ICE `ìn compile_function_body, at rust/backend/rust-compile-base.cc:638`
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@philberty is already working on this.
Since Jul 31, 2025.
bug
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Description
Code
#![crate_type = "lib"]
pub enum E {
A,
}
pub fn exhaustive_match(e: E) -> u8 {
match e {
E::u8 => 0,
}
}
Meta
- What version of Rust GCC were you using, git sha if possible.
5dc8c4d20d62462ebce137c6e5146235ab9e9e2e
<output>
Backtrace
crab1: internal compiler error: in compile_function_body, at rust/backend/rust-compile-base.cc:638
0x2fecaf8 internal_error(char const*, ...)
../../gcc/diagnostic-global-context.cc:517
0xc0e04d fancy_abort(char const*, int, char const*)
../../gcc/diagnostic.cc:1803
0x90ff09 Rust::Compile::HIRCompileBase::compile_function_body(tree_node*, Rust::HIR::BlockExpr&, Rust::TyTy::BaseType*)
../../gcc/rust/backend/rust-compile-base.cc:638
0x118d980 Rust::Compile::HIRCompileBase::compile_function(bool, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, tl::optional<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 long, Rust::HIR::BlockExpr*, Rust::Resolver::CanonicalPath const&, Rust::TyTy::FnType*)
../../gcc/rust/backend/rust-compile-base.cc:791
0x1158051 Rust::Compile::CompileItem::visit(Rust::HIR::Function&)
../../gcc/rust/backend/rust-compile-item.cc:220
0xdbeeeb Rust::Compile::CompileItem::compile(Rust::HIR::Item*, Rust::Compile::Context*, Rust::TyTy::BaseType*, unsigned long)
../../gcc/rust/backend/rust-compile-item.h:37
0xdbeeeb Rust::Compile::CompileCrate::go()
../../gcc/rust/backend/rust-compile.cc:48
0xdbeeeb Rust::Compile::CompileCrate::Compile(Rust::HIR::Crate&, Rust::Compile::Context*)
../../gcc/rust/backend/rust-compile.cc:41
0xdb9970 Rust::Session::compile_crate(char const*)
../../gcc/rust/rust-session-manager.cc:732
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See <https://gcc.gnu.org/bugs/> for instructions.
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