Closed
Description
Code
use std::iter::Iterator;
fn map<T, U, I: Iterator<T>>(fun: |T| -> U, mut iter: I) -> Vec<U> {
let mut acc = vec![];
for elt in iter {
acc.push(fun(elt));
}
acc
}
fn main() {
let x = map(|&x| x + 2, vec![1u,2,3].iter());
println!("{}", x);
}Meta
rustc --version --verbose:
rustc 1.65.0-nightly (060e47f74 2022-08-23)
binary: rustc
commit-hash: 060e47f74a91b28c3db28d80a6a9d6841ca51026
commit-date: 2022-08-23
host: x86_64-unknown-linux-gnu
release: 1.65.0-nightly
LLVM version: 15.0.0
Error output
rustc ./20108.rs -Zunpretty=hir
error: expected type, found `|`
--> ./20108.rs:3:35
|
3 | fn map<T, U, I: Iterator<T>>(fun: |T| -> U, mut iter: I) -> Vec<U> {
| ^ expected type
error: invalid suffix `u` for number literal
--> ./20108.rs:12:34
|
12 | let x = map(|&x| x + 2, vec![1u,2,3].iter());
| ^^ invalid suffix `u`
|
= help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
error[E0425]: cannot find function `fun` in this scope
--> ./20108.rs:6:18
|
6 | acc.push(fun(elt));
| ^^^ not found in this scope
Backtrace
thread 'rustc' panicked at 'internal error: entered unreachable code', compiler/rustc_ast/src/util/literal.rs:202:29
stack backtrace:
0: 0x7f729b6cc750 - std::backtrace_rs::backtrace::libunwind::trace::h18bb8883b170e61e
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
1: 0x7f729b6cc750 - std::backtrace_rs::backtrace::trace_unsynchronized::hfbfd04778228f53a
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f729b6cc750 - std::sys_common::backtrace::_print_fmt::hf014d9c7ceb4c50b
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys_common/backtrace.rs:66:5
3: 0x7f729b6cc750 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0cff30d852e41e28
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys_common/backtrace.rs:45:22
4: 0x7f729b727a5e - core::fmt::write::hf3278c297bc3e8c3
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/core/src/fmt/mod.rs:1202:17
5: 0x7f729b6bd4d5 - std::io::Write::write_fmt::hb3fb7e9de918605f
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/io/mod.rs:1672:15
6: 0x7f729b6cf413 - std::sys_common::backtrace::_print::hb735a2b0aa8c9126
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys_common/backtrace.rs:48:5
7: 0x7f729b6cf413 - std::sys_common::backtrace::print::h1d481f5d3b90ee64
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys_common/backtrace.rs:35:9
8: 0x7f729b6cf413 - std::panicking::default_hook::{{closure}}::h3cda275262afb117
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/panicking.rs:295:22
9: 0x7f729b6cf0ff - std::panicking::default_hook::h2eba6d64b7e32862
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/panicking.rs:314:9
10: 0x7f729df1d4e4 - <rustc_driver[b627559a5a77e284]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[e3f13d716672aa]::ops::function::FnOnce<(&core[e3f13d716672aa]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
11: 0x7f729b6cfc4d - std::panicking::rust_panic_with_hook::hfaad0ec4972467c1
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/panicking.rs:702:17
12: 0x7f729b6cfa61 - std::panicking::begin_panic_handler::{{closure}}::h401c5684148433ac
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/panicking.rs:586:13
13: 0x7f729b6ccc5c - std::sys_common::backtrace::__rust_end_short_backtrace::h356ecf2a7ec67271
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys_common/backtrace.rs:138:18
14: 0x7f729b6cf7c2 - rust_begin_unwind
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/panicking.rs:584:5
15: 0x7f729b724573 - core::panicking::panic_fmt::h9555dfef52eae25e
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/core/src/panicking.rs:142:14
16: 0x7f729b7243bd - core::panicking::panic::hbe0e36c7510ee8e3
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/core/src/panicking.rs:48:5
17: 0x7f729cf37d8f - <rustc_ast[7723d7f951651904]::ast::LitKind>::to_token_lit
18: 0x7f729cf34601 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
19: 0x7f729cf381fc - <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_cmnt::<rustc_hir[bd2c63ffa7ad50d5]::hir::Expr, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#0}, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#1}>
20: 0x7f729cf349a9 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
21: 0x7f729cf35a8d - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
22: 0x7f729cf381fc - <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_cmnt::<rustc_hir[bd2c63ffa7ad50d5]::hir::Expr, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#0}, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#1}>
23: 0x7f729cf348c0 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
24: 0x7f729cf3543b - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
25: 0x7f729cf381fc - <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_cmnt::<rustc_hir[bd2c63ffa7ad50d5]::hir::Expr, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#0}, <rustc_hir_pretty[541b7d9012655fc5]::State>::commasep_exprs::{closure#1}>
26: 0x7f729cf348c0 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
27: 0x7f729cf3b16f - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_stmt
28: 0x7f729cf3a755 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_block_maybe_unclosed
29: 0x7f729cf34cd4 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_expr
30: 0x7f729df13b44 - <rustc_driver[b627559a5a77e284]::pretty::IdentifiedAnnotation as rustc_hir_pretty[541b7d9012655fc5]::PpAnn>::nested
31: 0x7f729d9ac6b6 - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_item
32: 0x7f729df13b44 - <rustc_driver[b627559a5a77e284]::pretty::IdentifiedAnnotation as rustc_hir_pretty[541b7d9012655fc5]::PpAnn>::nested
33: 0x7f729eb4fe3d - <rustc_hir_pretty[541b7d9012655fc5]::State>::print_mod
34: 0x7f729eb4f52e - rustc_hir_pretty[541b7d9012655fc5]::print_crate
35: 0x7f729df16e70 - rustc_driver[b627559a5a77e284]::pretty::print_after_hir_lowering::{closure#1}
36: 0x7f729df16741 - rustc_driver[b627559a5a77e284]::pretty::print_after_hir_lowering
37: 0x7f729defa1ca - <rustc_interface[bf5d5e33b83f0123]::passes::QueryContext>::enter::<rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}::{closure#2}::{closure#1}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>
38: 0x7f729d7d554f - <rustc_interface[bf5d5e33b83f0123]::interface::Compiler>::enter::<rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}::{closure#2}, core[e3f13d716672aa]::result::Result<core[e3f13d716672aa]::option::Option<rustc_interface[bf5d5e33b83f0123]::queries::Linker>, rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>
39: 0x7f729d7d0d5c - rustc_span[bead5e57778f0b1b]::with_source_map::<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_interface[bf5d5e33b83f0123]::interface::create_compiler_and_run<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}>::{closure#1}>
40: 0x7f729d7d07d2 - rustc_interface[bf5d5e33b83f0123]::interface::create_compiler_and_run::<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}>
41: 0x7f729d7cf2c1 - <scoped_tls[c2b62212662a5735]::ScopedKey<rustc_span[bead5e57778f0b1b]::SessionGlobals>>::set::<rustc_interface[bf5d5e33b83f0123]::interface::run_compiler<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}>::{closure#0}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>
42: 0x7f729d7cefaf - std[bb5449232b08fe6e]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[bf5d5e33b83f0123]::util::run_in_thread_pool_with_globals<rustc_interface[bf5d5e33b83f0123]::interface::run_compiler<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}>::{closure#0}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>::{closure#0}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>
43: 0x7f729dd3c059 - <<std[bb5449232b08fe6e]::thread::Builder>::spawn_unchecked_<rustc_interface[bf5d5e33b83f0123]::util::run_in_thread_pool_with_globals<rustc_interface[bf5d5e33b83f0123]::interface::run_compiler<core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>, rustc_driver[b627559a5a77e284]::run_compiler::{closure#1}>::{closure#0}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>::{closure#0}, core[e3f13d716672aa]::result::Result<(), rustc_errors[96dfb46f0b8980b]::ErrorGuaranteed>>::{closure#1} as core[e3f13d716672aa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
44: 0x7f729b6d97a3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd8b4f77c73b6de54
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/alloc/src/boxed.rs:1940:9
45: 0x7f729b6d97a3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h396dcf115ad932d5
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/alloc/src/boxed.rs:1940:9
46: 0x7f729b6d97a3 - std::sys::unix::thread::Thread::new::thread_start::h004395cd09d806b0
at /rustc/060e47f74a91b28c3db28d80a6a9d6841ca51026/library/std/src/sys/unix/thread.rs:108:17
47: 0x7f729b43778d - <unknown>
48: 0x7f729b4b88e4 - clone
49: 0x0 - <unknown>
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 1.65.0-nightly (060e47f74 2022-08-23) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z unpretty=hir
query stack during panic:
end of query stack
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0425`.