https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65337
--- Comment #18 from Steven Noonan <steven at uplinklabs dot net> --- I'm still seeing an Ada-related failure when using --with-build-config=bootstrap-lto on the current gcc-7-branch (r253607). /build/gcc-multilib/src/gcc/gcc/ada/g-dyntab.adb: In function ‘prep__symbol_table__free’: /build/gcc-multilib/src/gcc/gcc/ada/g-dyntab.adb:140:9: internal compiler error: in gen_typedef_die, at dwarf2out.c:24370 end Free; ^ 0x8b8067 gen_typedef_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24370 0x8b9f6d gen_decl_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25390 0x8b85ad gen_type_die_with_usage /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24547 0x8b8d24 gen_type_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24758 0x8b9fec gen_decl_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25410 0x8b9146 process_scope_var /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24903 0x8b91a4 decls_for_scope /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:24928 0x8b3c5c gen_subprogram_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:22465 0x8b9e9a gen_decl_die /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25364 0x8bacd2 dwarf2out_decl /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25873 0x8bad31 dwarf2out_function_decl /build/gcc-multilib/src/gcc/gcc/dwarf2out.c:25888 0x939924 rest_of_handle_final /build/gcc-multilib/src/gcc/gcc/final.c:4520 0x939a92 execute /build/gcc-multilib/src/gcc/gcc/final.c:4562 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report.