https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91478
--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> --- Previously, we had in pr41893-1.o.debug.temp.o: w gnu_lto_v1 w gnu_lto_v1 w gnu_lto_v1 w gnu_lto_v1 0000000000000000 W pr41893_1.c.ebbf0839 Now we have: w w w 0000000000000000 W pr41893_1.c.ebbf0839 The gnu_lto_v1 symbol was resolved by libgcc.a hack.