Crash on Win7 x86_64

[kiljacken]

Racer crashes using the latest x86_64 nightly.

Version info:
$ rustc --version
rustc 0.13.0-nightly (e09d98603 2014-11-18 23:51:43 +0000)

The (quite vague) crash output:
$ racer complete std::io::

task '<main>' has overflowed its stack

It should be noted that code doesn't compile on this nightly due to rust-lang/rust#18645

[ebfe]

Same on linux.

Backtrace:

task '

' has overflowed its stack

Program received signal SIGILL, Illegal instruction.
0x00007ffff6773fbe in rust_stack_exhausted () from /usr/lib/librustrt-4e7c5e5c.so
(gdb) bt
#0  0x00007ffff6773fbe in rust_stack_exhausted () from /usr/lib/librustrt-4e7c5e5c.so
#1  0x00007ffff6db3de9 in ?? () from /usr/lib/libstd-4e7c5e5c.so
#2  0x00007ffff67c2684 in fmt::Formatter$LT$$x27a$GT$::pad::h0e8123d27493eac9jGA () from /usr/lib/librustrt-4e7c5e5c.so
#3  0x00007ffff67b9d3a in fmt::str.Show::fmt::h8c937b0cffc32057oYA () from /usr/lib/librustrt-4e7c5e5c.so
#4  0x000055555556527d in fmt::_$BP$$x27a$x20T.Show::fmt::h17958754004638651362 ()
#5  0x00007ffff67c1dd2 in fmt::write::h63b31407722e79700vA () from /usr/lib/librustrt-4e7c5e5c.so
#6  0x00007ffff67c1c0b in fmt::Arguments$LT$$x27a$GT$.Show::fmt::h782249ace03efb68gsA () from /usr/lib/librustrt-4e7c5e5c.so
#7  0x00007ffff67c1dd2 in fmt::write::h63b31407722e79700vA () from /usr/lib/librustrt-4e7c5e5c.so
#8  0x00007ffff6d4c688 in fmt::format::h74df8dde596998cfgdp () from /usr/lib/libstd-4e7c5e5c.so
#9  0x00005555556ea9e5 in racer::racer::matchers::match_extern_crate (msrc=..., blobstart=6802, blobend=6818, searchstr=..., filepath=0x7ffff4837c80, search_type=ExactMatch) at src/racer/matchers.rs:3
#10 0x00005555556d5e89 in racer::racer::matchers::match_types (src=..., blobstart=6802, blobend=6818, searchstr=..., filepath=0x7ffff4837c80, search_type=ExactMatch, local=true) at src/racer/matchers.rs:25
#11 0x00005555556d20c9 in racer::racer::nameres::search_scope (point=0, src=..., pathseg=0x7ffff4837ca8, filepath=0x7ffff4837c80, search_type=ExactMatch, local=true, namespace=TypeNamespace)
    at src/racer/nameres.rs:487
#12 0x00005555556d8c79 in racer::racer::nameres::search_local_scopes (pathseg=0x7ffff4837ca8, filepath=0x7ffff4837c80, msrc=..., point=0, search_type=ExactMatch, namespace=TypeNamespace)
    at src/racer/nameres.rs:537
#13 0x00005555556dcf7b in fn"fn"(16552) () at src/racer/nameres.rs:713
#14 0x00005555556dce5d in fn"fn"(16539) (p={struct MoveItems<racer::racer::Match> (void)} 0x7fffffe0daa0) at src/racer/util.rs:175
#15 0x00005555556dfe05 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::closure.16666 ()
#16 0x00005555556df987 in option::Option$LT$T$GT$::map::h13519551999946035702 ()
#17 0x00005555556df625 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::h9730528452447441402 ()
#18 0x00005555556dff1c in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h14690182140726863152 ()
#19 0x00005555556df3ac in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h1712331297869611141 ()
#20 0x00005555556de5fc in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h16619676519180759352 ()
#21 0x00005555556de561 in racer::racer::nameres::WrappedIter<T>.MatchIter::next_match (self=0x7ffff489e400) at src/racer/nameres.rs:642
#22 0x00005555556bec96 in racer::racer::nameres::Box<MatchIter+ 'static>.Iterator<Match>::next (self=0x7fffffe0e9a0) at src/racer/nameres.rs:633
#23 0x00005555556beb70 in iter::Iterator::nth::h18321729594562669831 ()
#24 0x00005555556bf16e in racer::racer::nameres::resolve_path (path=0x7fffffe0f950, filepath=0x7ffff4837be0, pos=0, search_type=ExactMatch, namespace=BothNamespaces) at src/racer/nameres.rs:762
#25 0x00005555556f1bf0 in racer::racer::matchers::match_use (msrc=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837be0, search_type=ExactMatch, local=true) at src/racer/matchers.rs:520
#26 0x00005555556d6572 in racer::racer::matchers::match_types (src=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837be0, search_type=ExactMatch, local=true) at src/racer/matchers.rs:37
#27 0x00005555556d20c9 in racer::racer::nameres::search_scope (point=0, src=..., pathseg=0x7ffff4837c08, filepath=0x7ffff4837be0, search_type=ExactMatch, local=true, namespace=TypeNamespace)
    at src/racer/nameres.rs:487
#28 0x00005555556d8c79 in racer::racer::nameres::search_local_scopes (pathseg=0x7ffff4837c08, filepath=0x7ffff4837be0, msrc=..., point=0, search_type=ExactMatch, namespace=TypeNamespace)
    at src/racer/nameres.rs:537
#29 0x00005555556dcf7b in fn"fn"(16552) () at src/racer/nameres.rs:713
#30 0x00005555556dce5d in fn"fn"(16539) (p={struct MoveItems<racer::racer::Match> (void)} 0x7fffffe148a0) at src/racer/util.rs:175
#31 0x00005555556dfe05 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::closure.16666 ()
#32 0x00005555556df987 in option::Option$LT$T$GT$::map::h13519551999946035702 ()
#33 0x00005555556df625 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::h9730528452447441402 ()
#34 0x00005555556dff1c in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h14690182140726863152 ()
#35 0x00005555556df3ac in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h1712331297869611141 ()
#36 0x00005555556de5fc in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h16619676519180759352 ()
#37 0x00005555556de561 in racer::racer::nameres::WrappedIter<T>.MatchIter::next_match (self=0x7ffff489e180) at src/racer/nameres.rs:642
#38 0x00005555556bec96 in racer::racer::nameres::Box<MatchIter+ 'static>.Iterator<Match>::next (self=0x7fffffe157a0) at src/racer/nameres.rs:633
#39 0x00005555556beb70 in iter::Iterator::nth::h18321729594562669831 ()
#40 0x00005555556bf16e in racer::racer::nameres::resolve_path (path=0x7fffffe16750, filepath=0x7ffff4837b40, pos=0, search_type=ExactMatch, namespace=BothNamespaces) at src/racer/nameres.rs:762
#41 0x00005555556f1bf0 in racer::racer::matchers::match_use (msrc=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837b40, search_type=ExactMatch, local=true) at src/racer/matchers.rs:520
#42 0x00005555556d6572 in racer::racer::matchers::match_types (src=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837b40, search_type=ExactMatch, local=true) at src/racer/matchers.rs:37
#43 0x00005555556d20c9 in racer::racer::nameres::search_scope (point=0, src=..., pathseg=0x7ffff4837b68, filepath=0x7ffff4837b40, search_type=ExactMatch, local=true, namespace=TypeNamespace)
    at src/racer/nameres.rs:487
#44 0x00005555556d8c79 in racer::racer::nameres::search_local_scopes (pathseg=0x7ffff4837b68, filepath=0x7ffff4837b40, msrc=..., point=0, search_type=ExactMatch, namespace=TypeNamespace)
    at src/racer/nameres.rs:537
#45 0x00005555556dcf7b in fn"fn"(16552) () at src/racer/nameres.rs:713
#46 0x00005555556dce5d in fn"fn"(16539) (p={struct MoveItems<racer::racer::Match> (void)} 0x7fffffe1b6a0) at src/racer/util.rs:175
#47 0x00005555556dfe05 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::closure.16666 ()
#48 0x00005555556df987 in option::Option$LT$T$GT$::map::h13519551999946035702 ()
#49 0x00005555556df625 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::h9730528452447441402 ()
#50 0x00005555556dff1c in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h14690182140726863152 ()
#51 0x00005555556df3ac in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h1712331297869611141 ()
#52 0x00005555556de5fc in iter::Chain$LT$T$C$$x20U$GT$.Iterator$LT$A$GT$::next::h16619676519180759352 ()
#53 0x00005555556de561 in racer::racer::nameres::WrappedIter<T>.MatchIter::next_match (self=0x7ffff489df00) at src/racer/nameres.rs:642
#54 0x00005555556bec96 in racer::racer::nameres::Box<MatchIter+ 'static>.Iterator<Match>::next (self=0x7fffffe1c5a0) at src/racer/nameres.rs:633
#55 0x00005555556beb70 in iter::Iterator::nth::h18321729594562669831 ()
#56 0x00005555556bf16e in racer::racer::nameres::resolve_path (path=0x7fffffe1d550, filepath=0x7ffff4837aa0, pos=0, search_type=ExactMatch, namespace=BothNamespaces) at src/racer/nameres.rs:762
#57 0x00005555556f1bf0 in racer::racer::matchers::match_use (msrc=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837aa0, search_type=ExactMatch, local=true) at src/racer/matchers.rs:520
#58 0x00005555556d6572 in racer::racer::matchers::match_types (src=..., blobstart=6846, blobend=6873, searchstr=..., filepath=0x7ffff4837aa0, search_type=ExactMatch, local=true) at src/racer/matchers.rs:37
#59 0x00005555556d20c9 in racer::racer::nameres::search_scope (point=0, src=..., pathseg=0x7ffff4837ac8, filepath=0x7ffff4837aa0, search_type=ExactMatch, local=true, namespace=TypeNamespace)
    at src/racer/nameres.rs:487
#60 0x00005555556d8c79 in racer::racer::nameres::search_local_scopes (pathseg=0x7ffff4837ac8, filepath=0x7ffff4837aa0, msrc=..., point=0, search_type=ExactMatch, namespace=TypeNamespace)
    at src/racer/nameres.rs:537
#61 0x00005555556dcf7b in fn"fn"(16552) () at src/racer/nameres.rs:713
#62 0x00005555556dce5d in fn"fn"(16539) (p={struct MoveItems<racer::racer::Match> (void)} 0x7fffffe224a0) at src/racer/util.rs:175
#63 0x00005555556dfe05 in iter::FlatMap$LT$$x27a$C$$x20A$C$$x20T$C$$x20U$GT$.Iterator$LT$B$GT$::next::closure.16666 ()
#64 0x00005555556df987 in option::Option$LT$T$GT$::map::h13519551999946035702 ()
[...]

[ebfe]

Looks like #57 again.

[phildawes]

I don't think this is the same. It looks like globs connected to the new namespaced enums that's confusing it.
Running with the debug logging on points at the 'pub use self::SeekStyle::*;' at the top of libstd/io/mod.rs. E.g. try

RUST_LOG=main=debug racer complete std::io::

I'll try to fix this tonight

[phildawes]

Hmm.. It's a bit more tricky than I was hoping because you can have things like.

#![feature(globs)]
pub use self::mod1::*;
pub use self::mod2::*;
pub use self::MyEnum::*;

pub mod mod1 {
    pub mod mod2 {
        pub enum MyEnum {
            V1,
            V2
        }
    }
}

fn main() {
    let v = V1;    // this is legit!
}

I think racer will need to do memoization and then abort on a recursive glob path. Am not going to get this finished tonight unfortunately

[phildawes]

Have added a notice to the front page. I've gone down with some sort of flu bug so I'm not going to get this done today either, sorry!

[kiljacken]

That's totally fine. Get well soon!

On Thu, Nov 20, 2014, 20:46 phildawes [email protected] wrote:

Have added a notice to the front page. I've gone down with some sort of
flu bug so I'm not going to get this done today either, sorry!

—
Reply to this email directly or view it on GitHub
#70 (comment).

[phildawes]

Thanks kiljacken!
I've think I've fixed this now. Does it work on windows?

[kiljacken]

It does indeed seem fixed!

Thanks or your hard work.