Closed
Description
Code
#![feature(allocator_api)]
use std::alloc::{AllocError, Allocator, Layout, System};
use std::ptr::NonNull;
use std::boxed::Box;
struct Alloc;
unsafe impl Allocator for Alloc {
fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
System.allocate(layout)
}
unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout) {
System.deallocate(ptr, layout)
}
}
fn main() {
let alloc = Alloc;
let boxed = Box::new_in(10, alloc.by_ref());
}Meta
rustc --version --verbose:
rustc 1.59.0-nightly (475b00aa4 2021-12-24)
binary: rustc
commit-hash: 475b00aa4037461b506539a06d15ca6091b461a7
commit-date: 2021-12-24
host: x86_64-unknown-linux-gnu
release: 1.59.0-nightly
LLVM version: 13.0.0
Error output
thread 'rustc' panicked at 'assertion failed: i < this.fields.count()', /rustc/c09a9529c51cde41c1101e56049d418edb07bf71/compiler/rustc_middle/src/ty/layout.rs:2311:21
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
error: internal compiler error: unexpected panic
Backtrace
stack backtrace:
0: rust_begin_unwind
at /rustc/c09a9529c51cde41c1101e56049d418edb07bf71/library/std/src/panicking.rs:498:5
1: core::panicking::panic_fmt
at /rustc/c09a9529c51cde41c1101e56049d418edb07bf71/library/core/src/panicking.rs:107:14
2: core::panicking::panic
at /rustc/c09a9529c51cde41c1101e56049d418edb07bf71/library/core/src/panicking.rs:48:5
3: <&rustc_middle::ty::TyS as rustc_target::abi::TyAbiInterface<_>>::ty_and_layout_field::field_ty_or_layout::<rustc_codegen_llvm::context::CodegenCx>
4: <rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS> as rustc_codegen_llvm::type_of::LayoutLlvmExt>::scalar_pair_element_llvm_type
5: <rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS> as rustc_codegen_llvm::type_of::LayoutLlvmExt>::scalar_pair_element_llvm_type
6: <rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS> as rustc_codegen_llvm::type_of::LayoutLlvmExt>::llvm_type
7: <rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS> as rustc_codegen_llvm::type_of::LayoutLlvmExt>::llvm_type
8: <rustc_target::abi::call::FnAbi<&rustc_middle::ty::TyS> as rustc_codegen_llvm::abi::FnAbiLlvmExt>::llvm_type
9: <rustc_codegen_llvm::context::CodegenCx as rustc_codegen_ssa::traits::declare::PreDefineMethods>::predefine_fn
10: rustc_codegen_llvm::base::compile_codegen_unit::module_codegen
11: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_span::symbol::Symbol, rustc_codegen_ssa::ModuleCodegen<rustc_codegen_llvm::ModuleLlvm>>
12: rustc_codegen_llvm::base::compile_codegen_unit
13: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
14: <rustc_session::session::Session>::time::<alloc::boxed::Box<dyn core::any::Any>, rustc_interface::passes::start_codegen::{closure#0}>
15: <rustc_interface::queries::Queries>::ongoing_codegen
16: <rustc_interface::interface::Compiler>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_errors::ErrorReported>>
17: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorReported>, rustc_interface::interface::create_compiler_and_run<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>::{closure#1}>
18: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>
19: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorReported>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorReported>>