https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
--- Comment #270 from Larkin Nickle <me at larbob dot org> --- Reading symbols from /home/larbob/Projects/build-gcc/builds/gcc-11.1.0/.o/./prev-gcc/cc1...BFD: /home/larbob/Projects/build-gcc/builds/gcc-11.1.0/.o/prev-gcc/cc1 symbol number 7215 references nonexistent SHT_SYMTAB_SHNDX section Can't read symbols from /home/larbob/Projects/build-gcc/builds/gcc-11.1.0/.o/prev-gcc/cc1: File in wrong format No dice with 7.9.1 either. I've now tried both dwarf2 and dwarf4 to no avail, and have verified that gdb is able to read, for example, dwarf4 symbols from a previous gcc 4.9.2 build that I did.