https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125753
Bug ID: 125753
Summary: [reflection] ICE with -g, when aliasing type from
splicer inside an expansion statement in a constructor
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mikotin98 at gmail dot com
Target Milestone: ---
Compiled with
-g -std=c++26 -freflection
Tested on 16.1 on Linux, Windows and godbolt: https://godbolt.org/z/fb7KzPGca
--------------------
#include <meta>
namespace A {
}
class C {
C();
};
C::C() {
constexpr auto ctx = std::meta::access_context::current();
constexpr static auto members =
std::define_static_array(std::meta::members_of(^^A, ctx));
template for (constexpr auto member : members) {
using member_type = typename[:member:];
}
}
--------------------
test.cpp: In constructor ‘C::C()’:
test.cpp:23:1: internal compiler error: in is_base_type, at dwarf2out.cc:13503
23 | }
| ^
0x24492bf internal_error(char const*, ...)
../../gcc-16.1.0/gcc/diagnostic-global-context.cc:787
0x845433 fancy_abort(char const*, int, char const*)
../../gcc-16.1.0/gcc/diagnostics/context.cc:1813
0x804461 is_base_type
../../gcc-16.1.0/gcc/dwarf2out.cc:13503
0x804461 is_base_type
../../gcc-16.1.0/gcc/dwarf2out.cc:13468
0x804461 modified_type_die
../../gcc-16.1.0/gcc/dwarf2out.cc:13919
0xca6948 add_type_attribute
../../gcc-16.1.0/gcc/dwarf2out.cc:22764
0xc9fa60 gen_typedef_die
../../gcc-16.1.0/gcc/dwarf2out.cc:26676
0xc9fa60 gen_typedef_die
../../gcc-16.1.0/gcc/dwarf2out.cc:26610
0xc9fa60 gen_decl_die
../../gcc-16.1.0/gcc/dwarf2out.cc:27653
0xcbd58f decls_for_scope
../../gcc-16.1.0/gcc/dwarf2out.cc:27189
0xcbd60a gen_block_die
../../gcc-16.1.0/gcc/dwarf2out.cc:27032
0xcbd60a decls_for_scope
../../gcc-16.1.0/gcc/dwarf2out.cc:27218
0xcbd60a gen_block_die
../../gcc-16.1.0/gcc/dwarf2out.cc:27032
0xcbd60a decls_for_scope
../../gcc-16.1.0/gcc/dwarf2out.cc:27218
0xcbd60a gen_block_die
../../gcc-16.1.0/gcc/dwarf2out.cc:27032
0xcbd60a decls_for_scope
../../gcc-16.1.0/gcc/dwarf2out.cc:27218
0xc9b857 gen_subprogram_die
../../gcc-16.1.0/gcc/dwarf2out.cc:24597
0xc9f2ed gen_decl_die
../../gcc-16.1.0/gcc/dwarf2out.cc:27627
0xca07d8 dwarf2out_decl
../../gcc-16.1.0/gcc/dwarf2out.cc:28227
0xca0ca3 dwarf2out_early_global_decl
../../gcc-16.1.0/gcc/dwarf2out.cc:27843
/opt/gcc-16.1/libexec/gcc/x86_64-pc-linux-gnu/16.1.0/cc1plus -quiet -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE test.cpp -quiet -dumpdir a- -dumpbase test.cpp
-dumpbase-ext .cpp -mtune=generic -march=x86-64 -g -std=c++26 -freflection -o
/tmp/ccB1rmZ0.s
