https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65306
--- Comment #5 from Maxim Kuvyrkov <mkuvyrkov at gcc dot gnu.org> --- No need to rebuild the whole GCC with -save-temps. Just go to directory where compilation of extenddftf2_s.o takes place and copy-paste the compilation command for that one file with addition of -save-temps. I'm not familiar with "Apple Inc version cctools-862, GNU assembler version 1.38", so it may be that assembler is broken or too old; you may have to build recent binutils for your GCC to use.
