Skip to content


rustc --ls ICE #2771

jesse99 opened this Issue · 5 comments

2 participants


rust --ls is now ICEing on every rust library I have tried it on. This is with rust from June 30 on Mac. For example doing an --ls on the library from results in:

gnos: rustc --ls bin/libsocket-9e5595de7eda745e-0.1.dylib 
=Crate Attributes (9e5595de7eda745e)=
#[link(name = "socket",
       vers = "0.1",
       uuid = "AF82CEF5-A320-49C0-AE56-43129C5229D5",
       url = "")]
#[comment = "Rust socket library"]
#[license = "MIT"]
#[crate_type = "lib"]

=External Dependencies=
1 core-d27e4777a53c3e50-0.2
2 std-d399da1ab6f5bec0-0.2

htons (fn)
SO_SNDBUF (const)
htonl (fn)
sendto (fn)
socket_handle::sockfd (public field)
sockaddr_basic (type)
sockaddr4_in (type)
setsockopt (fn)
enablesockopt (fn)
ipv6 (enum)
SO_ERROR (const)
ipv4 (enum)
ntohs (fn)
ntohl (fn)
sockaddr (type)
sockaddr6_in (type)
getaddrinfo (fn)
socket_handle (class)
socket_handle (fn)
rust: task failed at 'describe_def: item not found (0, 3571)', /Users/jessejones/Source/Third_Party/rust/src/rustc/metadata/
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=0,::rt::backtrace to get further details and report the results to
rust: task failed at 'explicit failure', /Users/jessejones/Source/Third_Party/rust/src/rustc/driver/
rust: domain main @0x7f934a800010 root task failed
rust: task failed at 'killed', /Users/jessejones/Source/Third_Party/rust/src/libcore/

Setting RUST_LOG didn't produce any additional output.


Just to be clear, your installed rustc was built from git HEAD as of June 30? That surprises me, because this looks like #2192 , which I fixed six days ago.



@catamorphism catamorphism was assigned

Ok, I'll try to reproduce.


Reproduced with 328fd30 -- I'll look into it.


This appears to be because the list-metadata code is trying to print out info about intrinsic::visit_ty, but the right information about it doesn't get serialized. Further research tomorrow.

@catamorphism catamorphism added a commit that closed this issue
@catamorphism catamorphism Tag re-exports differently in metadata
so that the "list metadata" command doesn't print out anything
about intrinsics, but other code can see them.

Closes #2771
@catamorphism catamorphism was unassigned by jesse99
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.