https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83121
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Created attachment 42693 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42693&action=edit reduced testcase trippels@gcc67 ~ % g++ -g -flto -r -nostdlib -O2 test_environment.ii node_buffer.ii node_buffer.ii:98:10: warning: type ‘struct AsyncHooks’ violates the C++ One Definition Rule [-Wodr] struct AsyncHooks { ^ test_environment.ii:117:10: note: a different type is defined in another translation unit struct AsyncHooks { ^ node_buffer.ii:99:39: note: the first difference of corresponding definitions is field ‘providers_’ int providers_[B::PROVIDERS_LENGTH]; ^ test_environment.ii:118:67: note: a field of same name but different type is defined in another translation unit v8::Eternal<v8::String> providers_[AsyncWrap::PROVIDERS_LENGTH]; ^ lto1: internal compiler error: in linemap_ordinary_map_lookup, at libcpp/line-map.c:995 0x139f7a4 linemap_ordinary_map_lookup ../../gcc/libcpp/line-map.c:995 0x139f7a4 linemap_lookup(line_maps*, unsigned int) ../../gcc/libcpp/line-map.c:948 0x13a068b linemap_macro_loc_to_def_point ../../gcc/libcpp/line-map.c:1453 0x13a068b linemap_resolve_location(line_maps*, unsigned int, location_resolution_kind, line_map_ordinary const**) ../../gcc/libcpp/line-map.c:1585 0x136bb45 diagnostic_report_current_module(diagnostic_context*, unsigned int) ../../gcc/gcc/diagnostic.c:581 0xb0a6b1 diagnostic_report_current_function(diagnostic_context*, diagnostic_info*) ../../gcc/gcc/tree-diagnostic.c:39 0xb0a6f0 default_tree_diagnostic_starter ../../gcc/gcc/tree-diagnostic.c:48 0x136a48a diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) ../../gcc/gcc/diagnostic.c:985 0x136a84e diagnostic_impl ../../gcc/gcc/diagnostic.c:1108 0x136aa98 inform(unsigned int, char const*, ...) ../../gcc/gcc/diagnostic.c:1160 0x895b21 odr_types_equivalent_p ../../gcc/gcc/ipa-devirt.c:1569 0x89664e add_type_duplicate ../../gcc/gcc/ipa-devirt.c:1848 0x89664e get_odr_type(tree_node*, bool) ../../gcc/gcc/ipa-devirt.c:2028 0x89b9e4 odr_subtypes_equivalent_p ../../gcc/gcc/ipa-devirt.c:689 0x895740 odr_types_equivalent_p ../../gcc/gcc/ipa-devirt.c:1556 0x89664e add_type_duplicate ../../gcc/gcc/ipa-devirt.c:1848 0x89664e get_odr_type(tree_node*, bool) ../../gcc/gcc/ipa-devirt.c:2028 0x89bbd9 register_odr_type(tree_node*) ../../gcc/gcc/ipa-devirt.c:2111 0x5efea7 lto_read_decls ../../gcc/gcc/lto/lto.c:1748 0x5f14d4 lto_file_finalize ../../gcc/gcc/lto/lto.c:2048 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. lto-wrapper: fatal error: g++ returned 1 exit status compilation terminated. /home/trippels/bin/ld: fatal error: lto-wrapper failed collect2: error: ld returned 1 exit status Also happens without -g -O2: ~ % g++ -flto -r -nostdlib test_environment.ii node_buffer.ii
