https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97798
--- Comment #16 from jozefl at gcc dot gnu.org --- (In reply to Jonathan Wakely from comment #15) > Hmm, I get the same error for a out-of-tree binutils built from today's git > sources: > > GNU assembler (GNU Binutils) 2.35.50.20201112 > Copyright (C) 2020 Free Software Foundation, Inc. > This program is free software; you may redistribute it under the terms of > the GNU General Public License version 3 or later. > This program has absolutely no warranty. > This assembler was configured for a target of `msp430-elf'. Sigh, that's a different bug. I removed a GAS option that doesn't do anything, but is automatically passed by MSP430 GCC 10 ASM_SPEC when certain other options aren't present. And my GCC 10 tester explicitly uses Binutils 2.34 rather than master, so it went undetected. Pushed a Binutils fix. gcc-10 branch now builds with latest Binutils. Thanks for reporting this.