https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99879
--- Comment #1 from Alexander Lelyakin <alexander.lelyakin at googlemail dot
com> ---
There is a shorter sequence:
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header memory
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cstdio
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header span
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header shared_mutex
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cstdint
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header clocale
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header bitset
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header semaphore
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header exception
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header numbers
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header charconv
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header locale
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header string
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header ranges
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cstring
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header regex
----
In module imported at /usr/local/include/c++/11.0.1/regex:53:
/usr/local/include/c++/11.0.1/cstring: note: unable to represent further
imported source locations
/usr/local/include/c++/11.0.1/regex:53: internal compiler error: in open, at
cp/module.cc:13628
53 | #include <cstring>
|
0x6df11d loc_spans::open(unsigned int)
../../gcc/gcc/cp/module.cc:13628
0xa62db5 preprocess_module(module_state*, unsigned int, bool, bool, bool,
cpp_reader*)
../../gcc/gcc/cp/module.cc:19432
0xa2ccef module_token_filter::resume(int, int, tree_node*, unsigned int)
../../gcc/gcc/cp/lex.c:520
0xa2ccef module_token_lang(int, int, tree_node*, unsigned int, unsigned long)
../../gcc/gcc/cp/lex.c:557
0xae0d53 cp_lexer_new_main
../../gcc/gcc/cp/parser.c:660
0xae0d53 c_parse_file()
../../gcc/gcc/cp/parser.c:45264
0xc05d0d c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1218
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.
----
g++ (GCC) 11.0.1 20210408 (experimental)
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