llvm: Assertion `Ty && "Invalid GetElementPtrInst indices for type!"' failed.

[cuviper]

Fedora 21 x86_64, rustc 1.0.0-nightly (b0aad7d 2015-03-22) (built 2015-03-23).

I hit an assertion when compiling cuviper/rust-git-fs@db151bc. I haven't tried to reduce it yet.

rustc: /home/rustbuild/src/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/llvm/include/llvm/IR/Instructions.h:782: llvm::Type* llvm::checkGEPType(llvm::Type*): Assertion `Ty && "Invalid GetElementPtrInst indices for type!"' failed.

Stack trace from coredumpctl:

Stack trace of thread 25718:
#0  0x00007f504e03f8d7 __GI_raise (libc.so.6)
#1  0x00007f504e04153a __GI_abort (libc.so.6)
#2  0x00007f504e03847d __assert_fail_base (libc.so.6)
#3  0x00007f504e038532 __GI___assert_fail (libc.so.6)
#4  0x00007f504911dd68 _ZN4llvm12checkGEPTypeEPNS_4TypeE.part.95 (librustc_llvm-4e7c5e5c.so)
#5  0x00007f504911fa73 _ZN4llvm17GetElementPtrInst16getGEPReturnTypeEPNS_5ValueENS_8ArrayRefIS2_EE (librustc_llvm-4e7c5e5c.so)
#6  0x00007f504911fade _ZN4llvm17GetElementPtrInstC2EPNS_5ValueENS_8ArrayRefIS2_EEjRKNS_5TwineEPNS_11InstructionE (librustc_llvm-4e7c5e5c.so)
#7  0x00007f5049121c8f _ZN4llvm9IRBuilderILb1ENS_14ConstantFolderENS_24IRBuilderDefaultInserterILb1EEEE17CreateInBoundsGEPEPNS_5ValueENS_8ArrayRefIS6_EERKNS_5TwineE (librustc_llvm-4e7c5e5c.so)
#8  0x00007f504a1a42ec LLVMBuildInBoundsGEP (librustc_llvm-4e7c5e5c.so)
#9  0x00007f504dbae926 _ZN5trans5build4GEPi20hc71b126e77a04cc55jpE (librustc_trans-4e7c5e5c.so)
#10 0x00007f504dc79632 _ZN5trans6_match16compile_submatch20h6e016bcd208285adjVvE (librustc_trans-4e7c5e5c.so)
#11 0x00007f504dc809d9 _ZN5trans6_match25compile_submatch_continue20h731efec36c660dc3e1vE (librustc_trans-4e7c5e5c.so)
#12 0x00007f504dc79a59 _ZN5trans6_match16compile_submatch20h6e016bcd208285adjVvE (librustc_trans-4e7c5e5c.so)
#13 0x00007f504dc7d385 _ZN5trans6_match25compile_submatch_continue20h731efec36c660dc3e1vE (librustc_trans-4e7c5e5c.so)
#14 0x00007f504dc79a59 _ZN5trans6_match16compile_submatch20h6e016bcd208285adjVvE (librustc_trans-4e7c5e5c.so)
#15 0x00007f504dc82a4e _ZN5trans6_match17trans_match_inner20h331c89f2cce6152f3swE (librustc_trans-4e7c5e5c.so)
#16 0x00007f504dbe1d2d _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)
#17 0x00007f504db9d14a _ZN5trans4expr10trans_into20hd7c15316e0f4e95818gE (librustc_trans-4e7c5e5c.so)
#18 0x00007f504db9e163 _ZN5trans11controlflow11trans_block20h5e8ab5bfa7f25c74R5dE (librustc_trans-4e7c5e5c.so)
#19 0x00007f504dc636a9 _ZN5trans4base13trans_closure20heebe9acc13fc14ffh4sE (librustc_trans-4e7c5e5c.so)
#20 0x00007f504db87cb9 _ZN5trans4base8trans_fn20h62bbdc2e4afebf2baftE (librustc_trans-4e7c5e5c.so)
#21 0x00007f504db893a1 _ZN5trans12monomorphize14monomorphic_fn20h1eb68cf48c5b441bqtdE (librustc_trans-4e7c5e5c.so)
#22 0x00007f504dbc77b0 _ZN5trans6callee24trans_fn_ref_with_substs20ha0b048ac20220cf3v6fE (librustc_trans-4e7c5e5c.so)
#23 0x00007f504dbdb9ae _ZN5trans4meth19trans_method_callee20hb455f746b59e4bdbvNxE (librustc_trans-4e7c5e5c.so)
#24 0x00007f504dbd7daa _ZN5trans6callee16trans_call_inner21h15762136108892919716E (librustc_trans-4e7c5e5c.so)
#25 0x00007f504dbe15a8 _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)
#26 0x00007f504db9d14a _ZN5trans4expr10trans_into20hd7c15316e0f4e95818gE (librustc_trans-4e7c5e5c.so)
#27 0x00007f504db9c325 _ZN5trans11controlflow15trans_stmt_semi20h106b31175f759eb944dE (librustc_trans-4e7c5e5c.so)
#28 0x00007f504db9ddc1 _ZN5trans11controlflow11trans_block20h5e8ab5bfa7f25c74R5dE (librustc_trans-4e7c5e5c.so)
#29 0x00007f504dc636a9 _ZN5trans4base13trans_closure20heebe9acc13fc14ffh4sE (librustc_trans-4e7c5e5c.so)
#30 0x00007f504db87cb9 _ZN5trans4base8trans_fn20h62bbdc2e4afebf2baftE (librustc_trans-4e7c5e5c.so)
#31 0x00007f504db892fc _ZN5trans12monomorphize14monomorphic_fn20h1eb68cf48c5b441bqtdE (librustc_trans-4e7c5e5c.so)
#32 0x00007f504dbc77b0 _ZN5trans6callee24trans_fn_ref_with_substs20ha0b048ac20220cf3v6fE (librustc_trans-4e7c5e5c.so)
#33 0x00007f504dbc5d8f _ZN5trans6callee12trans_fn_ref20h307ba6fabe2bf10f5UfE (librustc_trans-4e7c5e5c.so)
#34 0x00007f504dbc39ae _ZN5trans6callee5trans20h377cc02a72432fc1mKfE (librustc_trans-4e7c5e5c.so)
#35 0x00007f504dbd652c _ZN5trans6callee16trans_call_inner21h12051749445897582865E (librustc_trans-4e7c5e5c.so)
#36 0x00007f504dbe27d5 _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)
#37 0x00007f504db9d14a _ZN5trans4expr10trans_into20hd7c15316e0f4e95818gE (librustc_trans-4e7c5e5c.so)
#38 0x00007f504db9e163 _ZN5trans11controlflow11trans_block20h5e8ab5bfa7f25c74R5dE (librustc_trans-4e7c5e5c.so)
#39 0x00007f504dc636a9 _ZN5trans4base13trans_closure20heebe9acc13fc14ffh4sE (librustc_trans-4e7c5e5c.so)
#40 0x00007f504db87cb9 _ZN5trans4base8trans_fn20h62bbdc2e4afebf2baftE (librustc_trans-4e7c5e5c.so)
#41 0x00007f504db893a1 _ZN5trans12monomorphize14monomorphic_fn20h1eb68cf48c5b441bqtdE (librustc_trans-4e7c5e5c.so)
#42 0x00007f504dbc77b0 _ZN5trans6callee24trans_fn_ref_with_substs20ha0b048ac20220cf3v6fE (librustc_trans-4e7c5e5c.so)
#43 0x00007f504dbc5d8f _ZN5trans6callee12trans_fn_ref20h307ba6fabe2bf10f5UfE (librustc_trans-4e7c5e5c.so)
#44 0x00007f504dbd9656 _ZN5trans4meth19trans_method_callee20hb455f746b59e4bdbvNxE (librustc_trans-4e7c5e5c.so)
#45 0x00007f504dbd7daa _ZN5trans6callee16trans_call_inner21h15762136108892919716E (librustc_trans-4e7c5e5c.so)
#46 0x00007f504dbe15a8 _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)
#47 0x00007f504db9d14a _ZN5trans4expr10trans_into20hd7c15316e0f4e95818gE (librustc_trans-4e7c5e5c.so)
#48 0x00007f504dc9a9b8 _ZN5trans6_match17mk_binding_alloca20h2797419740632493683E (librustc_trans-4e7c5e5c.so)
#49 0x00007f504db9c58e _ZN5trans4base10init_local20h96ebc929e2d1c887ljsE (librustc_trans-4e7c5e5c.so)
#50 0x00007f504db9ddf3 _ZN5trans11controlflow11trans_block20h5e8ab5bfa7f25c74R5dE (librustc_trans-4e7c5e5c.so)
#51 0x00007f504dc636a9 _ZN5trans4base13trans_closure20heebe9acc13fc14ffh4sE (librustc_trans-4e7c5e5c.so)
#52 0x00007f504db87cb9 _ZN5trans4base8trans_fn20h62bbdc2e4afebf2baftE (librustc_trans-4e7c5e5c.so)
#53 0x00007f504db893a1 _ZN5trans12monomorphize14monomorphic_fn20h1eb68cf48c5b441bqtdE (librustc_trans-4e7c5e5c.so)
#54 0x00007f504dbc77b0 _ZN5trans6callee24trans_fn_ref_with_substs20ha0b048ac20220cf3v6fE (librustc_trans-4e7c5e5c.so)
#55 0x00007f504dbc5d8f _ZN5trans6callee12trans_fn_ref20h307ba6fabe2bf10f5UfE (librustc_trans-4e7c5e5c.so)
#56 0x00007f504dbd9656 _ZN5trans4meth19trans_method_callee20hb455f746b59e4bdbvNxE (librustc_trans-4e7c5e5c.so)
#57 0x00007f504dbd7daa _ZN5trans6callee16trans_call_inner21h15762136108892919716E (librustc_trans-4e7c5e5c.so)
#58 0x00007f504dbe15a8 _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)
#59 0x00007f504dbe0509 _ZN5trans4expr16trans_unadjusted20he43ea67f07250abdyRhE (librustc_trans-4e7c5e5c.so)
#60 0x00007f504db9eac1 _ZN5trans4expr5trans20h65042838189368a2jfhE (librustc_trans-4e7c5e5c.so)
#61 0x00007f504dbd2244 _ZN5trans6callee10trans_args20h1b74c36c536d5b2bNMgE (librustc_trans-4e7c5e5c.so)
#62 0x00007f504dbd8c18 _ZN5trans6callee16trans_call_inner21h15762136108892919716E (librustc_trans-4e7c5e5c.so)
#63 0x00007f504dbe15a8 _ZN5trans4expr27trans_rvalue_dps_unadjusted20hab2f29f73a88d75b1miE (librustc_trans-4e7c5e5c.so)

Stack trace of thread 25717:
#0  0x00007f50484275e5 pthread_join (libpthread.so.0)
#1  0x00007f504e52aef3 _ZN6thread10JoinHandle4join20h8b3b5dfc3089534c7mwE (libstd-4e7c5e5c.so)
#2  0x00007f504ec217ad _ZN3run20h063ba822e25c126bb2bE (librustc_driver-4e7c5e5c.so)
#3  0x00007f504ec35c6c _ZN4main20h01390c9895ee9e70k9cE (librustc_driver-4e7c5e5c.so)
#4  0x00007f504e5d8359 rust_try_inner (libstd-4e7c5e5c.so)
#5  0x00007f504e5d8346 rust_try (libstd-4e7c5e5c.so)
#6  0x00007f504e5642ac _ZN2rt10lang_start20h9704c9322344f817UdJE (libstd-4e7c5e5c.so)
#7  0x00007f504e02afe0 __libc_start_main (libc.so.6)
#8  0x00007f504f093749 _start (rustc)

[mahkoh]

pub struct X([u8]);

fn _f(x: &X) { match *x { X(ref x) =>  { } } }

fn main() { }

Assertion `Ty && "Invalid GetElementPtrInst indices for type!"' failed.

[cuviper]

I narrowed this down to my RefDir::lookup(), where a HashMap<PathBuf,_> is indexed by a &Path. I can reproduce the crash with this smaller example:

use std::collections::HashMap;
use std::path::{Path, PathBuf};

fn main() {
    let m: HashMap<PathBuf, ()> = HashMap::new();
    let k = Path::new("foo");
    println!("{:?}", m.get(k));
}

If I convert k to a PathBuf first, then all is fine.

[tomprogrammer]

Another example is:

#[derive(PartialEq)]
struct Slice { slice: [u8] }

[arielb1]

Does not seem to affect beta or nightly. Marking as E-needstest

[frewsxcv]

I'll add regression tests for these examples right now