Union pattern matching causes ICE

https://godbolt.org/z/3bxKGWver

Code

union MyUnion {
    f1: u32,
}

fn f(u: MyUnion) -> i32 {
    unsafe {
        match u {
            MyUnion { f1: 10 } => { 0 }
            _ => { 1 }
        }
    }
}

pub fn main() {}

Meta

• What version of Rust GCC were you using, git sha if possible.

Error output

Expect to compile successfully but got ICE:

crab1: internal compiler error: in visit, at rust/backend/rust-compile-pattern.cc:563
0x278bc0c internal_error(char const*, ...)
	???:0
0xadc501 fancy_abort(char const*, int, char const*)
	???:0
0xe86535 Rust::Compile::CompilePatternBindings::visit(Rust::HIR::StructPattern&)
	???:0
0xe94c02 Rust::Compile::CompileExpr::visit(Rust::HIR::MatchExpr&)
	???:0
0xe8f5a4 Rust::Compile::CompileExpr::Compile(Rust::HIR::Expr*, Rust::Compile::Context*)
	???:0
0xe9e156 Rust::Compile::CompileBlock::visit(Rust::HIR::BlockExpr&)
	???:0
0xe9e3fd Rust::Compile::CompileBlock::compile(Rust::HIR::BlockExpr*, Rust::Compile::Context*, Bvariable*)
	???:0
0xe9144f Rust::Compile::CompileExpr::visit(Rust::HIR::BlockExpr&)
	???:0
0xe8f5a4 Rust::Compile::CompileExpr::Compile(Rust::HIR::Expr*, Rust::Compile::Context*)
	???:0
0xeb3694 Rust::Compile::HIRCompileBase::compile_function_body(tree_node*, Rust::HIR::BlockExpr&, Rust::TyTy::BaseType*)
	???:0
0xeb6269 Rust::Compile::HIRCompileBase::compile_function(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Rust::HIR::SelfParam&, std::vector<Rust::HIR::FunctionParam, std::allocator<Rust::HIR::FunctionParam> >&, Rust::HIR::FunctionQualifiers const&, Rust::HIR::Visibility&, std::vector<Rust::AST::Attribute, std::allocator<Rust::AST::Attribute> >&, unsigned int, Rust::HIR::BlockExpr*, Rust::Resolver::CanonicalPath const&, Rust::TyTy::FnType*)
	???:0
0xe8c328 Rust::Compile::CompileItem::visit(Rust::HIR::Function&)
	???:0
0xc374f9 Rust::Compile::CompileCrate::go()
	???:0
0xc37578 Rust::Compile::CompileCrate::Compile(Rust::HIR::Crate&, Rust::Compile::Context*)
	???:0
0xc31914 Rust::Session::compile_crate(char const*)
	???:0
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.
Compiler returned: 1
...

crab1: internal compiler error: in visit, at rust/backend/rust-compile-pattern.cc:563
0x278bc0c internal_error(char const*, ...)
  ???:0
0xadc501 fancy_abort(char const*, int, char const*)
  ???:0
0xe86535 Rust::Compile::CompilePatternBindings::visit(Rust::HIR::StructPattern&)
  ???:0
0xe94c02 Rust::Compile::CompileExpr::visit(Rust::HIR::MatchExpr&)
  ???:0
0xe8f5a4 Rust::Compile::CompileExpr::Compile(Rust::HIR::Expr*, Rust::Compile::Context*)
  ???:0
0xe9e156 Rust::Compile::CompileBlock::visit(Rust::HIR::BlockExpr&)
  ???:0
0xe9e3fd Rust::Compile::CompileBlock::compile(Rust::HIR::BlockExpr*, Rust::Compile::Context*, Bvariable*)
  ???:0
0xe9144f Rust::Compile::CompileExpr::visit(Rust::HIR::BlockExpr&)
  ???:0
0xe8f5a4 Rust::Compile::CompileExpr::Compile(Rust::HIR::Expr*, Rust::Compile::Context*)
  ???:0
0xeb3694 Rust::Compile::HIRCompileBase::compile_function_body(tree_node*, Rust::HIR::BlockExpr&, Rust::TyTy::BaseType*)
  ???:0
0xeb6269 Rust::Compile::HIRCompileBase::compile_function(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Rust::HIR::SelfParam&, std::vector<Rust::HIR::FunctionParam, std::allocator<Rust::HIR::FunctionParam> >&, Rust::HIR::FunctionQualifiers const&, Rust::HIR::Visibility&, std::vector<Rust::AST::Attribute, std::allocator<Rust::AST::Attribute> >&, unsigned int, Rust::HIR::BlockExpr*, Rust::Resolver::CanonicalPath const&, Rust::TyTy::FnType*)
  ???:0
0xe8c328 Rust::Compile::CompileItem::visit(Rust::HIR::Function&)
  ???:0
0xc374f9 Rust::Compile::CompileCrate::go()
  ???:0
0xc37578 Rust::Compile::CompileCrate::Compile(Rust::HIR::Crate&, Rust::Compile::Context*)
  ???:0
0xc31914 Rust::Session::compile_crate(char const*)
  ???:0
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.
Compiler returned: 1