https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99915
--- Comment #1 from Alexander Lelyakin <alexander.lelyakin at googlemail dot
com> ---
Another sequence, same length:
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header filesystem
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header coroutine
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cerrno
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cstdlib
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header csetjmp
/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 memory_resource
/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 memory
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header ios
/usr/local/bin/g++ -std=c++20 -fmodules-ts -x c++-system-header cstdbool
/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/istream:38:1,
included from /usr/local/include/c++/11.0.1/sstream:38,
from /usr/local/include/c++/11.0.1/regex:46:
/usr/local/include/c++/11.0.1/ios: note: unable to represent further imported
source locations
/usr/local/include/c++/11.0.1/regex: internal compiler error: in
write_location, at cp/module.cc:15607
0x6df3ed module_state::write_location(bytes_out&, unsigned int)
../../gcc/gcc/cp/module.cc:15607
0xa68c23 trees_out::core_vals(tree_node*)
../../gcc/gcc/cp/module.cc:5904
0xa6c094 trees_out::tree_node_vals(tree_node*)
../../gcc/gcc/cp/module.cc:7054
0xa6c094 trees_out::tree_value(tree_node*)
../../gcc/gcc/cp/module.cc:8890
0xa68124 trees_out::tree_node(tree_node*)
../../gcc/gcc/cp/module.cc:9088
0xa6c47a trees_out::write_var_def(tree_node*)
../../gcc/gcc/cp/module.cc:11475
0xa6d715 module_state::write_cluster(elf_out*, depset**, unsigned int,
depset::hash&, unsigned int*, unsigned int*)
../../gcc/gcc/cp/module.cc:14662
0xa6f09e module_state::write(elf_out*, cpp_reader*)
../../gcc/gcc/cp/module.cc:17734
0xa6fe08 finish_module_processing(cpp_reader*)
../../gcc/gcc/cp/module.cc:19857
0xa02fab c_parse_final_cleanups()
../../gcc/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.
----
g++ (GCC) 11.0.1 20210409 (experimental)
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