ICE in handle_inline_attribute_on_fndecl, at rust/ba... | Rust-GCC/gccrs

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auto-reduced (treereduce-rust):

//@compile-flags: -frust-incomplete-and-experimental-compiler-do-not-use
#[inline = ""]
fn main() {}

original:

#[inline = ""] //~ ERROR unexpected token: `!`
fn main() {}

Version information:

765121736dfe3f5b319bbe9837880deda326394e

Command:
/home/matthias/vcs/github/gccrs/gccrs-build/gcc/crab1 -frust-incomplete-and-experimental-compiler-do-not-use

Program output

crab1: internal compiler error: in handle_inline_attribute_on_fndecl, at rust/backend/rust-compile-base.cc:369
0x89bb51 Rust::Compile::HIRCompileBase::handle_inline_attribute_on_fndecl(tree_node*, Rust::AST::Attribute const&)
	../../gcc/rust/backend/rust-compile-base.cc:369
0x10a0e8b Rust::Compile::HIRCompileBase::setup_fndecl(tree_node*, bool, bool, Rust::HIR::Visibility&, Rust::HIR::FunctionQualifiers const&, std::vector<Rust::AST::Attribute, std::allocator<Rust::AST::Attribute> > const&)
	../../gcc/rust/backend/rust-compile-base.cc:101
0x10a16fd 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*)
	../../gcc/rust/backend/rust-compile-base.cc:695
0x1068b2d Rust::Compile::CompileItem::visit(Rust::HIR::Function&)
	../../gcc/rust/backend/rust-compile-item.cc:256
0xcf15f4 Rust::Compile::CompileItem::compile(Rust::HIR::Item*, Rust::Compile::Context*, Rust::TyTy::BaseType*, unsigned int)
	../../gcc/rust/backend/rust-compile-item.h:37
0xcf15f4 Rust::Compile::CompileCrate::go()
	../../gcc/rust/backend/rust-compile.cc:48
0xcf16db Rust::Compile::CompileCrate::Compile(Rust::HIR::Crate&, Rust::Compile::Context*)
	../../gcc/rust/backend/rust-compile.cc:41
0xce90eb Rust::Session::compile_crate(char const*)
	../../gcc/rust/rust-session-manager.cc:733
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.

Start by compiling the reduced Rust snippet in the issue with -frust-incomplete-and-experimental-compiler-do-not-use and reproduce the ICE. Then inspect handle_inline_attribute_on_fndecl in rust/backend/rust-compile-base.cc around line 369, using the provided backtrace to follow setup_fndecl. Done means the input no longer triggers an internal compiler error and produces the expected diagnostic.

Written by the indexing model from the issue text.

ICE in handle_inline_attribute_on_fndecl, at rust/backend/rust-compile-base.cc:369 inline attr w param

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