Internal compiler error

[maurizi]

I'm using an MSYS2 shell on Windows 7 64bit. I tested this on 1.0, the 1.1 beta, and the latest nightly (rustc 1.1.0-nightly (21f278a68 2015-04-23) (built 2015-04-24)).

When I try to compile maurizi/rsnotify@68db23b using cargo build --verbose I get the following error:

$ cargo build --verbose
       Fresh libc v0.1.8
       Fresh walker v1.0.0
       Fresh gcc v0.3.8
       Fresh bitflags v0.2.1
       Fresh log v0.3.1
       Fresh winapi v0.1.20
       Fresh kernel32-sys v0.1.0
   Compiling notify v2.0.0 (file:///C:/Users/Mike/Documents/code/rsnotify)
     Running `rustc src\lib.rs --crate-name notify --crate-type lib -g -C metadata=680f9051ec03eca4 -C extra-filename=-680f9051ec03eca4 --out-dir C:\Users\Mike\Documents\code\rsnotify\target\debug --emit=dep-info,link -L dependency=C:\Users\Mike\Documents\code\rsnotify\target\debug -L dependency=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps --extern libc=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\liblibc-2eda841eb12a3090.rlib --extern time=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libtime-f08bec52f4924e95.rlib --extern kernel32=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libkernel32-852914e74bb6c4c5.rlib --extern bitflags=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libbitflags-6ad6262463ad8b4b.rlib --extern walker=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libwalker-80db320aa147f996.rlib --extern log=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\liblog-54cf393d3c69686f.rlib --extern winapi=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libwinapi-529c97af7e4635ff.rlib -L native=C:\Users\Mike\Documents\code\rsnotify\target\debug\build\time-f08bec52f4924e95\out`
       Fresh time v0.1.26
src\windows.rs:19:27: 19:29 warning: unused import, #[warn(unused_imports)] on by default
src\windows.rs:19 use super::{Event, Error, op, Op, Watcher};
                                            ^~
src\windows.rs:19:31: 19:33 warning: unused import, #[warn(unused_imports)] on by default
src\windows.rs:19 use super::{Event, Error, op, Op, Watcher};
                                                ^~
src\windows.rs:31:5: 31:22 warning: struct field is never used: `tx`, #[warn(dead_code)] on by default
src\windows.rs:31     tx: Sender<Event>,
                      ^~~~~~~~~~~~~~~~~
src\windows.rs:33:5: 33:19 warning: struct field is never used: `handle`, #[warn(dead_code)] on by default
src\windows.rs:33     handle: HANDLE
                      ^~~~~~~~~~~~~~
src\windows.rs:82:17: 86:20 warning: unused result which must be used, #[warn(unused_must_use)] on by default
src\windows.rs:82                 self.tx.send(Event {
src\windows.rs:83                     path: None,
src\windows.rs:84                     // TODO: Call GetLastError for better error info?
src\windows.rs:85                     op: Err(Error::WatchNotFound)
src\windows.rs:86                 });
src\windows.rs:118:17: 118:24 warning: unused variable: `success`, #[warn(unused_variables)] on by default
src\windows.rs:118             let success = kernel32::ReadDirectoryChangesW(
                                   ^~~~~~~
src\windows.rs:144:56: 144:61 warning: unused variable: `bytes`, #[warn(unused_variables)] on by default
src\windows.rs:144 unsafe extern "system" fn handle_event(errorCode: u32, bytes: u32, overlapped: LPOVERLAPPED) {
                                                                          ^~~~~
src\windows.rs:151:9: 151:16 warning: unused variable: `request`, #[warn(unused_variables)] on by default
src\windows.rs:151     let request: Box<ReadDirectoryRequest> = mem::transmute((*overlapped).hEvent);
                           ^~~~~~~
src\windows.rs:144:40: 144:49 warning: variable `errorCode` should have a snake case name such as `error_code`, #[warn(non_snake_case)] on by default
src\windows.rs:144 unsafe extern "system" fn handle_event(errorCode: u32, bytes: u32, overlapped: LPOVERLAPPED) {
                                                          ^~~~~~~~~
src\windows.rs:168:9: 168:57 warning: unused result which must be used, #[warn(unused_must_use)] on by default
src\windows.rs:168         self.tx.send(Action::Watch(path.to_path_buf()));
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src\windows.rs:173:9: 173:59 warning: unused result which must be used, #[warn(unused_must_use)] on by default
src\windows.rs:173         self.tx.send(Action::Unwatch(path.to_path_buf()));
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src\windows.rs:180:9: 180:36 warning: unused result which must be used, #[warn(unused_must_use)] on by default
src\windows.rs:180         self.tx.send(Action::Stop);
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
Assertion failed!

Program: C:\Programs\Rust\bin\rustc.exe
File: C:/bot/slave/nightly-dist-rustc-win-64/build/src/llvm/include/llvm/IR/Instructions.h, Line 782

Expression: Ty && "Invalid GetElementPtrInst indices for type!"
Could not compile `notify`.

Caused by:
  Process didn't exit successfully: `rustc src\lib.rs --crate-name notify --crate-type lib -g -C metadata=680f9051ec03eca4 -C extra-filename=-680f9051ec03eca4 --out-dir C:\Users\Mike\Documents\code\rsnotify\target\debug --emit=dep-info,link -L dependency=C:\Users\Mike\Documents\code\rsnotify\target\debug -L dependency=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps --extern libc=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\liblibc-2eda841eb12a3090.rlib --extern time=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libtime-f08bec52f4924e95.rlib --extern kernel32=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libkernel32-852914e74bb6c4c5.rlib --extern bitflags=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libbitflags-6ad6262463ad8b4b.rlib --extern walker=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libwalker-80db320aa147f996.rlib --extern log=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\liblog-54cf393d3c69686f.rlib --extern winapi=C:\Users\Mike\Documents\code\rsnotify\target\debug\deps\libwinapi-529c97af7e4635ff.rlib -L native=C:\Users\Mike\Documents\code\rsnotify\target\debug\build\time-f08bec52f4924e95\out` (exit code: 3)

If I comment out the body of this function it will successfully compile maurizi/rsnotify@fc28778. Though it seems to be the if let statement causing the issue: if I leave out the unsafe body in the if let block, I still get an ICE

[Stebalien]

Related to #23649? It's the same assertion.

[Mark-Simulacrum]

Issue #23649 has been closed. The commit linked above does not compile, but also does not ICE.

[Mark-Simulacrum]

I'm going to close per my previous comment.