Using #[phase(syntax)] on use instead of mod crashes the compiler

[uzytkownik]

(gdb) bt
#0  0x00007ffff7727630 in rust_fail ()
   from /usr/bin/../lib/libstd-966edb7e-0.10-pre.so
#1  0x00007ffff75cbd39 in rt::unwind::Unwinder::begin_unwind::h3b1cb9a3eb8d991bXOaD::v0.10.pre () from /usr/bin/../lib/libstd-966edb7e-0.10-pre.so
#2  0x00007ffff2dd6aa8 in rt::unwind::begin_unwind::hd9a1d253d4a33d5aaQ::v0.10.pre () from /usr/bin/../lib/librustc-0d83f02f-0.10-pre.so
#3  0x00007ffff3976efb in option::Option::unwrap::h144931b46c7e68dblhaV::v0.10.pre () from /usr/bin/../lib/librustc-0d83f02f-0.10-pre.so
#4  0x00007ffff3869351 in metadata::creader::CrateLoader$Loader::load_crate::he9aa556ffd45c033OYae::v0.10.pre ()
   from /usr/bin/../lib/librustc-0d83f02f-0.10-pre.so
#5  0x00007ffff62db6ab in ext::expand::load_extern_macros::h9b911bdebace7cc7aw::v0.10.pre () from /usr/bin/../lib/libsyntax-ebc61d75-0.10-pre.so
#6  0x00007ffff62db384 in ext::expand::expand_view_item::hf01392e46aef41d3an::v0.10.pre () from /usr/bin/../lib/libsyntax-ebc61d75-0.10-pre.so
#7  0x00007ffff62c9434 in ext::expand::Folder$MacroExpander::fold_view_item::hc549b12bf2909253TxaX::v0.10.pre ()
   from /usr/bin/../lib/libsyntax-ebc61d75-0.10-pre.so
#8  0x00007ffff62c93c8 in fold::noop_fold_mod::anon::expr_fn::aVaW ()
   from /usr/bin/../lib/libsyntax-ebc61d75-0.10-pre.so
#9  0x00007ffff62c98d6 in iter::Map::do_map::hcd7f6781e31a9c951za2::v0.10.pre
    () from /usr/bin/../lib/libsyntax-ebc61d75-0.10-pre.so
#10 0x00007ffff62c9818 in iter::Iterator$Map::next::h9083bbf0fab46094r6a1::v0.10

[alexcrichton]

Thanks for the report! Do you have some example code that triggers this as well? It's helpful to have the exact code with the exact command line parameters in order to help us duplicating these.

cc @sfackler

[sfackler]

Oops! I thought I had a check in there somewhere for that. Should be an easy fix.

[uzytkownik]

@alexcrichton: I'd have to check it but it was really simple. Something it wasn't more complicated then:

extern mod test;

#[phase(syntax)]
use test;

pub fn main() {}