd)]
pub struct Version {
    pub vender_info: &'static str
}

fn main(){}

> rustc foo.rs
foo.rs:3:9: 3:34 error: mismatched types: expected `&str`, found `&&'static str` (expected str, found &-ptr)
foo.rs:3     pub vender_info: &'static str
                 ^~~~~~~~~~~~~~~~~~~~~~~~~
note: in expansion of #[deriving]
foo.rs:1:1: 1:35 note: expansion site
error: aborting due to previous error

Removing the PartialOrd deriving fixes it.

[emberian]

Offending code:

 #[inline]
 fn partial_cmp(&self, __arg_0: &Version) ->
  ::std::option::Option<::std::cmp::Ordering> {
     match *__arg_0 {
         Version { vender_info: ref __self_1_0 } =>
         match *self {
             Version { vender_info: ref __self_0_0 } => {
                 let __test = (*__self_0_0).partial_cmp(&(*__self_1_0));
                 if __test == ::std::option::Some(::std::cmp::Equal) {
                     ::std::option::Some(::std::cmp::Equal)
                 } else { __test }
             }
         },
     }
 }

bar.rs:21:60: 21:74 error: mismatched types: expected `&str`, found `&&'static str` (expected str, found &-ptr)
bar.rs:21                     let __test = (*__self_0_0).partial_cmp(&(*__self_1_0));
                                                                     ^~~~~~~~~~~~~~
error: aborting due to previous error

[japaric]

@cmr See #15689 (comment) I'll probably send a fix later today.

[brendanzab]

This still seems broken:

#[deriving(Eq, PartialEq, Ord, PartialOrd)]
struct Foo(&'static str);

<anon>:2:12: 2:25 error: mismatched types: expected `&str`, found `&&'static str` (expected str, found &-ptr)
<anon>:2 struct Foo(&'static str);
                    ^~~~~~~~~~~~~
note: in expansion of #[deriving]
<anon>:1:1: 1:44 note: expansion site

http://is.gd/4GFt9D

[japaric]

@bjz Hmm, deriving(Ord) is the one that's still broken now. This issue was about PartialOrd which is still working (it has a run-pass test). Anyways, I'll send a patch later.

[brendanzab]

Cheers!