error: unresolved name: core::error

[jesse99]

One of my rust libraries is failing to build with rust 0.4 for most of the modules that call error!, info!, etc with errors like the one above. The modules that fail do glob imports of an external rust library.

I wasn't able to get a repro with a one rs file app, but I did get a repro with a multi-file app (and multi-file library). I'll clean up the repro a bit and attach it after I get back from work.

This is a rather serious error because it's something that people will do and there's no indication of what the problem is.

[jesse99]

Can't seem to attach a file to a ticket so I'll attach the files below. To repro the compiler error just run make with no arguments. Might be able to condense this a bit more (e.g. by removing validation.rs).

---- ./Makefile --------
all: xml-client

.PHONY : xml-client
xml-client:
    cd sxml && rustc sxml.rc
    cd xml-client && rustc -L ../sxml --test client.rc && ./client

---- sxml/parsing.rs --------
use result::{Result, Err};

pub fn parse_str(_text: &str) -> Result<Xml, @~str>
{
    Err(@~"not implemented")
}

---- sxml/sxml.rc --------
#[link(name = "sxml", vers = "1.0", uuid = "333BE970-5A76-40CD-A101-3DD27CB469E5")];
#[crate_type = "lib"];

extern mod std;

pub mod parsing;
pub mod validation;

---- sxml/sxml.rs --------
use result::{Err, Ok, Result};
use std::map::{HashMap};

pub use parsing::{parse_str};
pub use validation::{validate_xml};

pub type Attributes = HashMap<@~str, @~str>;

pub enum Xml
{
    Content(@~str),
    Element(@~str, Attributes, @[@Xml]),
}

pub fn from_str(text: &str) -> Result<Xml, @~str>
{
    do parse_str(text).chain |xml|
    {
        match validate_xml(&xml)
        {
            @~""   => Ok(xml),
            errors => Err(errors),
        }
    }
}

---- sxml/validation.rs --------
pub fn validate_xml(_xml: &Xml) -> @~str
{
    @~""
}

---- xml-client/client.rc --------
#[link(name = "client", vers = "0.2", uuid = "D71AEFEB-650C-46E5-91C3-36E9406AEE8E")];

extern mod std;
extern mod sxml (name = "sxml", vers = "1.0");

mod client;

---- xml-client/client.rs --------
use sxml::*;                // compiler error with this present (see below)

//use sxml::{from_str};     // unit test compiles and runs with this instead
//use sxml::parsing;

use result::{Err, Ok, Result};

#[test]
fn test_inner_modules()
{
    info!("hmm");
    match parsing::parse_str("<hmm/>")
    {
        Ok(*) => assert false,
        Err(mesg) => assert *mesg == ~"not implemented",
    }
}

// With `use sxml::*;` get:
//<core-macros>:5:31: 5:41 error: unresolved name: core::info
//<core-macros>:5     #macro[[#info[f, ...], log(core::info, #fmt[f, ...])]];
//                                               ^~~~~~~~~~
//<core-macros>:5:10: 5:59 note: in expansion of #info
//client.rs:11:4: 11:17 note: expansion site
//error: aborting due to previous error