https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99436
Bug ID: 99436
Summary: ICE in get_cxx_dialect_name, at cp/name-lookup.c:6955
when using modules on C++23
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: italolmm2018 at outlook dot com
Target Milestone: ---
ICE when trying to 'export module' under C++23/C++2B:
gcc version 11.0.1 20210306 (experimental), configured with: ../configure
--target=i686-elf --prefix=/home/italo/chos/toolchain/kernel/x86/out
--enable-languages=c,c++ --enable-lto --disable-multilib --without-headers
--disable-nls --disable-werror
Command line and output:
$ x86_64-elf-g++ -std=c++2b -fmodules-ts -c test.cxx
test.cxx:1:8: internal compiler error: in get_cxx_dialect_name, at
cp/name-lookup.c:6955
1 | export module test;
| ^~~~~~
0x67dca0 get_cxx_dialect_name(cxx_dialect)
../../gcc/cp/name-lookup.c:6955
0x680a49 get_cxx_dialect_name(cxx_dialect)
../../gcc/tree.h:3353
0x9e1056 module_state_config::get_dialect()
../../gcc/cp/module.cc:14443
0x9f7a74 module_state_config::module_state_config()
../../gcc/cp/module.cc:14416
0x9f7a74 module_state::write(elf_out*, cpp_reader*)
../../gcc/cp/module.cc:17663
0x9f8caf finish_module_processing(cpp_reader*)
../../gcc/cp/module.cc:19875
0x98cf4b c_parse_final_cleanups()
../../gcc/cp/decl2.c:5175
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
The contents of the test.cxx file are just 'export module test;', and it builds
normally when using -std=c++20.
