https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99051
Bug ID: 99051
Summary: [modules] ICE/SIGSEGV in get_location_from_adhoc_loc
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: boris at kolpackov dot net
Target Milestone: ---
cat <<EOF >hello.hxx
#pragma once
#if 1
import <string_view>;
#else
#include <string_view>
#endif
void say_hello (const std::string_view& name);
EOF
g++ -std=c++2a -fmodules-ts -fmodule-header -x c++-header
/path/to/include/c++/11.0.0/string_view
g++ -std=c++2a -fmodules-ts -fmodule-header -x c++-header hello.hxx
hello.hxx: internal compiler error: Segmentation fault
0x1809473 crash_signal
../../gcc/gcc/toplev.c:327
0x2c2808b get_location_from_adhoc_loc(line_maps const*, unsigned int)
../../gcc/libcpp/line-map.c:257
0xc634c8 module_state::write_location(bytes_out&, unsigned int)
../../gcc/gcc/cp/module.cc:15600
0xc65c6f module_state::write_define(bytes_out&, cpp_macro const*, bool)
../../gcc/gcc/cp/module.cc:16368
0xc66f09 module_state::write_macros(elf_out*, cpp_reader*, unsigned int*)
../../gcc/gcc/cp/module.cc:16870
0xc69d65 module_state::write(elf_out*, cpp_reader*)
../../gcc/gcc/cp/module.cc:17747
0xc6ffe9 finish_module_processing(cpp_reader*)
../../gcc/gcc/cp/module.cc:19778
0xb8e905 c_parse_final_cleanups()
../../gcc/gcc/cp/decl2.c:5178
0xf10f4c c_common_parse_file()
../../gcc/gcc/c-family/c-opts.c:1240
