ICE - Segmentation fault after `unknown trait item`

[MahadMuhammad]

Segmentation fault after unknown trait item

• You can view the same on godbolt

---

I tried this code from E0324

#![allow(unused)]
fn main() {
struct Bar;

trait Foo {
    const N : u32;

    fn M();
}

impl Foo for Bar {
    fn N() {}
    // error: item `N` is an associated method, which doesn't match its
    //        trait `<Bar as Foo>`
}
}

Meta

• What version of Rust GCC were you using, git sha 1bc8f08.
• gccrs (Compiler-Explorer-Build-gcc-ccac7ed46c2e81434714d74a86d58d2e5e1df7c8-binutils-2.40) 13.0.1 20230417 (experimental)

---

Error output

• ICE - after method is not a member of trait

Backtrace

E0324.rs:12:5: error: method ‘N’ is not a member of trait ‘Foo’
 11 | impl Foo for Bar {
    |      ~~~
 12 |     fn N() {}
    |     ^~
crab1: internal compiler error: Segmentation fault
0x11e1ad3 crash_signal
  ../../gccrs/gcc/toplev.cc:314
0x7f9bb844251f ???
  ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0
0xc0a644 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::length() const
  /usr/include/c++/11/bits/basic_string.h:927
0xc0a644 std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
  /usr/include/c++/11/bits/basic_string.h:459
0xc0a644 Rust::Resolver::TraitItemReference::get_identifier[abi:cxx11]() const
  ../../gccrs/gcc/rust/typecheck/rust-hir-trait-reference.cc:45
0xc12bd8 Rust::Resolver::TypeCheckItem::validate_trait_impl_block(Rust::HIR::ImplBlock&, Rust::TyTy::BaseType*, std::vector<Rust::TyTy::SubstitutionParamMapping, std::allocator<Rust::TyTy::SubstitutionParamMapping> >&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:575
0xc13133 Rust::Resolver::TypeCheckItem::visit(Rust::HIR::ImplBlock&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:346
0xc0d500 Rust::Resolver::TypeCheckItem::Resolve(Rust::HIR::Item&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:49
0xc0d500 Rust::Resolver::TypeCheckItem::Resolve(Rust::HIR::Item&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:35
0xc2906f ???
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-stmt.h:36
0xc2914c Rust::Resolver::TypeCheckStmt::Resolve(Rust::HIR::Stmt*)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-stmt.cc:34
0xc21034 Rust::Resolver::TypeCheckExpr::visit(Rust::HIR::BlockExpr&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-expr.cc:539
0xc1fce3 Rust::Resolver::TypeCheckExpr::Resolve(Rust::HIR::Expr*)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-expr.cc:41
0xc1204d Rust::Resolver::TypeCheckItem::visit(Rust::HIR::Function&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:434
0xc0d500 Rust::Resolver::TypeCheckItem::Resolve(Rust::HIR::Item&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:49
0xc0d500 Rust::Resolver::TypeCheckItem::Resolve(Rust::HIR::Item&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check-item.cc:35
0xbd3b5b Rust::Resolver::TypeResolution::Resolve(Rust::HIR::Crate&)
  ../../gccrs/gcc/rust/typecheck/rust-hir-type-check.cc:37
0xa712bb Rust::Session::compile_crate(char const*)
  ../../gccrs/gcc/rust/rust-session-manager.cc:631
Please submit a full bug report, with preprocessed source (by using -freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

• After fixing this issue, we need to add E0324 error code in gccrs