Closed
Description
use std::ffi::OsStr;
use std::path::Component;
pub fn panic_with_msgbox<'a, I: Iterator<Item = Component<'a>>>(a: I) -> bool {
a.any(|c| match c {
Component::Normal(OsStr::new("src")) => true,
// Component::Normal(&OsStr::new("src")) => true,
_ => false,
})
}error: internal compiler error: src/librustc/middle/mem_categorization.rs:1298: tuple struct pattern didn't resolve to variant or struct Method(DefId(1/0:1293 ~ std[9302]::ffi[0]::os_str[0]::{{impl}}[17]::new[0]))
--> src/lib.rs:14:45
|
14 | a.any(|c| matches!(c, Component::Normal(OsStr::new("src"))))
| ^^^^^^^^^^^^^^^^^
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:571:9
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:197
3: std::panicking::default_hook
at src/libstd/panicking.rs:211
4: rustc::util::common::panic_hook
5: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:478
6: std::panicking::begin_panic
7: rustc_errors::Handler::span_bug
8: rustc::util::bug::opt_span_bug_fmt::{{closure}}
9: rustc::ty::context::tls::with_opt::{{closure}}
10: rustc::ty::context::tls::with_context_opt
11: rustc::ty::context::tls::with_opt
12: rustc::util::bug::opt_span_bug_fmt
13: rustc::util::bug::span_bug_fmt
14: rustc::middle::mem_categorization::MemCategorizationContext::cat_pattern_
15: rustc::middle::mem_categorization::MemCategorizationContext::cat_pattern_
16: rustc::middle::expr_use_visitor::ExprUseVisitor::walk_expr
17: rustc::middle::expr_use_visitor::ExprUseVisitor::consume_expr
18: rustc_typeck::check::upvar::<impl rustc_typeck::check::FnCtxt>::analyze_closure
19: rustc::hir::intravisit::walk_expr
20: rustc_typeck::check::upvar::<impl rustc_typeck::check::FnCtxt>::closure_analyze
21: rustc::ty::context::GlobalCtxt::enter_local
22: rustc_typeck::check::typeck_tables_of
23: rustc::ty::query::__query_compute::typeck_tables_of
24: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute
25: rustc::dep_graph::graph::DepGraph::with_task_impl
26: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
27: rustc::ty::query::__query_compute::typeck_tables_of
28: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute
29: rustc::dep_graph::graph::DepGraph::with_task_impl
30: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
31: rustc::ty::<impl rustc::ty::context::TyCtxt>::par_body_owners
32: rustc_typeck::check::typeck_item_bodies
33: rustc::ty::query::__query_compute::typeck_item_bodies
34: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_item_bodies>::compute
35: rustc::dep_graph::graph::DepGraph::with_task_impl
36: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
37: rustc::util::common::time
38: rustc_typeck::check_crate
39: rustc_interface::passes::analysis
40: rustc::ty::query::__query_compute::analysis
41: rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::analysis>::compute
42: rustc::dep_graph::graph::DepGraph::with_task_impl
43: rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query
44: rustc_interface::passes::BoxedGlobalCtxt::access::{{closure}}
45: rustc_interface::passes::create_global_ctxt::{{closure}}
46: rustc_interface::passes::BoxedGlobalCtxt::enter
47: rustc_interface::interface::run_compiler_in_existing_thread_pool
48: std::thread::local::LocalKey<T>::with
49: scoped_tls::ScopedKey<T>::set
50: syntax::with_globals
query stack during panic:
#0 [typeck_tables_of] processing `panic_with_msgbox`
#1 [typeck_tables_of] processing `panic_with_msgbox::{{closure}}#0`
#2 [typeck_item_bodies] type-checking all item bodies
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors
note: the compiler unexpectedly panicked. this is a bug.
note: rustc 1.36.0-nightly (e305df184 2019-04-24) running on x86_64-unknown-linux-gnu
note: compiler flags: -C debuginfo=2 -C incremental --crate-type lib
This one is very interesting IMHO.
The "original" ICE was introduced between 056f589...4b9b70c, but if I prepend the & before OsStr (the outcommented line), there's a second ICE that is there forever (at least since Rust 1.11).
@rustbot modify labels: I-ICE C-bug