Closed
Description
Code
#![crate_type="lib"]
use std::{collections::HashMap, hash::Hash};
struct C;
trait Ctx {
type BindGroupId;
}
impl Ctx for C {
type BindGroupId = u32;
}
pub struct BindGroup {
_id: <C as Ctx>::BindGroupId,
}
#[derive(Copy, Clone)]
pub struct BindGroupRef<'a>(&'a BindGroup);
impl<'a> PartialEq for BindGroupRef<'a> {
fn eq(&self, other: &Self) -> bool {
&*self.0 as *const BindGroup == &*other.0 as *const BindGroup
}
}
impl<'a> Eq for BindGroupRef<'a> {}
impl<'a> Hash for BindGroupRef<'a> {
fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
(&*self.0 as *const BindGroup).hash(state);
}
}
pub struct Context<'a> {
map: HashMap<BindGroupRef<'a>, u32>,
}
impl<'a> Context<'a> {
pub fn insert(&mut self, bind_group: &'a BindGroup) {
self.map.insert(BindGroupRef(bind_group), 1);
}
}Meta
rustc --version --verbose:
rustc 1.52.1 (9bc8c42bb 2021-05-09)
binary: rustc
commit-hash: 9bc8c42bb2f19e745a63f3445f1ac248fb015e53
commit-date: 2021-05-09
host: x86_64-pc-windows-msvc
release: 1.52.1
LLVM version: 12.0.0
This error also occurs on nightly, that last version that it worked on was 1.51.
It seems that this only occurs if the crate-type is lib. Even if I remove a pub, it can compile successfully.
Error output
Compiling ice_test v0.1.0 (C:\Users\David\Documents\GitHub\ice_test)
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler\rustc_mir\src\monomorphize\collector.rs:746:93
stack backtrace:
0: 0x7ff97f0681fe - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbc74f7e0bfeacc3c
1: 0x7ff97f0932fc - core::fmt::write::h21444a3971da01ea
2: 0x7ff97f05be68 - <std::io::IoSliceMut as core::fmt::Debug>::fmt::h826464ad0b49271e
3: 0x7ff97f06c39d - std::panicking::take_hook::h3044e321765c5bc0
4: 0x7ff97f06be69 - std::panicking::take_hook::h3044e321765c5bc0
5: 0x7ff95bb6cd67 - rustc_driver::report_ice::h2924aece1396e3b2
6: 0x7ff97f06cbf5 - std::panicking::rust_panic_with_hook::h9bc2ba6fb9e8afc8
7: 0x7ff97f06c733 - rust_begin_unwind
8: 0x7ff97f068b1f - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbc74f7e0bfeacc3c
9: 0x7ff97f06c6b9 - rust_begin_unwind
10: 0x7ff97f0c5630 - core::panicking::panic_fmt::h4afad618263d181d
11: 0x7ff97f0c557c - core::panicking::panic::h9d4ec9844559842b
12: 0x7ff95ece36ad - <rustc_mir::monomorphize::collector::MirNeighborCollector as rustc_middle::mir::visit::Visitor>::visit_terminator::hcdde1de3787208af
13: 0x7ff95ece6dc2 - <rustc_mir::monomorphize::collector::RootCollector as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_impl_item::h5839b6f0482da285
14: 0x7ff95ecdf603 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
15: 0x7ff95ecdf832 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
16: 0x7ff95ecdf832 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
17: 0x7ff95ecdf832 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
18: 0x7ff95ecdf832 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
19: 0x7ff95ecdf832 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
20: 0x7ff95ecddf88 - rustc_mir::monomorphize::collector::collect_crate_mono_items::hc869d40906e46d1f
21: 0x7ff95efd8029 - rustc_mir::monomorphize::partitioning::partition::h3f2686721f839ef6
22: 0x7ff95e7b71ea - <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_foreign_item::hd54389a61e1546bf
23: 0x7ff95e92e623 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::try_print_query_stack::hd396f5d73fd6bafc
24: 0x7ff95e9efc3b - <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::store_diagnostics_for_anon_node::hef4094f9d7d4b7c1
25: 0x7ff95e6da77b - <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_foreign_item::hd54389a61e1546bf
26: 0x7ff95e68702f - <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_foreign_item::hd54389a61e1546bf
27: 0x7ff95e8f7918 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::try_print_query_stack::hd396f5d73fd6bafc
28: 0x7ff95f12b06c - rustc_codegen_ssa::back::symbol_export::crates_export_threshold::h241c297691609457
29: 0x7ff95e9239ae - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::try_print_query_stack::hd396f5d73fd6bafc
30: 0x7ff95e9e6a05 - <rustc_query_impl::plumbing::QueryCtxt as rustc_query_system::query::QueryContext>::store_diagnostics_for_anon_node::hef4094f9d7d4b7c1
31: 0x7ff95e6d45bd - <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_foreign_item::hd54389a61e1546bf
32: 0x7ff95e5f1d6f - <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_foreign_item::hd54389a61e1546bf
33: 0x7ff95e8f7842 - <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::try_print_query_stack::hd396f5d73fd6bafc
34: 0x7ff95f26cc95 - <rustc_metadata::rmeta::encoder::EncodeContext as rustc_middle::ty::codec::TyEncoder>::encode_alloc_id::h7a5710125ac2350a
35: 0x7ff95f283767 - <rustc_metadata::rmeta::encoder::ImplVisitor as rustc_hir::itemlikevisit::ItemLikeVisitor>::visit_item::he60760398867c589
36: 0x7ff95f2c99b5 - ZN14rustc_metadata5rmeta69_DERIVE_rustc_serialize_Encodable_EncodeContext_a_tcx_FOR_AssocFnData155_$LT$impl$u20$rustc_serialize..serialize..Encodable$LT$rustc_metadata..rmeta..encoder..EncodeContext$GT$$u20$for$u20$rustc_metadata..rmeta..AssocFnData$GT$6e
37: 0x7ff95f292a62 - rustc_metadata::rmeta::decoder::cstore_impl::<impl rustc_middle::middle::cstore::CrateStore for rustc_metadata::creader::CStore>::encode_metadata::h1ed0b65c27604724
38: 0x7ff95fa7c8a9 - rustc_middle::ty::context::TyCtxt::encode_metadata::ha5e017944f117061
39: 0x7ff95bcbea03 - rustc_interface::passes::BoxedResolver::to_resolver_outputs::h189f623607001da9
40: 0x7ff95bccb4a6 - rustc_interface::queries::Queries::ongoing_codegen::h79b7cd4881f0c623
41: 0x7ff95bb85be7 - <rustc_middle::ty::SymbolName as core::fmt::Debug>::fmt::h7caf896a35c7e6af
42: 0x7ff95bb6eeec - <rustc_driver::Compilation as core::fmt::Debug>::fmt::h8df3c0fee143d8f3
43: 0x7ff95bb88177 - <rustc_middle::ty::SymbolName as core::fmt::Debug>::fmt::h7caf896a35c7e6af
44: 0x7ff95bb77364 - rustc_driver::pretty::print_after_hir_lowering::hcb64343913f571c9
45: 0x7ff95bb88b8f - <rustc_middle::ty::SymbolName as core::fmt::Debug>::fmt::h7caf896a35c7e6af
46: 0x7ff95bba864d - <rustc_middle::ty::SymbolName as core::fmt::Debug>::fmt::h7caf896a35c7e6af
47: 0x7ff97f07bc9a - std::sys::windows::thread::Thread::new::he7957b99123a49eb
48: 0x7ff9c5787034 - BaseThreadInitThunk
49: 0x7ff9c7162651 - RtlUserThreadStart
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.52.1 (9bc8c42bb 2021-05-09) running on x86_64-pc-windows-msvc
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type lib
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [collect_and_partition_mono_items] collect_and_partition_mono_items
#1 [exported_symbols] exported_symbols
end of query stack
error: could not compile `ice_test`
To learn more, run the command again with --verbose.
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Area: Code generationCategory: This is a bug.Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️High priorityRelevant to the compiler team, which will review and decide on the PR/issue.ICE tracked in rust-lang/glacier.Performance or correctness regression from one stable version to another.